Tri Millennium 2027
- Date
- Race weekend: Friday to Saturday, July 23 to 24, 2027
- Start time
- 6:00 PM start (New York)
- Location
- Walker, Michigan
- Entry fee
- From $38 · goes up to $43 on Feb 1, 2027
- Included with entry
- Includes a shirt
- Fundraising
- Takes optional donations when you register
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 |
|---|---|---|---|---|
| Friday, Jul 23, 2027 | ||||
| Kids Tri (Ages 6-8) | Kids TriathlonSwim 50 yd · Bike 1.5 mi · Run 0.6 miOpen water swim | Jul 23, 20276:00 PM | $45 | 24 |
| Kids Tri (Ages 9-11) | Kids TriathlonSwim 50 m · Bike 1.5 mi · Run 0.6 miOpen water swim | Jul 23, 20276:00 PM | $45 | 32 |
| Kids Tri (Ages 12-15) | Kids TriathlonSwim 100 yd · Bike 3 mi · Run 1.2 miOpen water swim | Jul 23, 20276:30 PM | $45 | 18 |
| Saturday, Jul 24, 2027 | ||||
| Sprint Aquabike | AquabikeSwim 750 m · Bike 12.4 miOpen water swim | Jul 24, 20277:15 AM | $114$124 after Feb 1, 2027 | – |
| Sprint Duathlon | DuathlonRun 1.6 mi · Bike 12.4 mi · Run 3.1 mi | Jul 24, 20277:15 AM | $114$124 after Feb 1, 2027 | – |
| Sprint Tri | Sprint TriathlonSwim 750 m · Bike 12.4 mi · Run 3.1 miOpen water swim | Jul 24, 20277:15 AM | $114$124 after Feb 1, 2027 | – |
| Sprint Tri Relay (2 Person) | Sprint TriathlonSwim 750 m · Bike 12.4 mi · Run 3.1 miRelay or teamOpen water swim | Jul 24, 20277:15 AM | $79.50$84.50 after Feb 1, 2027 | – |
| Sprint Tri Relay (3 Person) | Sprint TriathlonSwim 750 m · Bike 12.4 mi · Run 3.1 miRelay or teamOpen water swim | Jul 24, 20277:15 AM | $53$56.33 after Feb 1, 2027 | – |
| Olympic Aquabike | AquabikeSwim 1,500 m · Bike 24.9 miOpen water swim | Jul 24, 20277:30 AM | $144$154 after Feb 1, 2027 | – |
| Olympic Duathlon | DuathlonRun 3.1 mi · Bike 24.9 mi · Run 6.2 mi | Jul 24, 20277:30 AM | $144$154 after Feb 1, 2027 | – |
| Olympic Tri | Olympic TriathlonSwim 1,500 m · Bike 24.9 mi · Run 6.2 miOpen water swim | Jul 24, 20277:30 AM | $144$154 after Feb 1, 2027 | – |
| Olympic Tri Relay (2 Person) | Olympic TriathlonSwim 1,500 m · Bike 24.9 mi · Run 6.2 miRelay or teamOpen water swim | Jul 24, 20277:30 AM | $57$64.50 after Feb 1, 2027 | – |
| Olympic Tri Relay (3 Person) | Olympic TriathlonSwim 1,500 m · Bike 24.9 mi · Run 6.2 miRelay or teamOpen water swim | Jul 24, 20277:30 AM | $38$43 after Feb 1, 2027 | – |
Entry fees exclude processing fees. Prices and dates come from the race's registration page and refresh nightly.
The Olympic Triathlon fee goes up to $43 on Feb 1, 2027.
Race day planning
Entry fee schedule
- Kids Tri (Ages 6-8) and Kids Tri (Ages 9-11) and Kids Tri (Ages 12-15): $45 until Jul 23.
- Sprint Aquabike and Sprint Duathlon and Sprint Tri: $114 until Jan 31, then $124 until May 2, then $139 until Jul 21, then $159 until Jul 23.
- Sprint Tri Relay (2 Person): $79.50 until Jan 31, then $84.50 until May 2, then $89.50 until Jul 21, then $99.50 until Jul 23.
- Sprint Tri Relay (3 Person): $53 until Jan 31, then $56.33 until May 2, then $59.67 until Jul 21, then $66.33 until Jul 23.
Online registration closes Jul 23, 2027, unless the race fills first.
Light and altitude
Sunrise on race morning is at about 6:24 AM, and the Kids Tri (Ages 6-8) starts at 6:00 PM. The start sits about 750 feet above sea level.
Fees exclude processing fees. Comparisons use current entry fees and published results from races nearby.
Start location and course
1400 Maynard Ave SW, Walker, MI 49534
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 Tri Millennium ranks
- No. 5 of 50 on Cheapest olympic triathlons in the US
- No. 45 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.
2025 results
All resultsSprint Tri
Olympic Tri
Sprint Aquabike
Aggregated from official results (Trivium Racing) for Tri Millennium. Individual finisher names are not stored here.
How fast do you need to be at Tri Millennium?
At the 2025 Sprint Tri, the fastest tenth finished in 1:23:47 or better, the top quarter in 1:30:51, and half the field in 1:41:39; the last tenth came in after 2:05:45.
At the 2025 Olympic Tri, the fastest tenth finished in 2:27:19 or better, the top quarter in 2:41:32, and half the field in 2:58:28; the last tenth came in after 3:29:52.
At the 2025 Sprint Aquabike, the fastest tenth finished in 58:22 or better, the top quarter in 1:01:13, and half the field in 1:04:55; the last tenth came in after 1:18:19.
| Age | Women | Men |
|---|---|---|
| Under 20 | 1:47:27 | 1:23:47 |
| 20-29 | 1:31:18 | 1:28:13 |
| 30-39 | 1:30:10 | 1:23:42 |
| 40-49 | 1:40:38 | 1:17:26 |
| 60-69 | n/a | 1:47:48 |
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.
Swim, bike and run splits at Tri Millennium
At the 2025 Sprint Tri, the bike decided the most: the middle of the field lost about 6:52 to the top quarter there, 42% of the gap across the three legs.
Compared with a typical sprint triathlon in Michigan, the median bike here was 1:53 slower and the run 0:44 faster.
| Leg | Top 10% | Top 25% | Median | Slowest 25% |
|---|---|---|---|---|
| Swim | 14:39 | 16:35 | 18:56 | 20:49+ |
| T1 | 1:46 | 2:11 | 2:41 | 3:48+ |
| Bike | 39:54 | 42:19 | 46:46 | 53:28+ |
| T2 | 1:12 | 1:26 | 1:50 | 2:41+ |
| Run | 23:09 | 25:45 | 28:53 | 34:55+ |
Each column ranks finishers on that leg alone, from the race's published results. T1 and T2 are transitions.
At the 2025 Olympic Tri, the bike decided the most: the middle of the field lost about 13:32 to the top quarter there, 48% of the gap across the three legs.
Compared with a typical olympic triathlon in Michigan, the median swim here was 0:47 slower and the run 0:54 faster (swim lengths differ from race to race).
| Leg | Top 10% | Top 25% | Median | Slowest 25% |
|---|---|---|---|---|
| Swim | 25:42 | 28:55 | 32:06 | 34:40+ |
| T1 | 1:36 | 1:58 | 2:33 | 3:28+ |
| Bike | 1:11:57 | 1:17:26 | 1:24:44 | 1:31:22+ |
| T2 | 1:12 | 1:25 | 1:48 | 2:38+ |
| Run | 43:07 | 50:01 | 55:01 | 1:04:10+ |
Each column ranks finishers on that leg alone, from the race's published results. T1 and T2 are transitions.
How fast is it?
Slower than most US sprint triathlons
The fastest quarter of the 2025 sprint triathlon field finished under 1:30:51, against 1:24:09 in a typical US sprint triathlon, so times here run 8 percent slower.
- Olympic Triathlon: About average for US olympic triathlons. The fastest quarter of the 2025 olympic triathlon field finished under 2:41:32, against 2:43:48 in a typical US olympic 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 23 the day usually runs from 63°F at dawn to 82°F in the afternoon, with measurable rain on about 23% of days. Cold snaps dip to 57°F and hot years reach 89°F.
Based on 80 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
- 1400 Maynard Ave SW, Walker, MI 49534Map
- Course
- Road
- Start elevation
- About 750 feet
- Included with entry
- T-Shirt
- Donations
- Accepted when you register
- Distances
- Kids Triathlon, Sprint Triathlon, Olympic Triathlon, Duathlon, Aquabike
- Editions
- 2027 (Jul 23, 2027), 2026 (Jul 24, 2026), 2025 (Jul 25, 2025), 2024 (Jul 26, 2024), 2023 (Jul 28, 2023), 2022 (Jul 29, 2022)
Organize this race? Add details or a correction
Quick answers
- When is Tri Millennium?
- It is a race weekend, Friday to Saturday, July 23 to 24, 2027: Kids Triathlon on Friday; Aquabike, Duathlon, Sprint Triathlon, Olympic Triathlon on Saturday.
- How much does it cost?
- Entry starts at $38 before processing fees, and rises to $43 on Feb 1, 2027.
- When does registration close?
- Online registration closes Jul 23, 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?
- Kids Triathlon, Sprint Triathlon, Olympic Triathlon, Duathlon, Aquabike.
- How big is it, and how fast?
- In 2025, 139 athletes finished the Sprint Tri; the median finish was 1:41:39 and the winner finished in 1:10:30.
- Is it a fast course?
- The fastest quarter of the 2025 sprint triathlon field finished under 1:30:51, against 1:24:09 in a typical US sprint triathlon, so times here run 8 percent slower.
- Where does it start?
- 1400 Maynard Ave SW, Walker, MI 49534.
From the organizers
Tri Millennium is one of West Michigan's longest-standing multi-sport events and a favorite among many local athletes. Located in the beautiful Millennium Park in Grand Rapids, MI, Tri Millennium offers an Olympic and Sprint distance triathlon, duathlon, and aquabike. Our Olympic race features a 1,500-meter swim, 24.8-mile bike, and 6.2-mile run. Our Sprint distance race features a 750-meter swim, 12.4-mile bike, and 3.1-mile run. Relay options are available for both races.