
YFC Seeley Lake Challenge Triathlon/Duathlon is a triathlon and duathlon race on August 1, 2026 in Seeley Lake, MT, with entry fees from $35 to $100.
From the Organizer
Overview:
This is a great race to start your triathlon or duathlon racing career or as a family adventure. The triathlon is in open water, but wet suits are not necessary as the water is a reasonable temperature. Distances for adults is Mini - 150 yds, Short - 300 yards, Long - 600 yards. The running course is mostly on a trail shaded with giant old growth Western Larch trees - 3 miles. The bike ride is on a combination of paved county road, dirt road and trails - 7.8 miles. All racers are chipped including the kids and finish times are immediately available for printing and on devices.
Registration: At the venue, Riverpoint Campground Day Use area, from 2-5pm on Friday and 7-8:45 on Saturday. T-shirts will be distributed for those registering before July 15 at these times.
Everyone must park at Pyramid Mountain Lumber. There is no parking at the race site, and parking on Boy Scout or the neighbors driveways is not allowed. You may drop-off racers or spectators at the end of the road and they can walk or bike in and then park at Pyramid and either bike back to Riverpoint Campground or ride the shuttle.
We hope everyone stays for the awards ceremony where the winners stand on Olympic style boxes and get their medal. A great photo op moment.
Included in the racers fees are: parking, shuttle, T-shirt (if registered before July 15), race chip, snacks and medals for winners.
Spectators: FREE spectator parking and shuttle. Please feel free to bring folding chairs. Spectators must STAY OUT of the transition area by using a trail from the spectator area at the finish line to the beach.
Race Information: We have moved to a 3 second staggered start from the transition area starting at 9am. This has solved the congestion at the start of the race and since everyone is chipped there is no penalty for when you start. Everyone doing either the Triathlon or the Duathlon or participating as a team lines up by preference. All racers are chipped including the kids and finish times are immediately available for printing and on devices.
The triathlon is in open water, but wet suits are not necessary as the water is a reasonable temperature. Distances for adults is Mini - 150 yds, Short - 300 yards, Long - 600 yards. The running course is mostly on a trail shaded with giant old growth Western Larch trees - 3 miles. The bike ride is on a combination of paved county road, dirt road and trails - 7.8 miles (the county has closed the Boy Scout bridge until 2027).
The Duathlon running course is mostly on a trail shaded with giant old growth Western Larch trees - 3 miles. The bike ride is on a combination of paved county road, dirt road and trails - 7.8 miles (the county has closed the Boy Scout bridge until 2027).
The Kids Triathlon starts when most of the adults have completed the course so families can watch approximately 11am. The kids use the outside of the swimming area bouys as their course. They can stop and hold on if they need to, and life vests are acceptable. Parents may follow along INSIDE the buoys. The bike ride is on the first half of the adult run trail for 8 and under and the entire adult run trail for 9-12. The run is an out and back, to the campground road entrance for 8 and under and to the venue entrance for 9-12. They cross the same finish line as the adults.
Events
Weather
It's too far out for a forecast, so here's what weather on this date is normally like in the area. A race day forecast will replace this as race week approaches.
Typical High
86°
Typical Low
45°
Chance of Rain
22%
Based on US Climate Normals data from Seeley Lake Rs, 3 mi from the venue.
Host City
City Elevation
4,018 ft
Nearest Airport
MSO
Missoula Montana Airport · 34 mi
Time Zone
Mountain Time
From Endurance Grid
Line up lodging and travel early to lock in your race weekend.
Race Location
Your Next Start Line
Every finish line starts with a single decision. Claim your spot at YFC Seeley Lake Challenge Triathlon/Duathlon, put it on the calendar, and turn “someday” into a start date.
9
Days to train
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From Endurance Grid
This race spans more than one sport — here’s a guide to each, so you can understand what’s involved and decide if it’s the right fit. For course distances, logistics, and race-day specifics, always defer to the race organizer’s event page.
Swim, bike, run — back to back. The sprint distance makes it far more accessible than most people think. Three sports in one race means three movements to train and race day never gets monotonous.
Run, bike, run. The multi-sport format without the swim. Two disciplines, one race — a great bridge between running and triathlon.
Coming Up
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Plan your trip
Coming from out of town? There's more to Seeley Lake than race day. We'll help you line up nearby lodging, flights, a rental car, and things to do so you can make the most of your racecation.
Plan your trip to Seeley LakeFrequently Asked Questions (FAQs)
YFC Seeley Lake Challenge Triathlon/Duathlon
Aug 1, 2026