Below are some screenshots of isochrones (also called drivetime polygons or driveranges) created with the Xtreme Route library.
A 3 hour interpolated isochrone over south Sweden and Denmark.
A 3 hour isochrone on south Sweden and Denmark.
Two one hour interpolated isochrones over Napoli area in Italy.
Two one hour isochrones over Napoli area in Italy.
Three 90 minute isochrones in England.
Three isodistances over england with 70 mile range and 10 mile intervals.
Three isodistances over england with 70 mile range and a high degree of smoothing.