LATHROP — More than 3,100 people have paid between $45 and $75 apiece to brave obstacles ranging from mud to a truckload of smashed up pumpkins while covering more than three miles Saturday at the Dell’Osso Family Farm.

“It’s awful,” Mud on the Farm organizer Susan Dell’Osso said of the smell of hundreds of pumpkins smashed and ripped apart that rest in a pit that participants will “wade’ through.

She noted the stems were all removed before the pumpkins were smashed.

“Instead of thinking about the smell remember that pumpkins are the ingredient in a lot of beauty products,” she said.

The Mud on the Farm that starts Saturday at 8 a.m. at the home of the Dell’Osso family Pumpkin Maze just off Interstate 5 south of the San Joaquin River follows the Northern California survivor Mud Run that brought 10,000 people to Lathrop in April.

This mud challenge, though, is being run by the Dell’Osso family while the April event organizers leased the land.

Besides pumpkins along with 13 other obstacles, the event Saturday differs somewhat from the April run. There is no charge either for parking or spectators.

“We want people to be able to come out and enjoy looking at the fun,” Dell’Osso said.

Late registrants can still be accommodated. The event runs from 8 a.m.to 3 p.m. with groups taking off every 20 minutes. They can still accommodate additional competitors in groups targeted to start between noon and 3 p.m. Late registration is $75.

There will be food and other vendors as well available. The event includes a beer garden with participants 21 and over getting a free beer.