I was thinking that I was doing way too much of a commute- 16 miles one way. I've done it a couple of times, I'm trying to work up to 3 times a week as my goal. Someone a week ago enlightened me to driving somewhere and riding 10 miles when I didn't feel like driving the whole way. A great idea but not much in between here and there (but cranberry bogs!)

As for mph- I'm slow. I'm a mtn biker. I ride basically a mtn bike with street tires...and I average about 10 to 12 mph. On a road bike I guess you could really crank it. It takes me about 1 hr 20 minutes to do the 16 miles. I don't sweat much so it's not too bad.