SYLVANIA, OH (WTOL) - They started running at 10 a.m. on Sunday and won't finish until 10 a.m. on Monday.
The Olander Park 24 Hour Ultra Run is underway in Sylvania.
Most races are about speed.
This is about endurance.
You can expect the winner to cross the finish line after running roughly 120 grueling miles on the park's flat, paved one mile trail.
Runners like Emily Collins say this is all about challenging oneself.
"Just stay relaxed in the early miles and keep it up as you're going," said Emily.
Then there's the scorching heat.
Runners will stay hydrated, pace themselves during the day and make up ground at night when the sun goes down and it's cooler.
"You really have to stay focused and pay attention. Don't let the elements get you down" adds Connie Gardner.
Relay teams are participating, walkers are welcome and a tent city has been set up for anyone who needs a break or catch a snooze.
The Godfather of Toledo runners, 81-year-old Tom Falvey, doesn't expect to win but will cross the finish line.
"I enjoy running. I feel good. I've always enjoyed exercise, not drudgery. It's fun," said Tom.
And this fun run will raise $2500 for the Expressive Therapies Center.
"That will go directly to all our programs to provide free, high quality mental health care to the community," said Megan Jablongowski.
Keeping pace for a good cause while the heat is on.
That's what the 24 Hour Ultra Run is all about.