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The Boulder Stroke & Stride enters its 21st season in 2022, and offers Boulder area athletes a fun 1-lap 750 Meter Swim, or 2-Lap 1500 Meter swim in Boulder Reservoir, followed by a 5k run on the reservoir dam on 8 Thursday evenings (plus one Wednesday evening) throughout the summer. Many participants make their open-water […] |
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Are you looking for a new challenge this summer? Register for the 8th Annual Frisco Triathlon featuring stand-up-paddle boarding, mountain biking, and trail running. This twist on a triathlon is open to all ability levels and encourages athletes to take on a new multi-sport event. The Frisco Triathlon was named “Best Triathlon” in Elevation Outdoors […] |
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Race routes integrate beginner and intermediate levels of single-track trails, dirt and gravel roads. The venue of the San Juan National Forest could not be more perfect for athletes as they trek through aspen groves, grassy fields, and the dreaded rocky Piedra Stock driveway. The course is fast, testing each competitor’s endurance, speed and ability. |
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The Boulder Peak Triathlon, Duathlon & Aquabike on July 10th is one of the countries longest and most well-known triathlons. For the veteran or first time racer, this is THE can’t miss event of the summer triathlon season, and the crown jewel of the Colorado Triathlon Series. Racers are tackling the infamous “Olde Stage” Hill, […] |
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The Boulder Stroke & Stride enters its 21st season in 2022, and offers Boulder area athletes a fun 1-lap 750 Meter Swim, or 2-Lap 1500 Meter swim in Boulder Reservoir, followed by a 5k run on the reservoir dam on 8 Thursday evenings (plus one Wednesday evening) throughout the summer. Many participants make their open-water […] |
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The Boulder Stroke & Stride enters its 21st season in 2022, and offers Boulder area athletes a fun 1-lap 750 Meter Swim, or 2-Lap 1500 Meter swim in Boulder Reservoir, followed by a 5k run on the reservoir dam on 8 Thursday evenings (plus one Wednesday evening) throughout the summer. Many participants make their open-water […] |
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The inaugural Lone tree Sprint was a success and we’re happy to be continuing this event on July 23rd! We LOVE this event, great mid-season race, open water swim and bike course with minimal traffic and a flat out and back run on asphalt and dirt. With a slightly longer bike than your traditional Sprint, […] 
As one of Colorado’s most popular summer triathlons, Tri Boulder offers many different multisport race distances, all in one eventful day! Join us for a full day of racing at the Rez. |
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After last summer this event instantly became a personal favorite for our staff, volunteers, and athletes - come find out why! We couldn't be more excited about this course, this lake, and the overall experience. The swim starts out in the surprisingly warm waters of Steamboat Lake (74 degrees average race temp), then athletes transition […] 
When you think of the world's greatest, most sought after triathlons, a very short list of events from around the world comes to mind. The best of the best-triathlon royalty. IRONMAN Lake Placid is one of those special events, an icon of the sport that draws in triathletes from all over the world to test […] |
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The Boulder Stroke & Stride enters its 21st season in 2022, and offers Boulder area athletes a fun 1-lap 750 Meter Swim, or 2-Lap 1500 Meter swim in Boulder Reservoir, followed by a 5k run on the reservoir dam on 8 Thursday evenings (plus one Wednesday evening) throughout the summer. Many participants make their open-water […] |
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This open water swimming oasis has been the hottest venue in Colorado since our first open water swim back in 2016. Who's ready for 2022? Don't delay, last year we sold out in just a few months! The course will be set up as a 1.2 mile out and back, with the option to swim […] |
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We didn't get the chance to launch this race in 2020, but that didn't diminish our passion for this brand new style of triathlon! To say this race is “unique” would be an understatement! Limited to just 250 athletes, we're excited to announce the first ever gravel triathlon to the Colorado triathlon landscape! This event […] |
