Nantucket Triathlon 2027
- Date
- Saturday, July 17, 2027
- Start time
- 6:30 AM start (New York)
- Location
- Nantucket, Massachusetts
- Entry fee
- From $175
- 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 |
|---|---|---|---|---|
| Individual - AquaBike | AquabikeSwim 450 yd · Bike 13.5 miOpen water swim | Jul 17, 20276:30 AM | $175 | 18 |
| Individual - Triathlon | Sprint TriathlonSwim 450 yd · Bike 13.5 mi · Run 3.4 miOpen water swim | Jul 17, 20276:30 AM | $175 | 745 |
| Relay Team (2 or 3 person) | Sprint TriathlonSwim 450 yd · Bike 13.5 mi · Run 3.4 miRelay or teamOpen water swim | Jul 17, 20276:30 AM | $275 | 105 |
Entry fees exclude processing fees. Prices and dates come from the race's registration page and refresh nightly.
The swim at Nantucket Triathlon
This is an open water swim at Jetties Beach. The organizer's wetsuit note: wetsuits optional.
From the organizer's own race information (source). Venues and rules can change from year to year; the race's current athlete guide decides.
Water temperature and wetsuits at Nantucket Triathlon
Around July 17, the water at NOAA's Nantucket Island station typically runs about 75°F (73 to 78°F across 2016 to 2025). Wetsuits were legal every year at this date.
Measured by the NOAA tide station nearest the race's listed location, about 1.4 km away; open beaches and sheltered bays nearby can differ by a few degrees. 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
- Individual - AquaBike and Individual - Triathlon: $175 until Jul 15.
- Relay Team (2 or 3 person): $275 until Jul 15.
Online registration closes Jul 15, 2027, unless the race fills first.
Light and altitude
Sunrise on race morning is at about 5:20 AM, and the Individual - AquaBike starts at 6:30 AM. The start sits about 0 feet above sea level.
Fees exclude processing fees. Comparisons use current entry fees and published results from races nearby.
Start location and course
4 Bathing Beach Road, Nantucket, MA 02554
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 Nantucket Triathlon ranks
- No. 7 of 50 on Largest triathlons in the US
- No. 7 of 50 on Largest sprint triathlons in the US
National lists computed from results, entry fees, course maps and water temperatures; they refresh through the day.
2025 results
All resultsIndividual
Relay Team 3 Person
Aggregated from official results (All Sports Events) for Nantucket Triathlon. Individual finisher names are not stored here.
How fast do you need to be at Nantucket Triathlon?
At the 2025 Individual, the fastest tenth finished in 1:17:41 or better, the top quarter in 1:23:54, and half the field in 1:32:19; the last tenth came in after 1:53:21.
At the 2025 Relay Team 3 Person, the fastest tenth finished in 1:19:15 or better, the top quarter in 1:27:47, and half the field in 1:34:05; the last tenth came in after 1:53:06.
| Age | Women | Men |
|---|---|---|
| Under 20 | 1:29:56 | 1:18:39 |
| 20-29 | 1:18:07 | 1:10:43 |
| 30-39 | 1:23:17 | 1:07:45 |
| 40-49 | 1:19:16 | 1:13:26 |
| 50-59 | 1:32:43 | 1:13:04 |
| 60-69 | 1:21:03 | 1:18:18 |
| 70+ | n/a | 1:31:03 |
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 2025.
How fast is it?
About average for US sprint triathlons
The fastest quarter of the 2025 sprint triathlon field finished under 1:23:54, against 1:24:09 in a typical US sprint triathlon, so times here are about average.
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 July 17 the day usually runs from 67°F at dawn to 71°F in the afternoon, with measurable rain on about 13% of days. Cold snaps dip to 64°F and hot years reach 75°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
- 4 Bathing Beach Road, Nantucket, MA 02554Map
- Course
- Road
- Start elevation
- About 0 feet
- Included with entry
- Nantucket Tri 2027 T-Shirt
- Donations
- Accepted when you register
- Distances
- Sprint Triathlon, Aquabike
- Editions
- 2027 (Jul 17, 2027), 2026 (Jul 18, 2026), 2025 (Jul 19, 2025), 2024 (Jul 20, 2024), 2023 (Jul 15, 2023)
Organize this race? Add details or a correction
Quick answers
- When is Nantucket Triathlon?
- Saturday, July 17, 2027, starting at 6:30 AM.
- How much does it cost?
- Entry starts at $175 before processing fees.
- When does registration close?
- Online registration closes Jul 15, 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, Aquabike.
- How big is it, and how fast?
- In 2025, 603 athletes finished the Individual; the median finish was 1:32:19 and the winner finished in 58:08.
- Is it a fast course?
- The fastest quarter of the 2025 sprint triathlon field finished under 1:23:54, against 1:24:09 in a typical US sprint triathlon, so times here are about average.
- Where does it start?
- 4 Bathing Beach Road, Nantucket, MA 02554.
From the organizers
www.acktri.com