Serious runners are invited to take the Outlaw 100 challenge, featuring five 20-mile loops through Robbers State Cave Park in Wilburton.

Run in the footsteps of well-known outlaws like Jesse James, Belle Star and the Youngers while racing through scenic bluffs overlooking three large lakes, rock formations and caves.

Carefully navigate forested, technical terrain with an abundance of rocks and roots while embarking on a half-marathon, marathon, 50-mile run, 5K or full Outlaw 100 course.

Website: https://outlaw100.com/home/

Register here: https://ultrasignup.com/register.aspx?did=92771

Phone: 918-465-2254