Summer OPEN Sprint Triathlon - Longmont, Colorado - Triathlon

The Summer OPEN Sprint Triathlon is a Triathlon race in Longmont, Colorado consisting of a Super Sprint.

The annual Summer OPEN Sprint Triathlon is the kick off to the Colorado Triathlon Season, and we kick it off in style! It's time to dust off the bike and pull the wetsuit out of the closet for this Colorado spring classic. This race, takes place at Union Reservoir in Longmont! From beginners tackling their first event to veterans tuning up for a competitive season the Summer OPEN is about friends and teammates, smiling and cheering.

Men's or woman's cut soft technical t-shirts are back in our traditional Summer OPEN "Red". Great goodie bags, one of our biggest expos of the year, a ton of raffles, and closed bike and run course are just some of the highlights. This race is capped at 500 athletes to maintain a fun, yet lively, and laid back feel.