Canadian triathlon stars Peter Reid and Lori Bowden in their glory days (late 90's early 2000's) rode mostly on M4's, but I struggle to consider them as "vintage triathlon". For me, the benchmark between "vintage" and "modern" is the move from 650c to 700c wheels sizeI guess my only roadie qualifies as a retro triathlon bike. It's a 2000 (ish) S-Works M4 that I picked up for $300 CAD about 7 years ago. Spinergy's, CK headset, Ultegra Flight Deck (still working!), Thomson stem - about 19 pounds. I've since put a shorter riser stem and more subdued bar tape on it. It's comfortable enough for the short rides I do and feels down right speedy compared to my mountain bikes!
Road 1 by Rented Mule, on Flickr
Canadian triathlon stars Peter Reid and Lori Bowden in their glory days (late 90's early 2000's) rode mostly on M4's, but I struggle to consider them as "vintage triathlon". For me, the benchmark between "vintage" and "modern" is the move from 650c to 700c wheels size