Sporting plaid pants and standing over a map of Iowa, Michael Dahlstrom, Jeffrey Hansen and Scott Morehead add a final colored dot to an already well-marked map.

They’ve just finished a day of disc golf at Harrington Park in Nevada – the last stop on their Professional Disc Golfer’s Association tour.

The 72 dots on their map represent each Frisbee golf course they’ve played in Iowa since early last summer.

“We had the summer to do stuff, and we enjoyed playing [disc golf] in Ames,” said Hansen, ISU alumnus.”We decided it was free and we’d get to see a lot of small towns and cool areas.”

The group met two years ago while working on the student broadcast “1800 Seconds” and has been having a great time ever since, said Dahlstrom, graduate student in biochemistry, biophysics and molecular biology.

“We just go out to have fun,” he said. “We’re not professionals by any standard.”

The friends said they’ve driven more than 6,000 miles and spent more than $400 on gas. Their only sponsorship came from Big Daddy’s BBQ in Des Moines, who gave them $50 worth of hot sauce, Hansen said.

After playing in more than 70 locations, Dahlstrom said he knows what to look for in a course.

A good Frisbee golf course should have a variation of obstacles, elevation, distance and water traps, he said.

The group has had some interesting wilderness adventures, including ticks, poison ivy, stinging nettles, “imaginary” bees, birds, mosquitoes and leeches, Dahlstrom said.

One of Dahlstrom’s favorite memories occurred on the ninth hole at a course in Corydon, when his favorite disc got lost in a lake.

“I thought, ‘It can’t be very deep’,” he said.

Dahlstrom said he and Morehead waded into the lake “up to our knees.”

After finishing the course in Harrington Park, the group planned on celebrating their accomplishments with a Frisbee-shaped Great Plains pizza.

After a busy summer, the group’s goal for the future is to play at every new Frisbee golf course erected in Iowa, Dahlstrom said.