Amsterdam also has high average wind speed. Headwinds can slow you down just as much as hills, and crosswinds make it harder to control the bike. Most energy sp

Amsterdam also has high average wind speed. Headwinds can slow you down just as much as hills, and crosswinds make it harder to control the bike. Most energy spent while cycling goes to overcoming wind resistance, and it's easy to underestimate how important it is if you don't cycle regularly.