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triathlonRace day in 23 days

Horsetooth Tri Training Open Water Swim Series

Date
June 3, 2026
Distance
June 3 Swim Clinic · June 10 Swim Clinic · June 17 - Swim Clinic & more

From the Organizer

Horsetooth Tri Training Open Water Swim Series & Clinics
Whether you’re training for a triathlon, racing SUP, or just want to gain confidence in open water, this 8-week series offers hands-on practice and coaching in one of Colorado’s most iconic reservoirs.

Each week includes these options to choose from:
– Open Water Swim Clinics 
– SUP Clinics designed for stand-up paddle triathletes and recreational paddlers
– Open Water Swim Series to build confidence, endurance, and race readiness
– SUP races/challenges

The Open Water Swim Series is a non-competitive and non-timed event designed as a weekly training series to give people safe access and practice to open water swimming. There will be a low-key group start to simulate real race conditions, with swim distances of your choice. This series is ideal for all experience levels, whether you're aiming to complete your first tri or refine your open water game.

Distances & Pricing

June 3 Swim Clinic5 PMRegister →
June 10 Swim Clinic5 PMRegister →
June 17 - Swim Clinic5 PMRegister →
June 24 - Swim Clinic5 PMRegister →
July 8 Swim Clinic5 PMRegister →
July 15 Swim Clinic5 PMRegister →
July 22 Swim Clinic5 PMRegister →
July 29 Swim Clinic5 PMRegister →
Unlimited Package6 PMRegister →
6-Pack6 PMRegister →

Race Location

About This Sport

From Endurance Grid's Founder

Endurance Grid is here to help you understand the sport, decide if it's the right fit, and learn how to prepare. For course distances, logistics, and race-day specifics, always defer to the race organizer's event page.

Three sports, one race — swim, bike, run in sequence, with transitions that are a discipline of their own.

Open water, open roads, and competition with yourself. Cross the finish line knowing what it took to get there.

Triathlon

Swim, bike, run — back to back. The sprint distance makes it far more accessible than most people think.

Frequently Asked Questions (FAQs)

What is the Horsetooth Tri Training Open Water Swim Series?
Horsetooth Tri Training Open Water Swim Series is a triathlon event held in Fort Collins, CO. Learn more about the different endurance sports here.
When and where is the Horsetooth Tri Training Open Water Swim Series?
Wednesday, June 3, 2026 in Fort Collins, CO at South Swim Beach - Horsetooth Reservoir, Fort Collins, CO. Check the official event page for exact start times and wave schedules.
How do I register for the Horsetooth Tri Training Open Water Swim Series?
Registration is handled through their official registration page. Confirm pricing, distances available, and sign up there.

Horsetooth Tri Training Open Water Swim Series

Jun 3, 2026

Register →