Fontana Triathlon on Geneva Lake 2027
- Date
- Saturday, September 11, 2027
- Start time
- 6:45 AM start (Chicago)
- Location
- Fontana, Wisconsin
- Entry fee
- From $94 · goes up to $116 on May 30, 2027
- Included with entry
- Includes a shirt
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Events and entry fees
| Event | Distance | When | Entry fee | Cap |
|---|---|---|---|---|
| Sprint-Collegiate Team | Sprint TriathlonSwim 750 m · Bike 12.4 mi · Run 3.1 miRelay or teamOpen water swim | Sep 11, 20276:45 AM | $116 | – |
| Olympic Individual | Olympic TriathlonSwim 1,500 m · Bike 24.9 mi · Run 6.2 miOpen water swim | Sep 11, 20277:00 AM | $143$165 after May 30, 2027 | – |
| Olympic Relay | Olympic TriathlonSwim 1,500 m · Bike 24.9 mi · Run 6.2 miRelay or teamOpen water swim | Sep 11, 20277:00 AM | $408$471 after May 30, 2027 | – |
| Sprint Individual | Sprint TriathlonSwim 750 m · Bike 12.4 mi · Run 3.1 miOpen water swim | Sep 11, 20277:00 AM | $94$116 after May 30, 2027 | – |
| Sprint Relay | Sprint TriathlonSwim 750 m · Bike 12.4 mi · Run 3.1 miRelay or teamOpen water swim | Sep 11, 20277:00 AM | $267$329 after May 30, 2027 | – |
Entry fees exclude processing fees. Prices and dates come from the race's registration page and refresh nightly.
Water temperature and wetsuits at Fontana Triathlon on Geneva Lake
Around September 11, Lake Geneva typically runs about 72°F at the surface (67 to 76°F across 2011 to 2020). Wetsuits were legal every year at this date.
A model estimate from the USGS lake temperature model (daily surface temperatures for US lakes), not a measurement. Wetsuit cutoffs are USA Triathlon age-group rules. The race's own water temperature reading on race morning decides.
Race day planning
Entry fee schedule
- Sprint-Collegiate Team: $116 until Sep 11.
- Olympic Individual: $143 until May 30, then $165 until Jul 30, then $187 until Sep 11.
- Olympic Relay: $408 until May 30, then $471 until Jul 30, then $534 until Sep 11.
- Sprint Individual: $94 until May 30, then $116 until Jul 30, then $138 until Sep 11.
Online registration closes Sep 11, 2027, unless the race fills first.
Light and altitude
Sunrise on race morning is at about 6:28 AM, and the Sprint-Collegiate Team starts at 6:45 AM. The start sits about 930 feet above sea level.
Fees exclude processing fees. Comparisons use current entry fees and published results from races nearby.
Start location and course
454 Lake Street, Fontana, WI 53125
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 Fontana Triathlon on Geneva Lake ranks
- No. 25 of 50 on Largest olympic 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)Sprint Individual
Olympic Individual
Olympic Relay
Aggregated from official results (Race Day Events) for Fontana Triathlon on Geneva Lake. Individual finisher names are not stored here.
How fast do you need to be at Fontana Triathlon on Geneva Lake?
At the 2026 Sprint Individual, the fastest tenth finished in 1:27:24 or better, the top quarter in 1:35:04, and half the field in 1:48:08; the last tenth came in after 2:23:31.
At the 2026 Olympic Individual, the fastest tenth finished in 2:46:24 or better, the top quarter in 3:02:01, and half the field in 3:18:33; the last tenth came in after 3:57:45.
At the 2026 Olympic Relay, the fastest tenth finished in 2:51:22 or better, the top quarter in 2:53:33, and half the field in 3:13:23; the last tenth came in after 3:48:08.
| Age | Women | Men |
|---|---|---|
| Under 20 | 1:38:16 | 1:22:27 |
| 20-29 | 1:27:56 | 1:21:25 |
| 30-39 | 1:32:45 | 1:22:16 |
| 40-49 | 1:28:32 | 1:23:17 |
| 50-59 | 1:57:36 | 1:35:02 |
| 60-69 | 1:40:33 | 1:29:20 |
| 70+ | n/a | 2:01:47 |
Groups with fewer than five finishers are left out. Awards vary by race; check the race's rules.
What would my time get me?
Where a finish time would have placed in 2026.
Swim, bike and run splits at Fontana Triathlon on Geneva Lake
At the 2026 Sprint Individual, the bike decided the most: the middle of the field lost about 8:15 to the top quarter there, 44% of the gap across the three legs.
Compared with a typical sprint triathlon in Wisconsin, the median swim here was 10:48 slower, the bike 6:50 faster and the run 2:48 slower (swim lengths differ from race to race).
| Leg | Top 10% | Top 25% | Median | Slowest 25% |
|---|---|---|---|---|
| Swim | 17:04 | 19:36 | 22:18 | 25:22+ |
| T1 | 1:30 | 2:19 | 3:15 | 4:40+ |
| Bike | 38:04 | 41:53 | 47:04 | 52:55+ |
| T2 | 1:09 | 1:34 | 2:09 | 3:00+ |
| Run | 25:45 | 28:11 | 32:25 | 38:46+ |
Each column ranks finishers on that leg alone, from the race's published results. T1 and T2 are transitions.
At the 2026 Olympic Individual, the bike decided the most: the middle of the field lost about 12:57 to the top quarter there, 47% of the gap across the three legs.
Compared with a typical olympic triathlon in Wisconsin, the median swim here was 15:20 faster, the bike 4:22 slower and the run 2:46 slower (swim lengths differ from race to race).
| Leg | Top 10% | Top 25% | Median | Slowest 25% |
|---|---|---|---|---|
| Swim | 16:13 | 18:02 | 19:42 | 21:11+ |
| T1 | 2:07 | 2:38 | 3:20 | 4:21+ |
| Bike | 1:16:58 | 1:22:06 | 1:28:45 | 1:37:13+ |
| T2 | 1:24 | 2:00 | 2:39 | 3:22+ |
| Run | 47:15 | 53:21 | 1:01:04 | 1:09:07+ |
Each column ranks finishers on that leg alone, from the race's published results. T1 and T2 are transitions.
Finishers by year
Up 17 percent since 2025.
All events combined, from official results.
Fontana Triathlon on Geneva Lake Sprint Triathlon year by year
From 2025 to 2026, the field went from 354 to 254 finishers, and the median time rose from 1:13:45 to 1:48:08.
| Year | Finishers | Median | Fastest tenth | Winner |
|---|---|---|---|---|
| 2026 | 254 (-28%) | 1:48:08 | under 1:27:24 | 1:09:50 |
| 2025 | 354 | 1:13:45 | under 59:56 | 47:19 |
From each year's official results for the Sprint Triathlon; virtual options are left out.
How fast is it?
Slower than most Wisconsin sprint triathlons
The fastest quarter of the 2026 sprint triathlon field finished under 1:35:04, against 1:29:49 in a typical Wisconsin sprint triathlon, so times here run 6 percent slower.
- Olympic Triathlon: Slower than most US olympic triathlons. The fastest quarter of the 2026 olympic triathlon field finished under 3:02:01, against 2:43:48 in a typical US olympic triathlon, so times here run 11 percent slower.
Compares the fastest quarter of each field, so walkers and first-timers do not skew it. It reflects the course and the field together: a flat course, cool weather, or a competitive crowd all make times faster.
Typical race-day weather
Around September 11 the day usually runs from 59°F at dawn to 77°F in the afternoon, with measurable rain on about 23% of days. Cold snaps dip to 49°F and hot years reach 83°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
- 454 Lake Street, Fontana, WI 53125Map
- Course
- Road
- Start elevation
- About 930 feet
- Included with entry
- Event shirt; Event Shirt
- Distances
- Sprint Triathlon, Olympic Triathlon
- Editions
- 2027 (Sep 11, 2027), 2026 (Sep 12, 2026), 2025 (Sep 13, 2025)
Organize this race? Add details or a correction
Quick answers
- When is Fontana Triathlon on Geneva Lake?
- Saturday, September 11, 2027, starting at 6:45 AM.
- How much does it cost?
- Entry starts at $94 before processing fees, and rises to $116 on May 30, 2027.
- When does registration close?
- Online registration closes Sep 11, 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.
- What distances are offered?
- Sprint Triathlon, Olympic Triathlon.
- How big is it, and how fast?
- In 2026, 254 athletes finished the Sprint Individual; the median finish was 1:48:08 and the winner finished in 1:09:50.
- Is it a fast course?
- The fastest quarter of the 2026 sprint triathlon field finished under 1:35:04, against 1:29:49 in a typical Wisconsin sprint triathlon, so times here run 6 percent slower.
- Where does it start?
- 454 Lake Street, Fontana, WI 53125.
From the organizers
The Fontana Triathlon is a unique and historic race competed in Fontana Wisconsin, on beautiful Lake Geneva. The race offers a high quality, adventurous, and fun multisport experience for athletes of all abilities, from beginners, age group competitors, and elite athletes. The race is based at Fontana Beach. The swim will take place in Geneva Lake, the bike will be through the rolling hills surrounding Fontana and a cool, scenic and challenging run course through the streets and parks of Fontana. Athletes and spectators will enjoy a fun and adventurous experience in one of Midwest’s premier destinations.