Thumb Coast Ultra & Relay - 50 Mile, 50K, & 50 Mile Relay

Those wishing to race in the ruck category must provide their own pack/vest and weight. Ruckers and their packs/vests will both will be weighed before the race start.

• Ruckers under 150 lbs must have a pack/vest with 20 lbs
• Ruckers over 150 lbs must have a pack/vest with 30 lbs

 

Additional Rules:

• Ruck weight must be on the athlete at all times.
• No specific pack/vest is required.
• Ruck weight may be a combination of the pack and the weight.
• Ruck weight may not be consumable, i.e. water and food carried does not count as the ruck weight.

 

Trivium Racing Rucking Series:

Trivium Racing’s Michigan Series lets participants compete across a variety of road and trail races ranging from 5K to 50 miles, earning points toward year-end awards, including free race entries. Participants must complete at least four events to qualify, with their top six performances counting toward the standings. New for 2026, a separate Michigan Ruck Series offers ruck-specific events, with awards for those who complete at least three.

Ruck Series Events:

​Winter Trail Fest Eastside Half Marathon & 5 Mile:  February 14

Thumb Coast Ultra 50 Mile, 50K, & 50 Mile Relay:  April 25

Summer Trail Fest Ultra 50 Mile, 50K, Half Marathon, & 5 Mile:  June 13

Black Toenail Friday Half Marathon & 7.5 Mile:  November 27

 

If you would like more information about rucking, click here.