You have 10 hours. How far can you go? UltraTrax is a single-day endurance walking challenge where you choose your distance: 7, 14, 21, or 28 miles. Complete it unweighted or take it up a level with a 10, 20, or 35 lb ruck and earn bonus swag along the way. Built for all experience levels, UltraTrax brings together anyone ready to see what they’re capable of.
UltraTrax Ann Arbor invites participants to explore grassy paths, rolling terrain, and gentle mountain elevation amid beautiful Southeast Michigan scenery. The first half of the course winds across the former golf course, now covered in wildflowers and open fields, before heading back toward the lodge and climbing the slopes of Mt. Brighton. Push your pace. Carry your weight. Move with the pack.
One of our more accessible mountain courses, participants can expect a highly approachable introduction to elevation while still getting the full UltraTrax challenge and experience.
UltraTrax is a 10-hour endurance challenge built to meet you where you are, and test what you’re capable of. Choose the distance and level that fits your goals, then see how far you can go.
You’ll begin at the main ski lodge, right off the parking lot.
Start / Finish: 950 ft | Peak: 1,350 ft | Gain: 629 ft
Each participant receives a commemorative patch, custom T-shirt unique to the venue, and Trail Wolf Medal (7 or 14 Miles) or a chance to earn the Grey Wolf Medal for conquering 21 or 28 miles.
Every UltraTrax event is built to deliver an exceptional day outside. Smart course design, strong support, and an atmosphere that charges you up.
Whether you’re walking your first loop or rucking all four, every level has a place
Every mile is tracked with accurate timing so you can focus on your effort
Clear signage and confident wayfinding keep you on track
Fully stocked aid stations located regularly along the course
Professional photographers capture the day. All included
Custom-designed swag for each venue, so every finish comes with something unique
Make a weekend of your UltraTrax trip with time to explore Ann Arbor. This energetic college town blends a walkable downtown, great restaurants, arts and culture, and plenty of outdoor space. Spend the day wandering the shops and restaurants of Main Street and Kerrytown, explore the trails at Nichols Arboretum, or get out on the Huron River for kayaking, canoeing, or a relaxed riverside walk. With more than 160 parks and miles of trails throughout the area, Ann Arbor makes it easy to keep the adventure going after your trek.
ExploreFind adventure, relaxation, and all-season fun just minutes into the Blue Ridge — Wintergreen Resort offers hiking, summer thrills, wellness, and mountain comfort all in one place.
Take a dip with complimentary access to the resort’s aquatics and fitness center — indoor/outdoor pools, hot tubs, and a relaxing spa atmosphere to help you recharge after a day outdoors
Join our team behind the scenes for a free registration and the opportunity to earn exclusive merch.
Find course maps, training tools, gear guides, and clear prep info—everything you need in one place to get ready with confidence.
A portion of every registration supports land conservation efforts and organizations dedicated to helping protect the trails we depend on. UltraTrax proudly commits to donating a minimum of $10,000 toward this cause each year.
Covers everything from pacing to cutoffs, training, rucking, aid, facilities, refunds, and safety.
We have an open start line from 7am-10am. However, we have time slots based on each level. They are:
Level 4 – 28 Miles
Start: 7:00 AM to 7:45 AM
Level 3 – 21 Miles
Start: 7:45 AM to 8:30 AM
Level 2 – 14 Miles
Start: 8:30 AM to 9:15 AM
Level 1 – 7 Miles
Start: 9:15 AM to 10:00 AM
Finish line closes at 5:45 PM.
Every UltraTrax course is assigned an UltraTrax Challenge Rating (UCR) to help participants understand the physical demands of the course before trek day.
The UCR is based on an objective analysis of each 7-mile loop, including elevation gain, sustained steepness, major climbs, recovery opportunities, and other unique course characteristics. Every course is rated on a scale from 1 to 10, with 10 representing the ultimate UltraTrax challenge.
The UCR reflects the challenge of completing one 7-mile loop. Participants tackling 14, 21, or 28 miles should expect the physical demands to increase substantially with each additional loop.
Whether you're looking for your first ultra walking adventure or your next big accomplishment, the UCR gives you a consistent way to compare every UltraTrax course.
Our events are rain or shine. We will only modify or cancel if dangerous weather / air conditions are present.
In the event of unsafe conditions, the in-person event will be canceled and shifted to a virtual event.
In this scenario, you will have two options:
