a shade over 11 miles (17.7028km, thank you google conversion) and usually takes me 55 mins. I recently built a 'winter' bike (old hybrid) and am surprised that I was immediately a bit slower. I didn't think going from 23 to 38 tires would make a difference but apparently it does. Add to that the cold and today it took me over an hour. Truth is, I'm not in any hurry to get to work so it's fine with me!