# Learn how to use CalculateIsolines
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In this section you learn how to use `CalculateIsolines` with ranges of time or distance, as well as to set areas to avoid.

**Topics**
+ [How to calculate a service area based on ranges of time](calculate-service-area-based-on-time.md)
+ [How to calculate a service area based on ranges of distance](calculate-service-area-based-on-distance.md)
+ [How to calculate a service area based on avoidance](calculate-service-area-based-on-avoidance.md)