Me, my university and my work is like a triangle with 7 km between each of the three. (1 mile = 1,6 km.) So my commutes are either 14 km or 21 km roundtrip, but I usually bike around in the city ”after school” so every day is always over 20 km. Except for these cold days when I take the tube and am late to everything...

I bike the 7 km in 15 minutes. With public transportation it can sometimes take more than one hour (but usually about 45 minutes).