Before 8spd. was invented the Boulder Cycling Club and Team Monger were putting on very informal races Sterling Circle on east Valmont.
Apparently the developers had built the roads but no or few buildings were in place so every Tuesday riders would show up to race in 1 race... men, women, beginners to pros. The BVC (Boulder Velo Club) even had no permits, no cops (approval) and no officials... just riders, their bikes and their passion to compete. The only requirement for the BVC event was that you joined the Boulder Velo Club which was $12... that is one fee for the entire year! Since the race was not an official race riders didn't have race numbers so scoring was "blue helmet guy, green bike, etc. The course was a 1/3 mile loop on what is now called Sterling Circle. The format was a 40 lap points race, sprinting every 4th lap for 3 deep points. Racing started in April with 20 lap races (due to sunlight) season ended with an omnium, which consisted of a points race, a miss-n-out, a one-lap flying start TT, and a scratch race. The BVC event was started by Harry Buss and Dave Finamore.
The Team Monger event was a permitted race under USCF/BRAC and was only open to Cat 4 and juniors since its purpose was to act as a learning crit series for beginners. This development was owned by the Eggleston who just so happen to have a son at CU and was the roommate of the guy who made the Team Monger race happen. This relationship made it easy to get the permission to race there.
Regardless of which race you did the course had three hazards: Two concrete drainage "troughs" and the sharp turn at the north end. The trough at the southeast corner had a two-inch gap between the concrete and the asphalt, which was fixed free of charge one day by one of the racers, who was a concrete contractor. The real hazard was hitting the inside curb, which I don't think ever happened.
"Some years we'd run the points race series too long and had to cut the omnium short for lack of daylight. Everyone looked forward to the omnium and we'd get a big turnout."