Mary Lou Triathlon
About this race
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.
Pick your distance
Triathlon
Mary Lou Triathlon
Mary Lou Team Triathlon
Typical race-day weather
Based on 2 years of historical conditions on this event's race dates in Weippe.
Course
Route map and elevation profile
No course map published yet.
The organizer hasn't released a route for this event, and we don't publish guesses. If you're the organizer, send us a GPX file and we'll draw the profile.
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Where this page comes from. Race details were last updated on . We re-check listings regularly and again in the week before race day.
- Entries, prices, waves and inclusions — the event's official registration page
- Temperature and humidity — Copernicus ERA5 reanalysis via Open-Meteo (CC BY 4.0)
- Elevation and terrain relief — Copernicus DEM GLO-90, ESA (CC BY 4.0)
- Comparisons and counts — Race Discovery calendar, 1 Weippe event
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