I don't really feel the need to race. What does bother me is when I'm moving along at my pace, and I overtake some guy going way slower than I am, and then he pumps like hell to catch up and pass me, then can't maintain the pace. I usually slow down because I don't want to bother passing him, but eventually I'm down to several MPH slower than I want to be going.
This has only happened to me twice, because I rarely see other cyclists on the road (maybe 2 or 3 times a year will I see someone going the same way as I am).
There's no race to be had for me, because I'm no speed demon but I do ride daily, and the other people on the road are either fat-tire noodlers going 12 MPH or guys on the U of M team going 10 faster than me.
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Work: the 8 hours that separates bike rides.