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Drawing an isochrone (travel-time area)

With Smappen, you can draw isochrones (travel-time areas) and isodistances for free, in just a few clicks. An isochrone shows everything you can reach from a starting point within a given time — by car, bike, on foot, by truck or by public transit. Unlike a simple radius circle, it reflects the real road network and transport options, which is why it’s widely used for market studies, site selection and delivery-area analysis.

How to draw an isochrone #

  1. Click “Create a new area.”
  2. Set your starting point: type an address, a city or GPS coordinates (latitude, longitude), or right-click on the map and choose “Starting address.”
  3. Select the area type “Time” and choose a travel mode: driving, cycling, walking, truck or public transit.
  4. Set the travel time with the purple slider, or type it in (up to 12 hours).
  5. Click “Calculate.” Your isochrone appears on the map.

Available travel modes #

  • Driving — smooth traffic conditions
  • Cycling — average speed 15 km/h
  • Walking — average speed 5 km/h
  • Public transit — based on real timetables of the networks covered; available in all countries (in France, all networks except TGV). See the list of supported transport networks.
  • Truck (3.5 t / width 2.2 m / height 4 m) — France only, smooth traffic conditions

How travel times are calculated #

The calculation takes into account:

  • Speed limits and road types (city streets, country roads, highways)
  • The travel mode you selected
  • Smooth traffic conditions, so results are consistent and repeatable at any time of day
  • For public transit, the timetables of the covered networks

Smappen relies on geographic information systems (GIS) and travel-time data to generate these areas, so you get a realistic picture of how far customers can actually reach you — rather than a simple circle drawn around a point.


To go further:

Updated on October 16, 2026