# Calculate distance-based isoline routing

A distance-based isoline, also called an Isodistance, can be requested using range[type]=distance and providing range[values] in meters.

mode can be either:

• short: In this mode the isoline calculation simulates route calculation from start to destination minimizing route distance, disregarding any speed information.
• fast: In this mode the isoline calculation simulates route calculation from start to destination minimizing travel time.

The request below calculates a 4 km isoline in the short mode. The response answers the question: what area can I reach by driving 4 km or less, while trying to take the shortest possible route?

curl -X GET \
'https://isoline.router.hereapi.com/v8/isolines?transportMode=car&origin=52.51578,13.37749&range[type]=distance&range[values]=4000&routingMode=short'


The request below calculates a 4 km isoline around the center of Berlin in the fast mode. The response answers the question: what area can I reach by driving 4 km or less, while trying to take the fastest possible route?

curl -X GET \
'https://isoline.router.hereapi.com/v8/isolines?transportMode=car&origin=52.51578,13.37749&range[type]=distance&range[values]=4000&routingMode=fast'