When you are in a selected category or have performed a search, you can sort ads by "Walking distance", "Bike distance", "Driving distance", "Your country" and "Worldwide".
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Walking distance = 2km
Cycling distance = 10km
Driving distance = 25km
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If you want to search for something in specific areas, you can manually change the location in the app's settings and enter the street name, town or city as the location.