
UltraTrax AnnArbor is a running race on June 5, 2027 in Brighton, MI, with entry fees from $58 to $116.
On June 5, 2027, you’ll take on a full day of movement, challenge, and time on the trails at Mt. Brighton.
For the first time, UltraTrax is heading to Michigan. This is one of our more accessible mountain courses, combining open, rolling terrain with just enough elevation to keep things interesting. The first half of the loop moves across the resort’s former golf course, where wide grassy trails wind through fields and seasonal wildflowers. From there, the course heads back toward the lodge before taking on Mt. Brighton itself for a taste of climbing and a rewarding finish.
Whether you’re here to walk 7 miles or push all the way to 28, the challenge is yours to define.
10 hours. One 7-mile loop. Four distances. How far will you go?
Complete your goal within the 10-hour event window. Want another layer of challenge? Take it on with a 10, 20, or 35 lb. ruck or weighted vest.
The course will be clearly marked from start to finish, with well-stocked aid stations positioned along the route to keep you fueled and moving.
Trek Day
Saturday, June 5, 2027
Mt. Brighton, Brighton, MI
The start line is open between 7am-10am and is divided into corrals based on distance. 28 milers get started at 7am, 21 milers at 7:45am, 14 milers at 8:30am, and 7 milers at 9:15am.
UltraTrax is not a race, but it is a timed endurance event. You’ll have up to 10 hours to complete your chosen distance.
Move at your pace. Take breaks when you need them. Then keep going.
Bib Pickup
Your bib may be mailed to you in advance or picked up on event morning.
Participants registering after May 10, 2027 must pick up their bib in person.
Taking on the Ruck Challenge?
If you registered for a weighted division, you’ll need to bring your own ruck, backpack, or weighted vest.
Your pack will be weighed before you begin. Everything in the pack counts toward your required weight except perishable food and drinks.
What’s Waiting at the Finish
Finishers will receive:
After your trek, stick around and enjoy the Base Camp atmosphere at Mt. Brighton. Recover, refuel, and celebrate the miles with other participants.
Friends and family are welcome to join you at Base Camp.
What to Expect at Ann Arbor
An Accessible Mountain Experience
The first half of the course winds through the resort’s former golf course on wide grassy trails surrounded by open terrain and wildflowers. From there, you’ll make your way back toward the lodge and onto Mt. Brighton itself. The climbs add just enough elevation to break up the miles without the sustained ascents found at some of our more demanding mountain venues.
A Challenge You Choose
There is no single definition of success at UltraTrax. Walk your first 7 miles, chase 28, or add weight and see what you can carry.
Support Along the Way
Expect a well-marked course, stocked aid stations, event staff, and a community of people working toward their own goals alongside you.
Parking
Complimentary onsite parking will be available at Mt. Brighton.
More detailed arrival, parking, course, and event-day information will be sent as Trek Day gets closer.
Move With Purpose
UltraTrax is all about spending more time outside, moving farther than you thought you could, and helping protect the places that make those experiences possible.
A portion of UltraTrax proceeds supports efforts to protect and preserve the outdoor spaces we depend on.
You’re officially part of the pack! We’ll see you in Ann Arbor.
It's too far out for a forecast, so here's what weather on this date is normally like in the area. A race day forecast will replace this as race week approaches.
Typical High
76°
Typical Low
53°
Based on US Climate Normals data from Milford Gm Proving Ground, 7 mi from the venue.
City Elevation
941 ft
Nearest Airport
FNT
Bishop International Airport · 29 mi
Major Hub
DTW
Detroit Metropolitan Wayne County Airport · 31 mi
Time Zone
Eastern Time
From Endurance Grid
Line up lodging and travel early to lock in your race weekend.
Every finish line starts with a single decision. Claim your spot at UltraTrax AnnArbor, put it on the calendar, and turn “someday” into a start date.
249
Days to train
Enter your email and we'll send more your way.
Endurance Grid is here to help you understand the sport, decide if it’s the right fit, and learn how to prepare. For course distances, logistics, and race-day specifics, always defer to the race organizer’s event page.
With running, there's a distance for every fitness level, a community at every start line, and nothing beats the feeling of crossing a finish line you trained for.
Running is an endurance sport that rewards consistency, and showing up every week compounds in ways that will surprise you.
From 5K to marathon, running races are an accessible entry point into endurance sport. There's a distance for every fitness level and a community at every start line.
UltraTrax AnnArbor
Jun 5, 2027