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OpenAPI Specification

openapi: 3.2.0
info:
  title: Entur Fare Zone API
  version: 2026.08.0
  contact:
    name: Team Avstand og Nettverk
  description: 'Operations tagged Fare Zone across 2 of this provider''s published API definitions: entur-prdudisapi-openapi.json, entur-prdudisapi-openapi.yml. Each path carries the servers of the definition it was published in.'
servers:
- url: https://api.entur.io/distance
security:
- enturOpen: []
tags:
- name: Fare Zone
paths:
  /fare-zones/distances/zones:
    parameters:
    - $ref: '#/components/parameters/ET-Client-Name'
    - $ref: '#/components/parameters/X-Correlation-Id'
    post:
      tags:
      - Fare Zone
      summary: Return distance between two fare zones
      description: Calculates the shortest-path distance between two fare zones, where 'distance' is the number of fare zone borders crossed. All shortest paths of equal length are returned. Nested zones are transparently mapped to their parent overlapping zone before the path is calculated.
      operationId: findFromToVia
      requestBody:
        description: Origin and destination fare zones, with optional via zones, preOwned zones, organisation filter, and path inclusion flag
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/FareZoneDistanceRequest'
        required: true
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/FareZoneDistanceResponse'
        '400':
          description: Validation Error
          content:
            application/problem+json:
              schema:
                type: object
                properties:
                  instance:
                    type: string
                    format: uri
                  title:
                    type: string
                  status:
                    type: integer
                    format: int32
                  detail:
                    type:
                    - string
                    - 'null'
                  errors:
                    type: array
                    items:
                      type: string
                examples:
                - instance: https://api.entur.io/distance/request/path
                  title: Reason for error
                  status: 400
                  errors:
                  - Detail on first error
                  - Detail on second error
                  detail: Human readable error
        '401':
          description: Not Authorized
          content:
            application/problem+json:
              schema:
                type: object
                properties:
                  instance:
                    type: string
                    format: uri
                  title:
                    type: string
                  status:
                    type: integer
                    format: int32
                  detail:
                    type:
                    - string
                    - 'null'
                examples:
                - instance: https://api.entur.io/distance/request/path
                  title: Reason for error
                  status: 400
                  detail: Human readable error
        '403':
          description: Forbidden
          content:
            application/problem+json:
              schema:
                type: object
                properties:
                  instance:
                    type: string
                    format: uri
                  title:
                    type: string
                  status:
                    type: integer
                    format: int32
                  detail:
                    type:
                    - string
                    - 'null'
                examples:
                - instance: https://api.entur.io/distance/request/path
                  title: Reason for error
                  status: 400
                  detail: Human readable error
        '404':
          description: Resource Not Found
          content:
            application/problem+json:
              schema:
                type: object
                properties:
                  instance:
                    type: string
                    format: uri
                  title:
                    type: string
                  status:
                    type: integer
                    format: int32
                  detail:
                    type:
                    - string
                    - 'null'
                examples:
                - instance: https://api.entur.io/distance/request/path
                  title: Reason for error
                  status: 400
                  detail: Human readable error
        '500':
          description: Internal Error
          content:
            application/problem+json:
              schema:
                type: object
                properties:
                  instance:
                    type: string
                    format: uri
                  title:
                    type: string
                  status:
                    type: integer
                    format: int32
                  detail:
                    type:
                    - string
                    - 'null'
                examples:
                - instance: https://api.entur.io/distance/request/path
                  title: Reason for error
                  status: 400
                  detail: Human readable error
      security:
      - enturOpen: []
    servers:
    - url: https://api.entur.io/distance
  /fare-zones/distances/stops:
    parameters:
    - $ref: '#/components/parameters/ET-Client-Name'
    - $ref: '#/components/parameters/X-Correlation-Id'
    post:
      tags:
      - Fare Zone
      summary: Return zone distance between two stop places
      description: Resolves stop places to coordinates, then determines which overlapping fare zones each stop belongs to. Because a stop place can belong to multiple overlapping fare zones, all zone combinations are evaluated and one result per combination is returned. The request does support mixing zones into the stop places. If only doing zones the recommended url is /fare-zones/distances/zones as it is faster
      operationId: findFromToWithStopPlaces
      requestBody:
        description: Ordered list of stop place IDs, with optional preOwned zones and organisation filter
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/ZonalStopPlaceDistanceRequest'
        required: true
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                type: array
                items:
                  $ref: '#/components/schemas/FareZoneDistanceResponse'
        '400':
          description: Validation Error
          content:
            application/problem+json:
              schema:
                type: object
                properties:
                  instance:
                    type: string
                    format: uri
                  title:
                    type: string
                  status:
                    type: integer
                    format: int32
                  detail:
                    type:
                    - string
                    - 'null'
                  errors:
                    type: array
                    items:
                      type: string
                examples:
                - instance: https://api.entur.io/distance/request/path
                  title: Reason for error
                  status: 400
                  errors:
                  - Detail on first error
                  - Detail on second error
                  detail: Human readable error
        '401':
          description: Not Authorized
          content:
            application/problem+json:
              schema:
                type: object
                properties:
                  instance:
                    type: string
                    format: uri
                  title:
                    type: string
                  status:
                    type: integer
                    format: int32
                  detail:
                    type:
                    - string
                    - 'null'
                examples:
                - instance: https://api.entur.io/distance/request/path
                  title: Reason for error
                  status: 400
                  detail: Human readable error
        '403':
          description: Forbidden
          content:
            application/problem+json:
              schema:
                type: object
                properties:
                  instance:
                    type: string
                    format: uri
                  title:
                    type: string
                  status:
                    type: integer
                    format: int32
                  detail:
                    type:
                    - string
                    - 'null'
                examples:
                - instance: https://api.entur.io/distance/request/path
                  title: Reason for error
                  status: 400
                  detail: Human readable error
        '404':
          description: Resource Not Found
          content:
            application/problem+json:
              schema:
                type: object
                properties:
                  instance:
                    type: string
                    format: uri
                  title:
                    type: string
                  status:
                    type: integer
                    format: int32
                  detail:
                    type:
                    - string
                    - 'null'
                examples:
                - instance: https://api.entur.io/distance/request/path
                  title: Reason for error
                  status: 400
                  detail: Human readable error
        '500':
          description: Internal Error
          content:
            application/problem+json:
              schema:
                type: object
                properties:
                  instance:
                    type: string
                    format: uri
                  title:
                    type: string
                  status:
                    type: integer
                    format: int32
                  detail:
                    type:
                    - string
                    - 'null'
                examples:
                - instance: https://api.entur.io/distance/request/path
                  title: Reason for error
                  status: 400
                  detail: Human readable error
      security:
      - enturOpen: []
    servers:
    - url: https://api.entur.io/distance
  /fare-zones/distances/polyline:
    parameters:
    - $ref: '#/components/parameters/ET-Client-Name'
    - $ref: '#/components/parameters/X-Correlation-Id'
    post:
      tags:
      - Fare Zone
      summary: Return distance from polyline
      description: Finds all zones that a polyline passes through
      operationId: polylineDistance
      parameters:
      - name: organisationId
        in: query
        description: List of organisations that one might request zones through
        required: true
        style: form
        explode: true
        schema:
          type: array
          items:
            type: integer
            format: int64
      - name: time
        in: query
        description: The time at which the distance is active. This defaults to now
        required: false
        style: form
        explode: true
        schema:
          type: string
          format: date-time
      - name: excludePolylineCoordinates
        in: query
        description: Removes the polyline coordinates from the response
        required: false
        style: form
        explode: true
        schema:
          type: boolean
      requestBody:
        description: A polyline string
        content:
          text/plain:
            schema:
              type: string
              examples:
              - cxk~Fhy~uO
          application/json:
            schema:
              type: string
              examples:
              - cxk~Fhy~uO
        required: true
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CoordinateDistanceResponse'
        '400':
          description: Validation Error
          content:
            application/problem+json:
              schema:
                type: object
                properties:
                  instance:
                    type: string
                    format: uri
                  title:
                    type: string
                  status:
                    type: integer
                    format: int32
                  detail:
                    type:
                    - string
                    - 'null'
                  errors:
                    type: array
                    items:
                      type: string
                examples:
                - instance: https://api.entur.io/distance/request/path
                  title: Reason for error
                  status: 400
                  errors:
                  - Detail on first error
                  - Detail on second error
                  detail: Human readable error
        '401':
          description: Not Authorized
          content:
            application/problem+json:
              schema:
                type: object
                properties:
                  instance:
                    type: string
                    format: uri
                  title:
                    type: string
                  status:
                    type: integer
                    format: int32
                  detail:
                    type:
                    - string
                    - 'null'
                examples:
                - instance: https://api.entur.io/distance/request/path
                  title: Reason for error
                  status: 400
                  detail: Human readable error
        '403':
          description: Forbidden
          content:
            application/problem+json:
              schema:
                type: object
                properties:
                  instance:
                    type: string
                    format: uri
                  title:
                    type: string
                  status:
                    type: integer
                    format: int32
                  detail:
                    type:
                    - string
                    - 'null'
                examples:
                - instance: https://api.entur.io/distance/request/path
                  title: Reason for error
                  status: 400
                  detail: Human readable error
        '404':
          description: Resource Not Found
          content:
            application/problem+json:
              schema:
                type: object
                properties:
                  instance:
                    type: string
                    format: uri
                  title:
                    type: string
                  status:
                    type: integer
                    format: int32
                  detail:
                    type:
                    - string
                    - 'null'
                examples:
                - instance: https://api.entur.io/distance/request/path
                  title: Reason for error
                  status: 400
                  detail: Human readable error
        '500':
          description: Internal Error
          content:
            application/problem+json:
              schema:
                type: object
                properties:
                  instance:
                    type: string
                    format: uri
                  title:
                    type: string
                  status:
                    type: integer
                    format: int32
                  detail:
                    type:
                    - string
                    - 'null'
                examples:
                - instance: https://api.entur.io/distance/request/path
                  title: Reason for error
                  status: 400
                  detail: Human readable error
      security:
      - enturOpen: []
    servers:
    - url: https://api.entur.io/distance
components:
  schemas:
    OrgBasedDistances:
      type: object
      properties:
        from:
          type: string
        to:
          type: string
        organisation:
          type: integer
          format: int64
        zonesCrossed:
          type: array
          items:
            type: string
        shortestDistance:
          type: integer
          format: int32
        shortestPath:
          type: array
          items:
            type: array
            items:
              type: string
      examples:
      - from: ENT:FareZone:337
        to: ENT:FareZone:337
        organisation: 1
        zonesCrossed:
        - ENT:FareZone:337
        shortestDistance: 1
        shortestPath: []
    ZonalStopPlaceDistanceRequest:
      required:
      - stopPlaces
      type: object
      properties:
        stopPlaces:
          minItems: 1
          type: array
          description: Ordered list of stop place IDs (first is origin, last is destination, any in between are via-points) the path must pass through. If needed the list can also contain Zones
          items:
            type: string
            description: Ordered list of stop place IDs (first is origin, last is destination, any in between are via-points) the path must pass through. If needed the list can also contain Zones
        organisationId:
          type:
          - integer
          - 'null'
          format: int64
        codespaces:
          maxLength: 3
          minLength: 3
          type:
          - string
          - 'null'
        time:
          type:
          - string
          - 'null'
          format: date-time
        preOwned:
          uniqueItems: true
          type:
          - array
          - 'null'
          items:
            type: string
      examples:
      - stopPlaces:
        - NSR:StopPlace:337
        - NSR:StopPlace:11
        organisationId: 1
        codespaces: ENT
        time: '2026-08-26T10:53:07.820698178Z'
        preOwned:
        - ENT:FareZone:1
    Zones:
      type: object
      properties:
        requiredZones:
          uniqueItems: true
          type: array
          items:
            type: string
        path:
          type:
          - array
          - 'null'
          items:
            type: string
      examples:
      - requiredZones:
        - ENT:FareZone:1
        - ENT:FareZone:2
        - ENT:FareZone:4
        path:
        - ENT:FareZone:1
        - ENT:FareZone:2
        - ENT:FareZone:4
    FareZoneDistanceResponse:
      type: object
      properties:
        fromZoneId:
          type: string
        toZoneId:
          type: string
        organisationId:
          type: integer
          format: int64
        distance:
          type: integer
          format: int32
        zones:
          type: array
          items:
            $ref: '#/components/schemas/Zones'
        directPath:
          type:
          - array
          - 'null'
          description: This field only gets populated if the direct path from-to is shorter than the via path
          items:
            $ref: '#/components/schemas/Zones'
      examples:
      - fromZoneId: ENT:FareZone:1
        toZoneId: ENT:FareZone:4
        organisationId: 1
        distance: 10
        zones:
        - requiredZones:
          - ENT:FareZone:1
          - ENT:FareZone:2
          - ENT:FareZone:4
          path:
          - ENT:FareZone:1
          - ENT:FareZone:2
          - ENT:FareZone:4
        directPath:
        - requiredZones:
          - ENT:FareZone:1
          - ENT:FareZone:4
          path:
          - ENT:FareZone:1
          - ENT:FareZone:4
    FareZoneDistanceRequest:
      type: object
      properties:
        from:
          type: string
          examples:
          - ENT:FareZone:1
        to:
          type: string
          examples:
          - ENT:FareZone:1
        organisationId:
          type:
          - integer
          - 'null'
          format: int64
        time:
          type:
          - string
          - 'null'
          format: date-time
        via:
          type:
          - array
          - 'null'
          description: Use 'via' to force the path through one or more intermediate zones.
          items:
            type: string
        preOwned:
          uniqueItems: true
          type:
          - array
          - 'null'
          description: Use 'preOwned' to exclude zones the traveller already owns — these zones are not counted toward the distance.
          items:
            type: string
      examples:
      - from: ENT:FareZone:1
        to: ENT:FareZone:2
        organisationId: 1
        time: '2026-08-26T10:53:07.737812629Z'
        via:
        - ENT:FareZone:1
        preOwned:
        - ENT:FareZone:2
    CoordinateDistanceResponse:
      type: object
      properties:
        from:
          type: array
          items:
            type: string
        to:
          type: array
          items:
            type: string
        polylineCoordinates:
          type:
          - array
          - 'null'
          items:
            $ref: '#/components/schemas/ZoneCoordinate'
        allZonesCrossed:
          type: array
          items:
            type: string
        orgBasedDistances:
          type: array
          items:
            $ref: '#/components/schemas/OrgBasedDistances'
      examples:
      - from:
        - ENT:FareZone:337
        to:
        - ENT:FareZone:94
        polylineCoordinates:
        - latitude: 1
          longitude: 1
        allZonesCrossed:
        - RUT:FareZone:1
        orgBasedDistances:
        - from: ENT:FareZone:337
          to: ENT:FareZone:337
          organisation: 1
          zonesCrossed:
          - ENT:FareZone:337
          shortestDistance: 1
          shortestPath: []
    ZoneCoordinate:
      type: object
      properties:
        latitude:
          type: number
        longitude:
          type: number
      examples:
      - latitude: 1
        longitude: 1
  parameters:
    X-Correlation-Id:
      name: X-Correlation-Id
      in: header
      description: Correlation id
      required: false
      style: simple
      explode: false
      schema:
        type: string
    ET-Client-Name:
      name: ET-Client-Name
      in: header
      description: 'Entur Client Header.

        It is required that all consumers identify themselves by using this header.

        Entur will deploy strict rate-limiting policies on API-consumers who do not identify with a header and reserves the right to block unidentified consumers.

        The structure of ET-Client-Name should be: `<company>-<application>`.'
      required: false
      style: simple
      explode: false
      schema:
        type: string
  securitySchemes:
    enturOpen:
      type: apiKey
      name: ET-Client-Name
      in: header
x-refined-from:
- entur-prdudisapi-openapi.json
- entur-prdudisapi-openapi.yml