Mary Lou Triathlon
- Date Sun 14th June 2026
- Time 8:00AM PDT
- Location Weippe, Idaho
- Price $27.95
- Races 2 races
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Event summary
Get ready for an exhilarating day at the Mary Lou Triathlon, taking place on Sunday, June 14, 2026, at the picturesque Deyo Reservoir just outside Weippe, Idaho! This exciting event features a unique race format that includes a 300-yard swim from the sandy beach, followed by a thrilling 13-mile mountain bike ride along scenic trails, and wraps up with a refreshing 2.2-mile run around the reservoir.
Originally known as the Bald Mountain Triathlon, this event has evolved to honor the Deyo Family matriarch and promises to deliver a fantastic experience for participants of all levels. With a single transition area and minimal traffic on the lightly traveled roads and trails, athletes can focus on their performance while enjoying the stunning natural surroundings. Make sure to mark your calendars and join in on the fun and camaraderie at this unforgettable triathlon!
Originally known as the Bald Mountain Triathlon, this event has evolved to honor the Deyo Family matriarch and promises to deliver a fantastic experience for participants of all levels. With a single transition area and minimal traffic on the lightly traveled roads and trails, athletes can focus on their performance while enjoying the stunning natural surroundings. Make sure to mark your calendars and join in on the fun and camaraderie at this unforgettable triathlon!
Organiser's Description
June 14, 2026
This race was previously named the Bald Mountain Triathlon, and was held at Bald Mountain Ski Area in 2020, but moved to Deyo Reservoir for 2021 and 2022 and was renamed in honor of the Deyo Family matriarch in 2023.
The race will be located at the Deyo Reservoir outside of Weippe, Idaho. The swim will take place from the sandy beach and traverse 300 yards before transitioning to mountain bike gear and leaving the reservoir along Schmidt Mill Road to 3-mile Road to Fidler Road and then along a forested trail back to 3-mile Road and the reservoir, approximately 13 miles. The run course will be the well-travelled 2.2 mile trail around the reservoir. There will be a single transition area.
Packet pick up:
Saturday, June 13, 3:00 - 5:30pm at the Schmidt House across from Deyo Reservoir
Sunday, June 14, 6:30 - 7:00am at Deyo Reservoir
Athlete briefing: Saturday, June 13, 5:00pm at Schmidt House and Sunday, June 14, 7:30am at Deyo Reservoir
Start time: Sunday, June 14, 8:00 am; Deyo Reservoir
Limited Parking Available
Camping available http://www.weippe.com/deyo/
Safety:
No roads are closed for this race, however there will be traffic control at major intersections. It is your responsibility to yield to traffic. The good news is most of this race is on lightly travelled gravel roads and trails and traffic is minimal in the areas where you will be sharing the road.
Rules:
This is not a USA Triathlon (USAT) sanctioned event and you do not need to have a USAT card to participate, however we will be abiding by USAT rules. https://www.teamusa.org/USA-Triathlon/About/Multisport/Competitive-Rules
We discourage the use of wetsuits for this short swim, however if water temperature is less than 84 degrees they are allowable.
No lifejackets allowed.
Helmets required for the duration of the bike ride.
*_YOUTH REGISTRATION*_ https://docs.google.com/document/d/1u-0A5e5p-0a9JRsnqedWKeygEvFlPfI01YAsCZx6WjQ/edit?usp=sharing
This race was previously named the Bald Mountain Triathlon, and was held at Bald Mountain Ski Area in 2020, but moved to Deyo Reservoir for 2021 and 2022 and was renamed in honor of the Deyo Family matriarch in 2023.
The race will be located at the Deyo Reservoir outside of Weippe, Idaho. The swim will take place from the sandy beach and traverse 300 yards before transitioning to mountain bike gear and leaving the reservoir along Schmidt Mill Road to 3-mile Road to Fidler Road and then along a forested trail back to 3-mile Road and the reservoir, approximately 13 miles. The run course will be the well-travelled 2.2 mile trail around the reservoir. There will be a single transition area.
Packet pick up:
Saturday, June 13, 3:00 - 5:30pm at the Schmidt House across from Deyo Reservoir
Sunday, June 14, 6:30 - 7:00am at Deyo Reservoir
Athlete briefing: Saturday, June 13, 5:00pm at Schmidt House and Sunday, June 14, 7:30am at Deyo Reservoir
Start time: Sunday, June 14, 8:00 am; Deyo Reservoir
Limited Parking Available
Camping available http://www.weippe.com/deyo/
Safety:
No roads are closed for this race, however there will be traffic control at major intersections. It is your responsibility to yield to traffic. The good news is most of this race is on lightly travelled gravel roads and trails and traffic is minimal in the areas where you will be sharing the road.
Rules:
This is not a USA Triathlon (USAT) sanctioned event and you do not need to have a USAT card to participate, however we will be abiding by USAT rules. https://www.teamusa.org/USA-Triathlon/About/Multisport/Competitive-Rules
We discourage the use of wetsuits for this short swim, however if water temperature is less than 84 degrees they are allowable.
No lifejackets allowed.
Helmets required for the duration of the bike ride.
*_YOUTH REGISTRATION*_ https://docs.google.com/document/d/1u-0A5e5p-0a9JRsnqedWKeygEvFlPfI01YAsCZx6WjQ/edit?usp=sharing
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4137 Schmidt Mill Road, Weippe, 83553, ID, United States
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Mary Lou Triathlon
