
Tri Millennium
West Michigan's longest-standing multi-sport event offers a fast, flat run through Millennium Park.
Race Date
Jul 24, 2026
Location
Walker, MI
Quick facts
- Date
- Friday, July 24, 2026
- Location
- Walker, Michigan
- Distance
- Half marathon (13.1 mi) + 15.9 Miles, 18.6 Miles, 31.93 Miles, 37.2 Miles, 25.6 Miles, 2 Miles, Kids Tri (Ages 9-11), 4 Miles
- Course
- Loop Course
- Terrain
- Road
- USATF certified
- Not listed
Highlights
Good For
Atmosphere
Course
The Experience
Tri Millennium is a beloved West Michigan institution, drawing athletes for its fast, flat run course through the scenic Millennium Park in Grand Rapids. This event, a staple for local competitors, also welcomes participants from across the region looking for a well-organized race.
The park's paved trails offer a forgiving surface, ideal for setting personal bests. The surrounding roads, while noted as having rolling terrain for the bike leg, complement the overall fast-and-flat character of the run, making it a prime location for both seasoned athletes and those taking on their first multi-sport challenge.
With professional timing and a dedicated team of volunteers, Tri Millennium ensures a smooth race day experience. The event proudly supports Bridge Street Ministries, a local youth organization, with 100% of donations contributing to their vital work in the Grand Rapids community.
Race-provided description
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. The inland waters of Millennium Park are typically calm and pleasant, the surrounding roads follow the rolling terrain for the bike course, and the paved trails through the park are flat and fast, making Tri Millennium a great race for the elite athlete looking for a summer "A" race, a beginner athlete looking to complete their first triathlon, or a primer race for those prepping for the MiTi half or full triathlon later in August. With professional timing from Trivium Racing and a full complement of volunteers and support on race day, Tri Millennium is a race for everyone. Tri Millennium's charity partner is Bridge Street Ministries, a Christian urban youth ministry in Grand Rapids' West Side, working to support the spiritual, academic, and social development of inner-city youth, leading them with a vision of hope and restoration and believing that they will be the future leaders of our community. 100% of the donations from Tri Millennium will go to support this important work. For more information, visit bsmgr.org.
Logistics
Race Day
Friday, July 24, 2026
Start Time
7:15 AM
Giveaway
T-Shirt
Start Location
1400 Maynard Ave SW, Walker, MI, 49534
Course Info
Course Type
Loop Course
Terrain
road
Scenery
Park
Surface
Paved
Difficulty
Ultra-Flat
Net Drop/km
0 m (Flat)
Separation
0.0%
Also Offers
Quality Score
first year
no finisher counts yet
small race — neutral
needs a few years of results
3 timing sources · 8 photos
no finisher data yet
no winner time yet
typical high 83°F
Race Day Weather
5-year historical avgStart (Low)
64°
Afternoon (High)
83°
Hot conditions — adjust pace expectations, prioritize hydration
0.1"
Precipitation
10 mph
Wind
70%
Humidity
Race Photos
Frequently asked
When is the Tri Millennium?
The Tri Millennium is held on Friday, July 24, 2026, starting at 7:15 AM.
Where does the Tri Millennium take place?
It takes place in Walker, Michigan.
What distances does the Tri Millennium offer?
The half marathon (13.1 miles), plus 15.9 Miles, 18.6 Miles, 31.93 Miles, 37.2 Miles, 25.6 Miles, 2 Miles, Kids Tri (Ages 9-11), 4 Miles.
Is the Tri Millennium course flat and good for a PR?
The Tri Millennium is a ultra-flat, loop course course.
HalfRuns editorial — independent, no paid placement.
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