Chickasaw National Recreation Area is in southcentral Oklahoma, between Dallas, Texas and Oklahoma City, Oklahoma. Chickasaw National Recreation Area was originally authorized in 1902 as Sulphur Springs Reservation and was renamed and redesignated as Platt National Park in 1906. In 1976, Platt National Park, Arbuckle National Recreation Area, and additional lands were combined to establish Chickasaw National Recreation Area.
Great trails, easy to moderate. I have lived within an hour of these trails most of my life and had never been until Saturday after Thanksgiving. The Bromide trail and the Bison trail are both well maintained and very scenic. We made about a 3 mile loop, going to the top of Bromide hill, then looping around the Bison trail. We all like to go hike different places, but don't forget those that are close to home as they may be a great hike. The trails are well marked and there are plenty of places to stop and rest, stick your feet in the water, or climb a few rocks.
My wife and I turned back about 2 miles into the trail due to boredom. It is very well marked, but there just isn't much to see (at least in the first half). We camped at the nearby Buckhorn Campground and drove to the parking lot marked at the trail start on the map above. If you don't turn off into Trail #4 (which later merges back w/#1), you walk on a straight, dirt road for ~.5 mi before reaching the actual trailhead.
There is some tall grass at some parts (Watch for ticks.), but the trail is easy to follow. There are patches of trees occassionally, but the majority of the trail skirts the treeline by ~30m so you are exposed to direct sun. It is pretty slightly hilly, but there are no good views of Lake of the Arbuckles from the main trail; you may be able to see it from Trail #4.