I'm training for an ultramarathon in the summer and I'm trying to get my weekly mileage totals up. However, there might be several times a week when I'll be mountain biking circa 80 km/50 miles in a day. My question is: if I was to try and convert these cycling miles into running miles, how many running miles would 50 cycling miles be worth? What would the conversion ratio be like? [more inside]
posted on Jan 3, 2007 - 20 answers