Wildflowers on the Tom Mays Unit Trail of the Franklin Mountains State Park in El Paso Texas. This is the only state park in Texas located in a rural setting. Head out on this 4.8-mile out-and-back trail near El Paso, Texas. Generally considered a moderately challenging route, it takes an average of 2 h 2 min to complete. This is a popular trail for hiking, mountain biking, and trail running, but you can still enjoy some solitude during quieter times of day. The trail is open year-round and is beautiful to visit anytime. Dogs are welcome but must be on a leash.