Build 'em and race 'em. This Saturday at Union Reservoir also known as Calkins Lake up in Longmont. It's hard to believe that some of those things will actually float, and sometimes your suspicions are confirmed.
Warm weather, skimpy bikinis, and outrageous contraptions. What's not to like? Gates open at 9AM, race starts at 1 PM and ends at 3. Miscellaneous fun stuff continues until 8:30.