Race Data
Read a race's course line and elevation profile
The official course as GeoJSON, the GPX file it is drawn from, measured distance and climb, and the elevation profile. No key. Published races only; 403 open_data_off when the organizer has turned open data off.
Method
GET
Path
/api/public/v1/events/{idOrSlug}/course
Authentication
None. Served from https://www.endurancehq.app with open CORS.
Caching
CDN 5 minutes, purged when the organizer edits the course; 30 seconds while building.
Request
curl "https://www.endurancehq.app/api/public/v1/events/{idOrSlug}/course"Path parameters
idOrSlugstring, requiredQuery schema
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"type": "object",
"properties": {
"raceOptionId": {
"description": "The distance. Without it, the event's only distance, else the event level.",
"type": "string"
}
},
"additionalProperties": false
}Response
Success status: 200
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"type": "object",
"properties": {
"event": {
"type": "object",
"properties": {
"id": {
"type": "string"
},
"slug": {
"type": "string"
},
"name": {
"type": "string"
},
"timezone": {
"description": "IANA zone the race's wall-clock times are stated in.",
"type": [
"string",
"null"
]
}
},
"required": [
"id",
"slug",
"name",
"timezone"
],
"additionalProperties": false
},
"raceOption": {
"anyOf": [
{
"type": "object",
"properties": {
"id": {
"type": "string"
},
"name": {
"type": "string"
}
},
"required": [
"id",
"name"
],
"additionalProperties": false
},
{
"type": "null"
}
],
"description": "The distance this answer is for; null for the event level."
},
"raceOptions": {
"type": "array",
"items": {
"type": "object",
"properties": {
"id": {
"type": "string"
},
"name": {
"type": "string"
},
"distance": {
"type": [
"number",
"null"
]
},
"distanceUnit": {
"type": [
"string",
"null"
]
}
},
"required": [
"id",
"name",
"distance",
"distanceUnit"
],
"additionalProperties": false
},
"description": "Every distance of the event, to ask per distance with raceOptionId."
},
"status": {
"type": "string",
"enum": [
"ready",
"building"
],
"description": "building: the file's stats are being computed; line and profile are null, ask again in a minute."
},
"course": {
"anyOf": [
{
"type": "object",
"properties": {
"gpxUrl": {
"description": "The GPX file the course is drawn from.",
"type": [
"string",
"null"
]
},
"courseMapUrl": {
"type": [
"string",
"null"
]
},
"distanceMiles": {
"description": "Measured along the track.",
"type": [
"number",
"null"
]
},
"elevationGainFt": {
"description": "Null when the file carries no usable elevation.",
"type": [
"number",
"null"
]
},
"elevationLossFt": {
"type": [
"number",
"null"
]
},
"statedDistance": {
"description": "As the organizer wrote it.",
"type": [
"string",
"null"
]
},
"statedElevationGain": {
"type": [
"string",
"null"
]
},
"statedElevationLoss": {
"type": [
"string",
"null"
]
},
"start": {
"anyOf": [
{
"type": "object",
"properties": {
"lat": {
"type": [
"number",
"null"
]
},
"lon": {
"type": [
"number",
"null"
]
},
"name": {
"type": [
"string",
"null"
]
}
},
"required": [
"lat",
"lon",
"name"
],
"additionalProperties": false,
"description": "A stated place: its name, and its pin when it has one."
},
{
"type": "null"
}
]
},
"finish": {
"anyOf": [
{
"type": "object",
"properties": {
"lat": {
"type": [
"number",
"null"
]
},
"lon": {
"type": [
"number",
"null"
]
},
"name": {
"type": [
"string",
"null"
]
}
},
"required": [
"lat",
"lon",
"name"
],
"additionalProperties": false,
"description": "A stated place: its name, and its pin when it has one."
},
{
"type": "null"
}
]
},
"computedAt": {
"type": [
"string",
"null"
]
}
},
"required": [
"gpxUrl",
"courseMapUrl",
"distanceMiles",
"elevationGainFt",
"elevationLossFt",
"statedDistance",
"statedElevationGain",
"statedElevationLoss",
"start",
"finish",
"computedAt"
],
"additionalProperties": false
},
{
"type": "null"
}
]
},
"components": {
"description": "A challenge bundle's distances; the first with a route is drawn.",
"type": "array",
"items": {
"type": "object",
"properties": {
"raceOptionId": {
"type": "string"
},
"name": {
"type": "string"
},
"gpxUrl": {
"type": [
"string",
"null"
]
}
},
"required": [
"raceOptionId",
"name",
"gpxUrl"
],
"additionalProperties": false
}
},
"line": {
"anyOf": [
{
"type": "object",
"properties": {
"type": {
"type": "string",
"const": "FeatureCollection"
},
"features": {
"type": "array",
"items": {
"type": "object",
"properties": {
"type": {
"type": "string",
"const": "Feature"
},
"properties": {
"type": "object",
"properties": {
"trackIndex": {
"type": "number"
},
"name": {
"type": [
"string",
"null"
]
},
"primary": {
"type": "boolean"
},
"distanceMiles": {
"type": "number"
}
},
"required": [
"trackIndex",
"name",
"primary",
"distanceMiles"
],
"additionalProperties": false
},
"geometry": {
"type": "object",
"properties": {
"type": {
"type": "string",
"const": "LineString"
},
"coordinates": {
"type": "array",
"items": {
"type": "array",
"items": {
"type": "number"
}
},
"description": "[longitude, latitude, elevation in metres]; elevation only when known."
}
},
"required": [
"type",
"coordinates"
],
"additionalProperties": false
}
},
"required": [
"type",
"properties",
"geometry"
],
"additionalProperties": false
}
}
},
"required": [
"type",
"features"
],
"additionalProperties": false
},
{
"type": "null"
}
],
"description": "GeoJSON (RFC 7946), simplified to a 2 m tolerance."
},
"elevationProfile": {
"anyOf": [
{
"type": "object",
"properties": {
"elevationKnown": {
"type": "boolean"
},
"elevationSource": {
"type": "string",
"enum": [
"gpx",
"terrain"
]
},
"minFt": {
"type": "number"
},
"maxFt": {
"type": "number"
},
"totalMiles": {
"type": "number"
},
"points": {
"type": "array",
"items": {
"type": "object",
"properties": {
"mile": {
"type": "number"
},
"elevationFt": {
"type": "number"
},
"gradePercent": {
"type": "number"
},
"gainFt": {
"type": "number"
},
"lossFt": {
"type": "number"
},
"lat": {
"type": "number"
},
"lon": {
"type": "number"
}
},
"required": [
"mile",
"elevationFt",
"gradePercent",
"gainFt",
"lossFt",
"lat",
"lon"
],
"additionalProperties": false
}
}
},
"required": [
"elevationKnown",
"elevationSource",
"minFt",
"maxFt",
"totalMiles",
"points"
],
"additionalProperties": false
},
{
"type": "null"
}
],
"description": "At most 1,200 points, keeping summits and valley floors."
},
"attribution": {
"type": "object",
"properties": {
"provider": {
"type": "string",
"const": "Endurance HQ"
},
"eventUrl": {
"type": "string",
"description": "The race's official site; link it wherever the data is shown."
},
"contributors": {
"type": "array",
"items": {
"type": "object",
"properties": {
"name": {
"type": "string"
},
"standing": {
"description": "What they are to the race, such as \"2025 finisher, Sunlight aid station volunteer\".",
"type": [
"string",
"null"
]
},
"credit": {
"type": "string",
"description": "The credit line to show: \"Course notes by Jackson Strand, 2025 finisher, Sunlight aid station volunteer\"."
},
"fields": {
"type": "array",
"items": {
"type": "string"
},
"description": "Fields their published corrections changed, such as crewNotes or durationMinutes."
}
},
"required": [
"name",
"standing",
"credit",
"fields"
],
"additionalProperties": false,
"description": "Someone whose correction the race organizer reviewed and published."
},
"description": "Everyone whose course corrections the organizer published for this race."
}
},
"required": [
"provider",
"eventUrl",
"contributors"
],
"additionalProperties": false,
"description": "Who to credit wherever this data is shown."
}
},
"required": [
"event",
"raceOption",
"raceOptions",
"status",
"course",
"line",
"elevationProfile",
"attribution"
],
"additionalProperties": false
}