GraphHopper API
Overview
GraphHopper is a routing API that calculates optimized A-to-B directions with turn-by-turn instructions for driving, cycling, and walking. It supports multiple transport profiles and can handle route optimization for multiple waypoints. A free tier is available with a generous daily quota, making it great for learning and small projects.
Beginner Tip
Get a free API key at https://www.graphhopper.com/ and use the /route endpoint with point parameters in "lat,lon" format. The free tier allows 500 requests per day, which is plenty for experimentation.
Available Data
Example Response
{
"route": "Line 1",
"origin": "Station A",
"destination": "Station B",
"departure": "08:30",
"arrival": "09:15",
"status": "On Time",
"delays_min": 0
} Field Reference
paths[].distance Total route distance in meters. paths[].time Estimated travel time in milliseconds. paths[].points GeoJSON LineString or encoded polyline of the full route geometry. paths[].instructions Array of turn-by-turn instructions with text, distance, and sign values for navigation. paths[].legs Individual route segments when multiple waypoints are provided, each with their own distance and time. info.took Server-side processing time in milliseconds for performance monitoring. Implementation Example
const url = "https://docs.graphhopper.com/";
// Replace headers or query params with the values required by this API.
const response = await fetch(url, {
headers: {
"X-API-Key": "YOUR_API_KEY"
}
});
if (!response.ok) throw new Error(`Request failed: ${response.status}`);
const data = await response.json();
console.log(data); What Can You Build?
Note: These code examples are AI-generated and unverified. Always refer to the official API documentation for accurate usage.
Common Errors & Troubleshooting
Matrix Score Breakdown
Partially tested on Apr 5, 2026
Technical Specifications
Related Tags
Similar APIs
View All →AIS Hub
AIS Hub aggregates real-time Automatic Identification System data from a global network of shore-based receivers to track marine vessels.
AZ511
AZ511 is the official Arizona Department of Transportation traffic data API providing real-time road conditions, incidents, and camera information for Arizona highways.
Bay Area Rapid Transit
⭐ Beginner's PickThe BART API provides real-time train arrival predictions, station information, and service advisories for the Bay Area Rapid Transit system in the San Francisco Bay Area.
BlaBlaCar
⚠ UnavailableBlaBlaCar provides programmatic access to search car sharing trips via REST API.
Boston MBTA Transit
⭐ Beginner's PickThe Boston MBTA Transit API gives you real-time data for the Massachusetts Bay Transportation Authority, including train, bus, and ferry arrivals.