Marufo Vega Trail is a 14.1 mile lightly trafficked loop trail located near Big Bend National Park, TX that features beautiful wild flowers and is only recommended for very experienced adventurers. The trail is primarily used for hiking, walking, nature trips, and birding and is accessible year-round.
This is a strenuous, but spectacular day hike or overnight backpacking trip. The trail is named after Gregorio Marufo, who grazed goats along the river. Hikers today use the cross country section to join two ends of the popular desert trail making it a14-mile round-trip loop.
This might be the finest long hike in Big Bend - I'd have trouble choosing between this and South Rim. Marufo Vega winds majestically through 14 miles of desert. The trail is primitive, marked by cairns and is often rocky and uneven. Most of the path is flat, but there are several long, tiring ascents, including coming back up from the river. A grueling hike, and worth every minute. The silent, monolithic Deadhorse Mountains watch you as you walk. Across the river there are grand, towering cliffs. You are unlikely to see many people - I saw four (three were in the same group). I did this as a day hike in January. I would recommend against trying it in summer - there is no shade anywhere and people can die of heatstroke out here in the hot months.
One of the nicer, more isolated backpacking overnights you can do in Big Bend. There's a 1/2 mile side route about halfway through the loop that allows you to camp right down by the Rio Grande.