Camping is available on a first come first serve basis at:

Vigilante Campground - approx. 7 miles from the York Fire Station at the very end of York Road
https://www.recreation.gov/recreationalAreaDetails.do?contractCode=NRSO&parkId=241895&facilityId=241895,

or at,
Devil's Elbow Campground, 1/2 mile before York Bridge and also approx. 7 miles to the start line at the York Fire station.
https://www.recreation.gov/camping/devils-elbow-recreation-area/r/campgroundDetails.do?contractCode=NRSO&parkId=157640