McDonald Observatory

Region · Texas

Trans-Pecos

McDonald Observatory

Best timeNov–Mar
From you
Nearest airportCNM · 126 mi
On this page

Overview

The Trans-Pecos is the part of Texas' Big Bend Country which lies west of the Pecos River. This region is part of the vast Chihuahuan Desert and contains some of the highest desert areas in the world, with all of Texas' highest peaks.

The stark, rugged terrain is very sparsely populated, with Brewster County being home to only 6,000 people in an area bigger than Rhode Island, with two-thirds of them living in Alpine. El Paso is the only sizeable city in the region. The area has a rich historical legacy left by the Spanish settlers who came to the region in the mid-17th century, as well as that of early pioneers and traders who fought off native tribal attacks until the 1880s.

The Trans-Pecos region consists of ten counties: Brewster, Culberson, El Paso, Hudspeth, Jeff Davis, Pecos, Presidio, Reeves, Val Verde County, and Terrell.

1 things to do

Updated from Wikivoyage on 1 October 2026 · Something wrong or missing? Improve it on Wikivoyage

Best things about Trans-Pecos

Wet'n'Wild Waterworld

Plan your trip

Best time to visit & weather

Most comfortable: Nov–Mar. Summer highs reach about 104°F; winter lows dip to about 36°F. Very hot (Apr, May, Jun, Jul, Aug, Sep) — plan outdoor time for mornings. Wettest: Jul and Sep. (climate data from nearby Big Bend National Park)

Jan: 0.4 in rain0.4"Jan: high 69°F, low 36°F69°36°JanFeb: 0.3 in rain0.3"Feb: high 75°F, low 42°F75°42°FebMar: 0.3 in rain0.3"Mar: high 83°F, low 48°F83°48°MarApr: 0.4 in rain0.4"Apr: high 92°F, low 57°F92°57°AprMay: 0.8 in rain0.8"May: high 100°F, low 67°F100°67°MayJun: 1.4 in rain1.4"Jun: high 104°F, low 74°F104°74°JunJul: 1.7 in rain1.7"Jul: high 102°F, low 75°F102°75°JulAug: 1.5 in rain1.5"Aug: high 102°F, low 75°F102°75°AugSep: 1.6 in rain1.6"Sep: high 96°F, low 70°F96°70°SepOct: 0.8 in rain0.8"Oct: high 89°F, low 59°F89°59°OctNov: 0.5 in rain0.5"Nov: high 78°F, low 46°F78°46°NovDec: 0.3 in rain0.3"Dec: high 69°F, low 37°F69°37°Dec

Blue bars: average daily high and low (°F). Purple columns: average monthly rain and melted snow (inches).

Getting there

  • From you: to see whether to drive or fly, and how long it takes.
  • CNM Cavern City Air Terminal, Carlsbad — 126 mi away. Directions
  • MAF Midland International Air and Space Port, Midland — 134 mi away. Directions
  • ELP El Paso International Airport, El Paso — 176 mi away (major hub). Directions

Major airports can be found at either end of the region at El Paso and Midland-Odessa.

Full “Get in” guide ↓

Sample 3-day trip

  1. Day 1: El Paso — El Paso Zoo, Fort Bliss Army Base, The University of Texas at El Paso.
  2. Day 2: Study Butte-Terlingua — Big Bend Expeditions.
  3. Day 3: Alpine — Museum of the Big Bend, Last Frontier Museum, Sul Ross State University.

Built from the best-covered destinations in this region; open each for its own day plan.

Photos

McDonald ObservatoryTrans-Pecos

Places in Trans-Pecos

Map

Every listing with a location. Tap a pin for its Google Maps link.

Understand

The Trans-Pecos was defined in 1887 by the Texas geologist Robert T. Hill, is the distinct portion of Texas that lies west of the Pecos River. The term is considered synonymous with Far West Texas. It is the most mountainous and arid portion of the state, and most of its vast area (outside the city of El Paso) is sparsely populated.

The area is known for the natural environment of the Big Bend and the gorge of the Rio Grande, part of which has been designated a National Wild and Scenic Rivers System. With the notable exceptions of Big Bend Ranch State Park, Big Bend National Park and the Guadalupe Mountains National Park, the vast majority of the Trans-Pecos region consists of privately owned ranchland.

Watch

  • Transpecos, a 2016 American thriller film about border patrol agents who encounter a Mexican drug cartel.

Cities

Brewster County

Presidio County

  • Marfa - Home of the mysterious Marfa Lights.
  • Presidio - Small historic border town which provides lodging for jaunts into the mountains.

Other counties

  • El Paso - Largest city of the region, with a uniquely Mexican culture.
  • Fort Davis
  • Fort Stockton
  • Pecos - The town that brought rodeo into the world.
  • Van Horn - Has several hotels; where I-10 splits from US-90

Other destinations

  • [http://www.tpwd.state.tx.us/spdest/findadest/parks/balmorhea/ Balmorhea State Park], north of Fort Davis. San Soloman Springs, a very large artesian well in the foothills of the Davis Mountains, offers a warm and unique place to swim or scuba dive. Camping and motel-like lodging is available.
  • Big Bend National Park
  • [https://tpwd.texas.gov/state-parks/big-bend-ranch Big Bend Ranch State Park], east of Presidio. Just west of Big Bend National park is Texas' largest state park, with over 300,000 acres (120,000 hectares) in the wilderness of the Chihuahua Desert. Horse rentals, guided jeep tours, plus rafting excursions on 23 miles (37 km) of the Rio Bravo and Rio Grande rivers. At its eastern edge is Barton Warnock Environmental Education Center, which explores the range of geology and wildlife of the Chihuahuan desert.
  • [http://www.tpwd.state.tx.us/spdest/findadest/parks/davis_mountains/ Davis Mountains State Park], near Fort Davis. Hiking, mountain biking, and horse riding on 4 miles (6,4 km) of trails in Texas' largest mountain chain. The trails connect with neighboring Fort Davis State Historic Site.
  • Hueco Tanks State Historic Site
  • Guadalupe Mountains National Park

Get in

By plane

Major airports can be found at either end of the region at El Paso and Midland-Odessa.

By car

From Mexico

Get around

With great distances between sights and even communities, a car is an absolute necessity to get around the region. Car rentals are readily available in Midland-Odessa and El Paso.

U.S. Route 90 runs east-west through the northern part of Brewster County, connecting Marfa, Alpine, Marathon and Del Rio. U.S. Route 67 passes through the northwestern part of the county, connecting Fort Stockton, Alpine and Marfa. U.S. Route 385 runs north-south through the central part of the county, connecting Fort Stockton, Marathon and Big Bend National Park.

U.S. Route 90 runs east-west through the northern part of Presidio County, connecting Van Horn, Marfa and Alpine. U.S. Route 67 runs north-south through the county, connecting Fort Stockton, Alpine, Marfa, Presidio, then crosses the U.S.-Mexico border at Ojinaga.

See

  • Historic forts built along the Chihuahua Trail and the San Antonio-El Paso road during the middle of the 1800s.
  • Spanish missions built during the 17th century Spanish colonization efforts.

Do

  • - located in Anthony

Drink

The Trans-Pecos region contains three American Viticultural Areas: the Escondido Valley AVA, the Texas Davis Mountains AVA, and a portion of the Mesilla Valley AVA, most of which is in New Mexico.

My experience

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