Donner Lake Triathlon

Overall score 3.1Good
Thin evidence2 sources#208 of 265 sprint triathlons

Truckee, United States · 0.4 / 9.66 / 3.22 km

Race day Sat 25 Jul 2026

Website (opens in a new tab)

Course: 0.4 km (0.2 mi) swim, 9.7 km (6.0 mi) bike, 3.2 km (2.0 mi) run. Sprint: 402 m (0.25 mi) swim, approximately 9.66 km (6 mi) bike, 3.22 km (2 mi) run.

Is it right for you?

First timer
Friendly3.7
PR potential
Fast3.5
Wetsuit swim
Usually3.5
Swim support
Good3.5
Crowds
Strong3.5

Watch out: Bike roads remain open to traffic. All 4

Held back by race (2.8) and swim (3.0).

Provisional: based on 2 sources. Why

Raced it? Your rating helps.

Score breakdown

Every score is out of 5, and 5 is always the better end.

Each bar is a range of 0.25 points; the light bar holds this race. The average race scores 3.4.

What does this score mean?

Why people love it

  • Short sprint: 402 m (0.25 mi) swim, 9.66 km (6 mi) bike, 3.22 km (2 mi) run.
  • A recent participant describes a relaxed, approachable atmosphere.
  • The current bike follows the lake road east toward Donner Memorial State Park.

Watch out for

  • Bike roads remain open to traffic.
  • Older reports climbing toward Rainbow Bridge describe a superseded sprint bike course.
  • Prepare for open water and the mountain setting.
  • One detailed historical source is an organizer ambassador.

Latest or next race

Sat 25 Jul 2026

Official race site(donnerlaketri.com, opens in a new tab)
Water
18–21 °C (64–69 °F)

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What racers say

Overall score 3.1 out of 5

2 reviews and race reports

2 reviews

  • Mone’ Haen, Big Blue Adventure ambassador

    Raced 2017 · Donner Lake Triathlon, athlete PDF

    Tone: Positive

    The organizer ambassador enjoyed her 2017 sprint, friendly volunteers, glassy lake and family atmosphere. Her bike climbed toward Rainbow Bridge, a route no longer used by the current sprint. Only the sprint portion of her two-race report is included; sponsorship and organizer hosting are disclosed.

    Covers Swim, Bike, Run

    Read on donnerlaketri.com (Donner Lake Triathlon, athlete PDF, opens in a new tab)
Raced Donner Lake Triathlon? Rate it

Pick a score, then tell the next athlete about the course, conditions and logistics.

Scores

Open a category for its ratings and the evidence behind them.

Good. How racers feel about it, how well it is run, and how it treats a first timer. Counts for 30% of the overall score.

Toughness: Tough

  • Racer satisfactionLoved3.7

    Sprint finishers describe an enjoyable, relaxed event they repeat. · Low confidence

  • OrganizationWell run3.6

    A historical ambassador praised volunteers; recent detailed operations accounts remain limited. · Low confidence

  • First timer friendlyFriendly3.7

    A recent participant finds the short distances and relaxed atmosphere approachable. · Low confidence

Course traits, not part of the score

  • PR potentialFast3.5

    Comparable finish-time data are unavailable. · Low confidence

Good. Wetsuit odds, water temperature, calm, and the experience of the start. Counts for 16% of the overall score.

  • Wetsuit legalUsually3.5

    Race-day water temperatures and wetsuit decisions are not documented across editions. · Low confidence

  • Water temperatureComfortable3.5

    Typical race-day water temperatures remain unverified. · Low confidence

  • Calm waterMostly calm3.5

    Recent athlete descriptions of water conditions are limited. · Low confidence

  • Swim easeEasy3.7

    The short 402 m (0.25 mi) lake swim limits exposure; altitude still warrants preparation. · Low confidence

  • Swim experienceGreat3.7

    Sprint participants describe comfortable, enjoyable lake swimming. · Low confidence

  • Swim supportGood3.5

    Recent athlete descriptions of swim safety coverage are limited. · Low confidence

Good. Road surface, closures, scenery and wind. Counts for 18% of the overall score.

  • Road surfaceGood3.5

    Recent athlete descriptions of pavement are limited. · Low confidence

  • Road closuresPartly closed2.8

    The official current bike course is open to vehicle traffic. · Medium confidence

  • Bike sceneryBeautiful3.5

    Few athletes have described bike scenery. · Low confidence

  • WindMostly calm3.5

    Typical bike wind conditions remain unverified. · Low confidence

Course traits, not part of the score

  • Bike speedFast3.7

    The current short lake-road course is described as flat by a recent participant. · Low confidence

  • Bike flatnessMostly flat3.7

    A recent sprint participant describes the short bike as flat; verified current ascent is unavailable. · Low confidence

  • Bike simplicityMostly simple3.5

    Recent athlete descriptions of turns and descents are limited. · Low confidence

Good. Crowds, aid stations, conditions underfoot and scenery. Counts for 13% of the overall score.

  • Crowd supportStrong3.5

    Few athletes have described spectators along the run. · Low confidence

  • Aid stationsGood3.5

    Recent athlete accounts do not establish consistent aid quality. · Low confidence

  • Run sceneryBeautiful3.5

    Few athletes have described run scenery. · Low confidence

  • Run conditionsEasy3.6

    The short 3.22 km (2 mi) road run limits duration; recent detailed run accounts remain thin. · Low confidence

Course traits, not part of the score

  • Run flatnessMostly flat3.5

    A verified run elevation total is unavailable. · Low confidence

Good. Air temperature, how predictable the weather is, setting, and spectating. Counts for 13% of the overall score.

  • Air temperaturePleasant3.5

    Typical race-day temperatures remain unverified. · Low confidence

  • Weather reliabilityReliable3.5

    Too few editions are documented to establish reliable weather. · Low confidence

  • Venue beautyLovely3.7

    Athletes praise the lake and surrounding granite-and-pine setting. · Low confidence

  • Spectator friendlyEasy3.5

    Recent spectator experiences are sparsely documented. · Low confidence

Course traits, not part of the score

  • Low altitudeLow3.5

    Race elevation has not been independently verified. · Low confidence

Good. Hotels, walkability, getting there, and the town around the race. Counts for 10% of the overall score.

  • Hotel availabilityGood3.5

    Athlete reports do not establish hotel availability. · Low confidence

  • Hotel valueGood3.5

    Athlete reports do not establish race-week accommodation value. · Low confidence

  • WalkabilityWalkable3.5

    Parking and walking arrangements are not fully documented. · Low confidence

  • Travel easeEasy3.5

    Airport transfers and travel experiences are sparsely documented. · Low confidence

  • LogisticsSimple3.5

    Current pickup and transition arrangements are only partly documented. · Low confidence

  • Town and foodGood3.5

    Athlete reports say little about local dining. · Low confidence

Course

Swim, 0.4 km (0.2 mi)

Donner Lake, West End Beach

Water
18–21 °C (64–69 °F)
Wetsuit
optional
Start
wave
Laps
1 lap

Bike, 9.7 km (6.0 mi)

Paved Donner Pass Road.

Laps
1 lap

Run, 3.2 km (2.0 mi)

Laps
1 lap
Surface
road

Similar races in North America

Key facts

Location
Truckee, California, United States
Typical month
July
Distances
0.4 km (0.2 mi) swim, 9.7 km (6.0 mi) bike, 3.2 km (2.0 mi) run

Sources

Pages we used for facts and ratings. See how we rate.

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