Tri Millennium
- Date
- Last held Jul 24, 2026, next date to be announced
- Location
- Walker, Michigan
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Official race websiteStart 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.
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.
| 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.
| 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.
Race details
- Where
- 1400 Maynard Ave SW, Walker, MI 49534Map
- Course
- Road
- Distances
- Kids Triathlon, Sprint Triathlon, Olympic Triathlon, Duathlon, Aquabike
- Editions
- 2026 (Jul 24, 2026), 2025 (Jul 25, 2025), 2024 (Jul 26, 2024), 2023 (Jul 28, 2023), 2022 (Jul 29, 2022), 2021 (Aug 6, 2021)
- Status
- The next edition has not been announced yet. Past events: MilTri, MilTri 2017, Kids Tri (Ages 11-15), Kids Tri (Ages 6-10), My Team Triumph.
Organize this race? Add details or a correction
Quick answers
- When is Tri Millennium?
- The next date has not been announced.
- How much does it cost?
- See the registration page for current pricing.
- 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.
- 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.