I generally ride twice per week during spring, summer and fall. Weekday post-work ride is usually anywhere from 10-25 miles, depending on what kind of shape I'm in and when the sun sets. This is usually a very hilly ride. Weekend ride is longer -- 30-70 miles. Most weekend rides are 40-50 miles.

I don't ride more because I try to get in cross-training, including weight training 2x per week.