OK

Pure Hell! A network of military roads, double track, rocky very technical singletrack, smooth singletrack through some forest. Very tough climbs, both single and doubletrack. Don't bike alone. There are many trails out there, I'm not sure how many miles. I couldn't find a good map, but there may be one. Big climbs. Not for beginners. Even if you take a short loop, the climbs will test you. There are even sounds of artillery fire, and you might even see some helicopters, or other military training. I'm not sure if this place is open year round. Call Mud, Sweat, and Gears in Lawton (580-510-9224) or LETRA (580-442-5541).

Singletrack that crosses creeks and roads. Out and back, 7 miles one-way from Holson Valley Road to Talimena Scenic Drive, or another 0.5 mi to Talahina State Park. Mostly uphill one-way, down the other way. Some doubletrack. There are some sections, like creek beds, that some people will hike-a-bike. Rock outcrops and loose rock in some sections. Very taxing trail, bring water. Don''t bike alone, and sign in at the trailhead. Bugs can be bad in the summer.

This is one of the best trails in Oklahoma but if you're new to this trail it's easy to get lost, because there are few signs and the trails seem to go in every direction. Once you get familiar with the area you'll recognize the Ho Chi Mien, Lower Ho Chi Mien, the Nature trail, ridge trail, the YMCA area, etc. Awesome trails if you like technical (challenging) singletrack. Also, there is much more to the trail than I put on the map. A large network of spiders with lots of trail.