Course
Course Maps
Giant Acorn Olympic Distance. Giant Acorn Sprint Distance.
Giant Acorn Triathlon 2027
- Date
- Race weekend: Saturday to Sunday, September 25 to 26, 2027
- Start time
- 8:00 AM start (New York)
- Location
- Spotsylvania, Virginia
- Entry fee
- From $114 · goes up to $124 on Dec 16, 2026
- Included with entry
- Includes a shirt
- Fundraising
- Takes optional donations when you register
Register on RunSignup
Registration is open.
We earn a small commission when you register through this link, at no cost to you. Details
Official race websiteAdd to calendar: Apple or Outlook · Google
Events and entry fees
| Event | Distance | When | Entry fee | Cap |
|---|---|---|---|---|
| Saturday, Sep 25, 2027 | ||||
| Giant Acorn Olympic Aquabike (Individual) | AquabikeBike 0.9 miOpen water swim | Sep 25, 20278:00 AM | $139$149 after Dec 16, 2026 | – |
| Giant Acorn Olympic Triathlon (Individual) | Olympic TriathlonSwim 1,500 m · Bike 24.6 mi · Run 6.2 miOpen water swim | Sep 25, 20278:00 AM | $139$149 after Dec 16, 2026 | – |
| Giant Acorn Olympic Triathlon Relay | Olympic TriathlonSwim 1,500 m · Bike 24.6 mi · Run 6.2 miRelay or teamOpen water swim | Sep 25, 20278:00 AM | $189$199 after Dec 16, 2026 | – |
| Sunday, Sep 26, 2027 | ||||
| Giant Acorn Sprint Aquabike (Individual) | AquabikeOpen water swim | Sep 26, 20278:00 AM | $114$124 after Dec 16, 2026 | – |
| Giant Acorn Sprint Triathlon (Individual) | Sprint TriathlonSwim 750 m · Bike 15.5 mi · Run 3.1 miOpen water swim | Sep 26, 20278:00 AM | $114$124 after Dec 16, 2026 | – |
| Giant Acorn Sprint Triathlon Relay | Sprint TriathlonSwim 750 m · Bike 15.5 mi · Run 3.1 miRelay or teamOpen water swim | Sep 26, 20278:00 AM | $164$174 after Dec 16, 2026 | – |
Entry fees exclude processing fees. Prices and dates come from the race's registration page and refresh nightly.
Register on RunSignup
The Aquabike fee goes up to $124 on Dec 16, 2026.
Water temperature and wetsuits at Giant Acorn Triathlon
Around September 25, Lake Anna typically runs about 77°F at the surface (73 to 82°F across 2011 to 2020). Wetsuits are usually legal, but in warmer years the water topped 78°F, when wearing one makes you ineligible for age-group awards.
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
- Giant Acorn Olympic Aquabike (Individual) and Giant Acorn Olympic Triathlon (Individual): $139 until Dec 15, then $149 until Jan 31, then $159 until Mar 15, then $169 until May 31, then $179 until Jul 31, then $184 until Sep 20, then $194 until Sep 25.
- Giant Acorn Olympic Triathlon Relay: $189 until Dec 15, then $199 until Jan 31, then $209 until Mar 15, then $219 until May 31, then $229 until Jul 31, then $234 until Sep 20, then $244 until Sep 25.
- Giant Acorn Sprint Aquabike (Individual) and Giant Acorn Sprint Triathlon (Individual): $114 until Dec 15, then $124 until Jan 31, then $134 until Mar 15, then $144 until May 31, then $154 until Jul 31, then $159 until Sep 20, then $169 until Sep 26.
- Giant Acorn Sprint Triathlon Relay: $164 until Dec 15, then $174 until Jan 31, then $184 until Mar 15, then $194 until May 31, then $204 until Jul 31, then $209 until Sep 20, then $219 until Sep 26.
Online registration closes Sep 26, 2027, unless the race fills first.
Light and altitude
Sunrise on race morning is at about 6:59 AM, and the Giant Acorn Olympic Aquabike (Individual) starts at 8:00 AM. The start sits about 360 feet above sea level.
Fees exclude processing fees. Comparisons use current entry fees and published results from races nearby.
Start location and course
6800 Lawyers Rd, Spotsylvania, VA 22551
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 Giant Acorn Triathlon ranks
- No. 17 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)Giant Acorn Sprint Triathlon (Individual)
207
finishers
1:50:01
median
1:03:13
winning time
39% / 61%
women / men
Giant Acorn Olympic Triathlon (Individual)
197
finishers
3:11:01
median
2:05:16
winning time
35% / 65%
women / men
Giant Acorn Olympic Aquabike (Individual)
13
finishers
2:15:12
median
1:42:58
winning time
23% / 77%
women / men
Aggregated from official results for Giant Acorn Triathlon. Individual finisher names are not stored here.
How fast do you need to be at Giant Acorn Triathlon?
At the 2026 Giant Acorn Sprint Triathlon (Individual), the fastest tenth finished in 1:27:02 or better, the top quarter in 1:36:22, and half the field in 1:50:01; the last tenth came in after 2:21:05.
At the 2026 Giant Acorn Olympic Triathlon (Individual), the fastest tenth finished in 2:35:59 or better, the top quarter in 2:54:13, and half the field in 3:11:01; the last tenth came in after 3:57:09.
At the 2026 Giant Acorn Olympic Aquabike (Individual), the fastest tenth finished in 1:46:04 or better, the top quarter in 1:56:29, and half the field in 2:15:12; the last tenth came in after 2:31:14.
| Age | Women | Men |
|---|---|---|
| Under 20 | n/a | 2:07:56 |
| 20-29 | 1:39:33 | 1:14:10 |
| 30-39 | 1:49:45 | 1:26:23 |
| 40-49 | 1:38:33 | 1:20:21 |
| 50-59 | 1:45:19 | 1:23:54 |
| 60-69 | 2:00:05 | 1:32:21 |
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 Giant Acorn Triathlon
At the 2026 Giant Acorn Sprint Triathlon (Individual), the bike decided the most: the middle of the field lost about 9:35 to the top quarter there, 48% of the gap across the three legs.
Compared with a typical sprint triathlon in Virginia, the median swim here was 2:14 slower, the bike 7:59 slower and the run 0:46 faster (swim lengths differ from race to race).
| Leg | Top 10% | Top 25% | Median | Slowest 25% |
|---|---|---|---|---|
| Swim | 14:36 | 16:03 | 18:25 | 22:08+ |
| T1 | 2:12 | 2:48 | 3:38 | 4:38+ |
| Bike | 44:54 | 49:01 | 54:29 | 1:00:41+ |
| T2 | 1:21 | 1:37 | 1:57 | 2:36+ |
| Run | 22:18 | 25:22 | 29:04 | 32:57+ |
Each column ranks finishers on that leg alone, from the race's published results. T1 and T2 are transitions.
At the 2026 Giant Acorn Olympic Triathlon (Individual), the bike decided the most: the middle of the field lost about 15:13 to the top quarter there, 46% of the gap across the three legs.
Compared with a typical olympic triathlon in Virginia, the median swim here was 2:35 slower, the bike 7:11 slower and the run 0:30 slower (swim lengths differ from race to race).
| Leg | Top 10% | Top 25% | Median | Slowest 25% |
|---|---|---|---|---|
| Swim | 27:28 | 31:51 | 35:58 | 40:58+ |
| T1 | 2:29 | 3:07 | 4:01 | 5:09+ |
| Bike | 1:12:53 | 1:21:01 | 1:28:52 | 1:38:48+ |
| T2 | 1:35 | 1:53 | 2:26 | 3:10+ |
| Run | 45:13 | 50:57 | 57:57 | 1:09:50+ |
Each column ranks finishers on that leg alone, from the race's published results. T1 and T2 are transitions.
Finishers by year
About the same size since 2025.
437
2025
446
2026
All events combined, from official results.
Giant Acorn Triathlon Sprint Triathlon year by year
From 2025 to 2026, the field went from 232 to 207 finishers, and the median time rose from 1:48:12 to 1:50:01.
| Year | Finishers | Median | Fastest tenth | Winner |
|---|---|---|---|---|
| 2026 | 207 (-11%) | 1:50:01 | under 1:27:02 | 1:03:13 |
| 2025 | 232 | 1:48:12 | under 1:25:35 | 1:05:26 |
From each year's official results for the Sprint Triathlon; virtual options are left out.
How fast is it?
Slower than most Virginia sprint triathlons
The fastest quarter of the 2026 sprint triathlon field finished under 1:36:22, against 1:24:35 in a typical Virginia sprint triathlon, so times here run 14 percent slower.
- Olympic Triathlon: Slower than most Virginia olympic triathlons. The fastest quarter of the 2026 olympic triathlon field finished under 2:54:13, against 2:42:51 in a typical Virginia olympic triathlon, so times here run 7 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 25 the day usually runs from 61°F at dawn to 76°F in the afternoon, with measurable rain on about 28% of days. Cold snaps dip to 52°F and hot years reach 83°F.
Based on 76 days within a week of the date over the last 6 years, from historical weather for the start area. Not a forecast.
From the race's page
What the organizers of Giant Acorn Triathlon cover on their registration page, in brief.
Shirt and medal
Race more get cool gear! 2027 SWAG
2027 Kinetic Cup Series: Race More, Earn More! Complete three or more 2027 Kinetic Multisports events to start earning qualifier rewards. Complete at least five events to qualify for Kinetic Cup Series scoring and awards! Stage 1 — Q3…
Awards
Photos/Videos
See what all the excitement was all about or find race photos and videos from prior races. Feel free to download and share on social media! 2026. Giant Acorn Olympic. Giant Acorn Olympic Awards. Giant Acorn Sprint. Giant Acorn Sprint…
Rules and FAQ
USA Triathlon (USAT) Sanctioned Event
The Competitive Rules are intended to provide for the orderly and consistent administration of events sanctioned by USA Triathlon and are not designed to establish standards of care for the safety of participants or other persons. Every…
Race details
- Where
- 6800 Lawyers Rd, Spotsylvania, VA 22551Map
- Course
- Road
- Start elevation
- About 360 feet
- Included with entry
- Technical Race Shirt
- Donations
- Accepted when you register
- Distances
- Sprint Triathlon, Olympic Triathlon, Aquabike
- Editions
- 2027 (Sep 25, 2027), 2026 (Sep 26, 2026), 2025 (Sep 20, 2025), 2024 (Sep 21, 2024), 2023 (Sep 23, 2023), 2022 (Sep 24, 2022)
Organize this race? Add details or a correction
Quick answers
- When is Giant Acorn Triathlon?
- It is a race weekend, Saturday to Sunday, September 25 to 26, 2027: Aquabike, Olympic Triathlon on Saturday; Aquabike, Sprint Triathlon on Sunday.
- How much does it cost?
- Entry starts at $114 before processing fees, and rises to $124 on Dec 16, 2026.
- When does registration close?
- Online registration closes Sep 26, 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, Olympic Triathlon, Aquabike.
- How big is it, and how fast?
- In 2026, 207 athletes finished the Giant Acorn Sprint Triathlon (Individual); the median finish was 1:50:01 and the winner finished in 1:03:13.
- Is it a fast course?
- The fastest quarter of the 2026 sprint triathlon field finished under 1:36:22, against 1:24:35 in a typical Virginia sprint triathlon, so times here run 14 percent slower.
- Where does it start?
- 6800 Lawyers Rd, Spotsylvania, VA 22551.
From the organizers
The Giant Acorn Triathlon Festival features Olympic and Sprint distance races staged out of beautiful Lake Anna State Park. With a sandy beach time trial start, a refreshing (low 70’s) freshwater swim, rolling country roads for the bike and a run course that stays completely within the State Park. The race is amazing for so many reasons, but the best part is the park itself with a beautiful venue and banked stadium style seating overlooking the swim course, run course and finish line! Bring the family as the park features miles of trails, a playground, swimming beach and visitors center featuring a “gold mine”.