Mary Lou Triathlon 2027
- Date
- Sunday, June 13, 2027
- Start time
- 8:00 AM start (Los Angeles)
- Location
- Weippe, Idaho
- Entry fee
- From $25
- Included with entry
- Includes a shirt
- Fundraising
- Takes optional donations when you register
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Official race websiteAdd to calendar: Apple or Outlook · Google
Events and entry fees
| Event | Distance | When | Entry fee | Cap |
|---|---|---|---|---|
| Mary Lou Team Triathlon | Sprint TriathlonSwim 300 yd · Bike 13 mi · Run 2.2 miRelay or teamOpen water swim | Jun 13, 20278:00 AM | $25 | – |
| Mary Lou Triathlon | Sprint TriathlonSwim 300 yd · Bike 13 mi · Run 2.2 miOpen water swim | Jun 13, 20278:00 AM | $25 | – |
Entry fees exclude processing fees. Prices and dates come from the race's registration page and refresh nightly.
The swim at Mary Lou Triathlon
This is an open water swim at Deyo Reservoir. The organizer's wetsuit note: wetsuits discouraged but allowed if water temperature is below 84°F.
From the organizer's own race information (source). Venues and rules can change from year to year; the race's current athlete guide decides.
Race day planning
Entry fee schedule
- $25 until Jun 12.
Online registration closes Jun 12, 2027, unless the race fills first.
Light and altitude
Sunrise on race morning is at about 4:50 AM, and the Mary Lou Team Triathlon starts at 8:00 AM. The start sits about 3,120 feet above sea level.
Fees exclude processing fees. Comparisons use current entry fees and published results from races nearby.
Start location and course
4137 Schmidt Mill Road, Weippe, ID 83553
The pin marks the address the race lists, which is usually the start. The organizers have not shared a course map with us yet.
Where Mary Lou Triathlon ranks
- No. 13 of 50 on Cheapest sprint triathlons in the US
- No. 20 of 50 on Cheapest triathlons in the US
National lists computed from results, entry fees, course maps and water temperatures; they refresh through the day.
2026 results
All results (2 years)Mary Lou Triathlon
Mary Lou Team Triathlon
Aggregated from official results (Competitive Timing) for Mary Lou Triathlon. Individual finisher names are not stored here.
How fast do you need to be at Mary Lou Triathlon?
At the 2026 Mary Lou Triathlon, the fastest tenth finished in 1:29:52 or better, the top quarter in 1:37:42, and half the field in 1:48:33; the last tenth came in after 1:57:17.
At the 2026 Mary Lou Team Triathlon, the fastest tenth finished in 1:37:44 or better, the top quarter in 1:45:02, and half the field in 1:57:12; the last tenth came in after 1:59:45.
What would my time get me?
Where a finish time would have placed in 2026.
Swim, bike and run splits at Mary Lou Triathlon
Compared with a typical sprint triathlon in the US, the median swim here was 3:17 faster, the bike 24:49 slower and the run 6:49 faster (swim lengths differ from race to race).
| Leg | Top 10% | Top 25% | Median | Slowest 25% |
|---|---|---|---|---|
| Swim | 7:01 | 8:12 | 8:53 | 10:09+ |
| T1 | 1:40 | 2:16 | 2:45 | 3:04+ |
| Bike | 1:00:10 | 1:04:08 | 1:10:34 | 1:14:25+ |
| T2 | 0:40 | 0:48 | 1:02 | 1:25+ |
| Run | 19:21 | 19:59 | 22:16 | 23:55+ |
Each column ranks finishers on that leg alone, from the race's published results. T1 and T2 are transitions.
Finishers by year
Up 33 percent since 2025.
All events combined, from official results.
Mary Lou Triathlon Sprint Triathlon year by year
From 2025 to 2026, the field went from 11 to 17 finishers, and the median time rose from 1:30:28 to 1:48:33.
| Year | Finishers | Median | Fastest tenth | Winner |
|---|---|---|---|---|
| 2026 | 17 (+55%) | 1:48:33 | under 1:29:52 | 1:24:55 |
| 2025 | 11 | 1:30:28 | under 1:22:31 | 1:20:47 |
From each year's official results for the Sprint Triathlon; virtual options are left out.
Typical race-day weather
Around June 13 the day usually runs from 50°F at dawn to 73°F in the afternoon, with measurable rain on about 28% of days. Cold snaps dip to 40°F and hot years reach 81°F.
Based on 75 days within a week of the date over the last 5 years, from historical weather for the start area. Not a forecast.
Race details
- Where
- 4137 Schmidt Mill Road, Weippe, ID 83553Map
- Course
- Road
- Start elevation
- About 3,120 feet
- Included with entry
- T-Shirt
- Donations
- Accepted when you register
- Distances
- Sprint Triathlon
- Editions
- 2027 (Jun 13, 2027), 2026 (Jun 14, 2026), 2025 (Jun 22, 2025)
Organize this race? Add details or a correction
Quick answers
- When is Mary Lou Triathlon?
- Sunday, June 13, 2027, starting at 8:00 AM.
- How much does it cost?
- Entry starts at $25 before processing fees.
- When does registration close?
- Online registration closes Jun 12, 2027, unless the race fills first.
- Do athletes get a shirt or medal?
- Entry includes a shirt, according to the race's registration page. Check it for sizes and whether kids' races get the same.
- Can I donate to a cause when I register?
- Yes. The registration form offers an optional donation, usually for the charity or nonprofit the race supports. The race's own page names the cause.
- What distances are offered?
- Sprint Triathlon.
- How big is it, and how fast?
- In 2026, 17 athletes finished the Mary Lou Triathlon; the median finish was 1:48:33 and the winner finished in 1:24:55.
- Where does it start?
- 4137 Schmidt Mill Road, Weippe, ID 83553.
From the organizers
June 13, 2027
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.