Not a ton of detail in this article and I belive alot of the data is still to come but it looks like the impact of the USA Pro Cycling Challenge is not has big as predicted.
Colorado Towns Measure Impact of Bike Race
Denver Business Journal
Date: Tuesday, August 30, 2011, 7:04am MDT
Towns along the route of the inaugural USA Pro Cycling Challenge are glad for the publicity being part of the course generated, but the economic impact varied, according to news reports.
The professional bike race didn’t bring in the 20,000 visitors Aspen was expecting, the Aspen Times reports, but restaurants saw a slight increase in business after the race’s stop in Aspen on Wednesday.
Restaurants were jammed in Breckenridge and retailers reported a big bump in sales, the Summit Daily News reports. More than 50,000 people lined the route as the race went through Breckenridge.