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A fantastic sprint triathlon located on the fabulous Diamond Lake in Cassopolis, Michigan. The transition area is based out of the Diamond Lake marina.

500 Yard Swim out from the Marina into beautiful Diamond lake. 

The  13 mile bike  route is an out and back course, starting around the lake, then out on country roads, and back. Flat and fast.The 3.3 mile run goes the opposite direction around the lake on an out and back.

What we love about the the out and back courses is you get to see all of your friends on the course! 

Spectators are encouraged to bring a camp chair for the side of the road, where there will be non stop action! Of course, we always need volunteers so please encourage your family to actively spectate as a volunteer.

This race is a fundraiser for several local organizations, including the Cass County Fire Department.

NOTES: On race day, you cannot park at the Marina or Yacht Club. There is plenty of parking within a block or two of the race. When you arrive, just follow the instructions from the volunteers. 

Diamond Lake Triathlon is a fundraiser for Challenged Athletes Foundation and the Cass County Fire Department.