There are also several stores outside the park in Study Butte. In the park, gas is only available at Rio Grande Village and Panther Junction. Gas is also available in Study Butte, Lajitas, and at the Stillwell Ranch. At the Panther Junction Service Station or at Study Butte. At Rio Grande Village store, but be sure you check ahead of time - they do not always have someone available who is licensed to dispense propane.
Propane is also available in Study Butte.
No horses are available in the park. You can bring your own horses to the park, but you must obtain a backcountry use permit and certain restrictions apply. Stables in Study Butte, Lajitas, and south of Marathon offer guided horse trips outside of the park. Several companies offer guided river trips ranging from one-half day to one week. Because river levels and conditions vary, check current conditions before planning your own trip.