What is Horizon Mapper?
Horizon Mapper is a free, professional-grade web application for generating and analyzing isochrones (travel time zones). Whether you're planning transportation networks, analyzing market accessibility, or evaluating location-based services, Horizon Mapper provides powerful tools to visualize and measure accessibility.
Key Features
Interactive Isochrone Generation
Create travel time zones for driving, biking, and walking with duration ranges from 5 to 60 minutes. Visualize accessibility from any location worldwide.
Custom Drawing Tools
Draw, edit, and manage custom polygon areas on the map. Perfect for defining service areas, exclusion zones, or areas of interest.
Geometry Operations
Perform advanced spatial operations including union, subtraction, and intersection of polygons to create complex analysis zones.
Real-time Analytics
Calculate area (km²) and perimeter (km) for individual zones or combined geometries with instant updates as you draw and edit.
Export Options
Export your maps as GeoJSON files (with zone metadata) or high-quality PNG images for use in presentations, reports, or GIS software.
Shareable URLs
All zones and geometries are encoded in the URL, making it easy to save your work or share maps with colleagues and stakeholders.
100% Free and Open Data
Horizon Mapper is built entirely on free and open-source technologies:
- OpenStreetMap - Global map data from the collaborative mapping community
- OpenRouteService - Travel time calculations powered by OpenStreetMap routing data
- MapLibre GL JS - Open-source map rendering engine
- Nominatim - Geocoding and location search
No hidden fees, no subscription required, no data limits. Use it for personal projects, professional work, or research - completely free.
Use Cases
- Urban Planning - Analyze public transportation coverage and walkability
- Real Estate - Evaluate property accessibility to amenities and services
- Retail - Determine store catchment areas and customer reach
- Logistics - Plan delivery zones and optimize distribution networks
- Healthcare - Assess hospital and clinic accessibility for patient populations
- Research - Study mobility patterns and accessibility inequalities
Technical Specifications
Travel Modes
- Driving (car) - Analyze vehicular accessibility
- Cycling - Evaluate bike infrastructure and reach
- Walking - Measure pedestrian accessibility
Supported Features
- Time ranges: 5 to 60 minutes in 5-minute intervals
- Multiple zones per map with individual visibility controls
- Custom zone naming and color assignment
- Undo/redo support for all drawing operations
- Keyboard shortcuts for efficient workflow
- Dark and light mode support
- Fully responsive design for desktop and mobile devices
Get Started
JavaScript Required: Horizon Mapper requires JavaScript to be enabled in your browser for the interactive mapping interface. Please enable JavaScript and reload this page to use the application.
Once loaded, simply search for any location, select your travel mode (drive/bike/walk), choose a time duration, and click the map to generate your first isochrone zone.
About the Developer
Horizon Mapper is developed by Florent Chif, a geospatial software engineer passionate about making powerful mapping tools accessible to everyone. Follow the development on X (Twitter) @FlorentChif.
Attribution & Licensing
This application uses open data and respects all licensing requirements:
- Map data: © OpenStreetMap contributors (ODbL license)
- Map tiles: © MapTiler © OpenStreetMap
- Routing: OpenRouteService (using OSM data)
- Geocoding: Nominatim (OSM geocoding service)