I bought a 2004 Klein Aura X from a friend this winter. Got it back from the bike shop over a week ago and finally got to put some time in today. I did a 9 mile ride Thursday with the bikeshop owner and a friend but had to wait for them after a few hills. Today I did the Nashua River Rail Trail (http://www.mass.gov/dcr/parks/northeast/nash.htm). Its 11 miles basically flat. Took me and a few friends 45 minutes each way. Not too bad for my first real ride and only had it in high gear for about 3 minutes. I've never really been a biker but after today, I can't wait for tomorrow's ride with the bike shop. By the end of the summer I hope to cut the rail trail time to 30 minutes.