Saturday is a big day in Marquette county.
The 6th annual YMCA Teal Lake Triathlon is set to test the endurance of all the participating athletes.
The adult triathlon begins at 9am, at the Teal Lake Beach with a quarter-mile swim.
Then, the participants will jump on their bikes for a twenty-kilometer ride, followed by a five-kilometer run to end the race.
Kids ages 5-12 will have their own triathlon at noon.