GREAT JOB!!!
I don't think I could average over 18 mph on a 50 mile course, and I know going into a 20 mile headwind, I would be brought down to under 16 easily. I did a short 20+ yesterday, and with the gusts I only averaged 16.5. Maybe riding in a group is better, but since I don't ever ride in a group, I may never know.
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2007 Jamis Ventura Comp
2006 Jamis Explorer 2.0
2000 Specialized Hardrock (bought used)
Swim, Bike, Run and sounds like fun