hi there,
If you're interested in Oklahoma hiking trails through mountains and challenging terrain, head to the Ouachita National Recreation Trail.
The 223-mile-long trail starts at the Talimena State Park and extends all the way to Pinnacle Mountain Park, which is located just west of Little Rock,
Arkansas.
Hiking on Ouachita National Recreation Trail will take you across the Ouachita Mountains where elevations range from 650 to just over 2600 feet.
Hope this helps
Vacationbuddy