Ugly Dog Triathlon

Sat July 22, 2023 Grass Lake, MI 49240 US Directions
"Ugly Dog Gravel Tri is a great event! Swim is nice and the gravel roads rocks. The trail run is a perfect out and back. Swag and vibe is excellent!"

- Katy Stone, 2022 Participant
Countdown to Race Day



$125 - $155 9:00AM - 9:30AM EDT
Events: Olympic Triathlon Sprint Triathlon


$115 - $145 9:00AM - 9:30AM EDT
Events: Olympic Duathlon Sprint Duathlon


$115 - $145 9:00AM - 9:30AM EDT
Events: Olympic Aquabike Sprint Aquabike


$155 - $185 9:00AM - 9:30AM EDT
Events: Olympic Relay Sprint Relay

Ugly Dog Virtual Event

$55 Registration ends July 22, 2023 at 11:59pm EDT

Race Website

Additional race information can be found at


11500 Seymour Rd.
Grass Lake, MI US 49240



Ugly Dog is based out of Waterloo Recreation Area, in Grass Lake, Michigan, 15 miles south of Jackson. The race begins with a swim in Big Portage Lake followed by a bike ride on the gravel roads, challenge yourself with a run through the Waterloo Recreation Area.

This event has both Sprint and Olympic distances along with Duathlon, Aquabike, and Relay options.

In the spirit of bike racing, drafting rules will not be enforced in the Ugly Dog events.  

USA Triathlon Membership/One-Day Pass
You will be asked to enter your current USAT Membership number during checkout. USAT Membership or One Day Pass is required to participate in this USAT Sanctioned event. One Day Pass fee is $15.

The venue for this event requires either a Michigan Recreation passport on your vehicle or a $10 one day parking pass to purchase onsite. 

Race Contact Info

If you have any questions about this race, click the button below.

Other Tris4Health Events

We are more than just triathlons.

While we started with Grand Rapids Triathlon and Michigan Titanium, we have since expanded into the gravel scene. We now produced not only three gravel bike events (Waterloo G+G, The Dirty Mitten Gravel Bike Race & Rode To Hell), but we also have two of only a few gravel triathlons in the country: Ugly Dog Gravel Triathlon and The Dirty Mitten. If trail running is your thing, we also offer the Brainy Day Trail Run.

NEW FOR 2023:
Join us as Gran Fondo returns as the Grand Rapids Gran Fondo, now a Tris4Health cycling event! 

Please visit to see all of our events!



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