My wife and I did the Miami Valley Stage Race in Dayton, OH in 1991. There were at least 10-11 tandems, can’t remember. Anyway, there was a Friday night prologue TT of 1k, Saturday morning TT of around 12 miles, Saturday night criterium and points sprints, and a Sunday road race about 55 miles.
Lot of fun.
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“Train hard until your legs are tanned, then keep going until the shape arrives.” -Jolanda Neff