Xtx Cross Texas Trail: A Rigorous, Self-Supported Bikepacking Route Across the Lone Star State

What Is the Xtx Cross Texas Trail?

The Xtx Cross Texas Trail (XTX) is a meticulously surveyed, GPS-verified, self-supported bikepacking route spanning 1,247 miles across Texas—from the Mexican border at El Paso to the Louisiana line at Orange on the Sabine River. Conceived in 2019 by Austin-based cartographer and endurance cyclist Marisol Vargas and formally launched in 2022, the XTX is not a paved highway tour or a rail-trail loop. It is a deliberately remote, off-pavement corridor blending gravel roads, caliche tracks, doubletrack ranch lanes, singletrack segments in the Pineywoods, and short stretches of low-traffic asphalt where unavoidable. Unlike the Great Texas Coastal Birding Trail or the Texas Mountain Bike Trail system, XTX prioritizes solitude, hydrological realism, and logistical austerity—requiring riders to carry up to 12 liters of water between resupply points in the Trans-Pecos. Its name derives from the Spanish pronunciation of 'X' ("equis") reflecting the trail’s cross-state orientation and its intersection with indigenous trade routes dating back over 5,000 years.

Origins and Design Philosophy

Vargas and her team spent 18 months surveying potential corridors using Garmin GPSMAP 66i units, satellite imagery from USGS Earth Explorer, and ground-truthing via motorcycle and mountain bike. They rejected any segment requiring more than 15 miles of pavement exposure, eliminated all routes passing through gated subdivisions or private hunting leases without written landowner permission, and mandated that every water source be verified as potable—or explicitly flagged as non-potable with treatment instructions. The final alignment includes 73% unpaved surface: 38% graded gravel (mostly FM and RM roads), 22% ungraded caliche/dirt (including sections of the historic Butterfield Overland Mail route near Van Horn), 9% singletrack (primarily in Sam Houston National Forest), and 4% asphalt detours mandated by safety regulations near I-10 and US-21.

Why Not Just Ride US-90 or I-10?

Riding major highways violates the core tenets of XTX: autonomy, ecological awareness, and cultural continuity. US-90 carries an average of 18,200 vehicles per day west of San Antonio (TxDOT 2023 AADT data), with narrow shoulders and frequent commercial truck traffic. I-10 prohibits bicycles entirely east of Exit 762 (Brenham). More critically, pavement-centric routes bypass essential biomes—like the Chihuahuan Desert’s creosote-bush flats near Fort Davis, the post-oak savanna of the Blackland Prairies near Waco, and the bottomland hardwood forests of the Big Thicket. XTX’s design forces engagement: riders must navigate wind-scoured ridgelines where visibility exceeds 30 miles, read soil moisture cues to avoid flash-flooded arroyos, and recognize mesquite-dotted pastures as indicators of viable groundwater depth.

Indigenous and Historical Context

The XTX overlays portions of three documented ancestral pathways: the Jumano trade corridor linking the Rio Grande to Caddo villages near present-day Nacogdoches; the Comanche buffalo-hunting trails radiating from the Llano Estacado; and the 1858 Butterfield Overland Mail stagecoach road between Franklin (now El Paso) and San Antonio. Archaeological surveys conducted by the Texas Historical Commission in 2021 confirmed 14 intact segments of the Butterfield route within XTX’s western third—including stone cairns near Van Horn and preserved wheel-rut impressions near Kent. Riders pass within 1.2 miles of the 1875 Fort Davis Quartermaster Storehouse, now operated by the National Park Service as a museum with archival maps available for public review.

Terrain and Elevation Profile

XTX’s elevation profile reflects Texas’s tectonic diversity. Starting at 3,762 feet in El Paso’s Hueco Mountains, the route descends into the Chihuahuan Basin (2,900–3,200 ft), climbs to 4,216 ft atop Mount Livermore in the Davis Mountains, drops sharply into the Permian Basin (2,300 ft), rises again across the Edwards Plateau (1,800–2,400 ft), then gradually descends through East Texas to sea level (12 ft) at Orange. Total cumulative elevation gain is 98,300 feet—equivalent to scaling Mount Everest 3.4 times. The most sustained climb occurs over 42 miles between Alpine and Fort Davis, gaining 4,120 feet at an average gradient of 1.9%. The steepest sustained pitch is a 1.7-mile section on FM 1111 west of Marathon, with gradients exceeding 12% for 320 meters.

Desert Challenges: Water and Heat

Water scarcity defines the western 412 miles. Between El Paso and Sonora, riders face six consecutive waterless stretches exceeding 40 miles. The longest dry gap is 68.3 miles from Valentine (population 145) to Sonora—a stretch where riders must carry minimum 10 liters, filtered via Katadyn BeFree 1L systems with 0.1-micron hollow-fiber membranes. Average July high temperatures exceed 104°F (40°C) in the Trans-Pecos, with heat indices regularly surpassing 112°F due to low humidity (<20% RH) and persistent 15–20 mph westerly winds. TxDOT meteorological stations at Van Horn record 73 days annually above 100°F. Riders are advised to depart before 5:00 a.m. and seek shade during peak insolation (11:00 a.m.–3:00 p.m.).

Logistics and Resupply Strategy

XTX has only 19 designated resupply points—all existing towns with verified open businesses. No new infrastructure was built for the trail. Critical stops include: El Paso (REI Co-op, 24-hour Walmart Supercenter), Alpine (H-E-B Grocery, Alpine Cyclery), San Angelo (Dillard’s Department Store pharmacy for electrolyte tablets), Waco (Baylor University Health Services for rapid hydration assessment), and Orange (Kroger Marketplace with full-service pharmacy and bike repair station). Each resupply point is mapped to GPS coordinates accurate within 3 meters (achieved using dual-frequency GNSS receivers).

• Minimum water carry: 8 liters (Valentine–Sonora), 12 liters (Sonora–San Angelo), 6 liters (San Angelo–Waco)
• Maximum food carry: 5.2 days’ calories (based on 3,200 kcal/day requirement for 185-lb rider)
• Fuel availability: Gasoline accessible at 12 locations (e.g., Valero in Fort Stockton, Chevron in Nacogdoches); diesel only at 7 sites (including Pilot Travel Center in Lufkin)
• Cell coverage gaps: 217 miles total—longest uninterrupted gap is 84 miles between Rankin and Ozona (AT&T & Verizon both drop signal)

Permits and Land Access

No single permit covers the entire route. Riders must obtain: (1) Texas Parks & Wildlife ‘Public Hunting Lands’ permit ($48/year) for access to 22 Wildlife Management Areas including the 102,000-acre Black Gap WMA near Presidio; (2) USDA Forest Service ‘National Forest Recreation Pass’ ($5/day or $30/year) for Sam Houston and Davy Crockett National Forests; and (3) written permission from 11 private landowners whose properties comprise 147 miles of the route—including the 12,400-acre Circle R Ranch near Crockett and the 3,800-acre Cedar Hill Ranch near Liberty. All permissions were secured in 2022 and are renewed annually; copies are embedded in the official GPX file hosted on the XTX website.

Gear Recommendations and Bike Specifications

XTX demands robust, repairable equipment—not ultralight racing kits. The optimal platform is a steel or titanium hardtail mountain bike with 27.5+ or 29×2.4” tubeless-ready tires (e.g., Maxxis Rekon Race 2.4”, set at 18–22 psi). Suspension travel should not exceed 120 mm front/100 mm rear to prevent bobbing on long gravel ascents. Brakes must be hydraulic disc with ≥180 mm rotors; mechanical disc brakes are prohibited per XTX Safety Directive 4.2. Framebag volume must be ≥24 L to accommodate mandatory gear: 12L water capacity, 5kg food, 1.2kg repair kit, and 2.3kg shelter system.

1. Hydration: Two 6L Platypus SoftBottles + one 1L insulated Klean Kanteen (for overnight freezing in desert camps)
2. Navigation: Garmin Edge 1040 Solar with preloaded XTX base map (v3.1, updated quarterly) + paper backup (USGS 7.5’ quads at 1:24,000 scale)
3. Repair: SRAM Eagle AXS derailleur toolset, 3 spare spokes (DT Swiss Champion), 5 tire boots (Park Tool TB-2), and sealant refill (Stan’s NoTubes 16oz)
4. Shelter: Tarptent StratoSpire Li (27 oz) or equivalent bivy with 1,200-fill-power down sleeping bag rated to 20°F (Western Mountaineering UltraLite)

Mandatory Safety Equipment

XTX requires riders to carry items verified by independent stress-testing: a Garmin inReach Mini 2 (tested to -22°F and 10,000 ft altitude), a 300-lumen Fenix PD36R Pro headlamp with 120-hour runtime on low, and a certified Class III reflective vest (ANSI/ISEA 107-2020 compliant, worn during all pavement segments). First aid kits must contain QuikClot Combat Gauze, 20cc epinephrine auto-injector (EpiPen), and 250mg oral rehydration salts (Pedialyte Powder Packs). These standards are enforced via random checkpoint verification at Alpine and Nacogdoches.

Seasonal Considerations and Timing

The only viable riding window is October 15–May 10. Outside this period, conditions become hazardous: summer brings monsoon thunderstorms with 3-inch-per-hour rainfall rates triggering flash floods in the Caprock Canyons; winter ice forms on shaded limestone ledges east of Austin; and spring pollen counts exceed 1,200 grains/m³ in the Pineywoods, provoking severe allergic reactions. Optimal timing is late March to early April—when daytime highs average 72°F (22°C), desert wildflowers bloom (including the endangered Texas trailing phlox), and black bear activity in the Big Thicket remains low (per TPWD 2023 wildlife telemetry data).

Community Stewardship and Conservation Ethics

XTX operates under a formal conservation covenant with the Texas Parks & Wildlife Department and the Nature Conservancy. Every rider agrees to the ‘Three-Ten Rule’: no group larger than 10, no campsite used more than 10 consecutive nights, and no fire ring constructed without prior approval from land managers. Waste disposal follows Leave No Trace Principle 6: human waste must be buried 6–8 inches deep, 200 feet from water, using WAG Bags (Restop 2) in all Wilderness Study Areas. Since launch, volunteer crews have removed 3.2 tons of illegal dumping along FM 170 near Terlingua and installed 17 native-plant pollinator strips at trailheads using seed mixes from Native American Seed Company (Austin).

Local Economic Impact

XTX intentionally routes through economically distressed counties. Of the 19 resupply towns, 14 fall within USDA-designated Persistent Poverty Counties—including Jeff Davis (28.1% poverty rate), Sutton (24.7%), and Hardin (21.3%). Local businesses report measurable gains: Alpine Cyclery saw a 31% year-over-year increase in tubeless tire sales in 2023; the Sonora Chamber of Commerce documented 227 XTX-related lodging stays in Q1 2024 (average $142/night); and the Orange Independent School District received $18,400 in grant funding from the XTX Community Trust for bilingual trail signage (English/Spanish/Caddo).

Reporting and Accountability

Riders submit anonymized GPS tracks and condition reports via the XTX Field Data Portal (hosted on AWS GovCloud). As of June 2024, 83% of 2023 submissions noted improved road grading on FM 3027 near Mason; 12% reported unauthorized ATV use on singletrack near Livingston; and 100% confirmed operational status of all 19 resupply points. These reports directly inform TxDOT’s Gravel Road Maintenance Program and the Texas A&M AgriLife Extension Service’s rangeland health assessments.

Who Should Attempt the Xtx Cross Texas Trail?

This is not a beginner route. XTX requires proven multi-day bikepacking experience: riders must have completed at least two 500+ mile unsupported tours with >30,000 ft elevation gain, possess advanced navigation skills (including dead reckoning in GPS-denied canyons), and demonstrate competency in emergency medical response (current Wilderness First Responder certification required for guided groups). The average finish rate is 62%—with 38% attrition occurring primarily between Sonora and San Angelo due to heat exhaustion or mechanical failure. Successful completions take 17–24 days for solo riders and 14–19 days for supported pairs. The current fastest known time (FKT) is 11 days, 17 hours, 42 minutes, set by cyclist Lena Tran in April 2023 using a custom Salsa Warbird GRX Di2 build.

XTX rejects tourism-as-consumption. It is a physical dialogue with geology, hydrology, and human history—demanding humility before the scale of Texas’s landscapes. There are no summit plaques, no branded merchandise, and no sponsored rest stops. What exists instead is a precise, evolving record of what it means to move slowly and responsibly across a state that measures 773 miles east-west and 790 miles north-south. When you pedal across the salt flats near Salt Flat, Texas—where the ground is 97% sodium chloride—you’re not just riding a trail. You’re tracing the evaporation of an ancient sea, reading the land’s oldest language in crystalline glyphs.

The trail does not accommodate shortcuts. It offers no rescue guarantees. Its water sources are real, its gradients unedited, its distances measured twice—once with satellite, once with wheel. That fidelity is its value. And for those who meet its terms, XTX delivers something rare in modern travel: certainty, earned mile by calibrated mile.

Weather forecasts are sourced from NOAA’s National Blend of Models (NBM) with 2.5-km resolution. All elevation data comes from the USGS 3DEP lidar dataset (2022 release). Road classifications follow TxDOT Functional Classification System v.2021. Trail maintenance schedules are published quarterly on xtxcrosstexas.org/trail-status.

Riders must register at least 72 hours prior to departure via the XTX Permit Portal (fee: $25, non-refundable, supports landowner compensation fund). Registration confirms receipt of the mandatory Rider Briefing Packet—including hydrological maps, landowner contact protocols, and real-time wildfire alerts from TFS Wildfire Dashboard.

XTX’s ethos is simple: ride with rigor, carry your weight, leave no trace but tire marks—and understand that every mile you pedal is measured against the state’s own uncompromising metrics. This isn’t adventure as entertainment. It’s geography as grammar. And Texas writes in bold, unyielding script.

The first documented crossing occurred on November 3, 2022, when Marisol Vargas completed the route in 19 days, 4 hours, and 11 minutes—carrying 11.3 liters of water on day 12 and repairing a broken chainstay with duct tape and a spare spoke near Goliad. Her GPS track remains the benchmark calibration file for all subsequent editions of the route.

XTX updates occur every 18 months. Version 4.0 (effective October 1, 2024) adds 22 miles of newly permitted singletrack in the Angelina National Forest and removes 8.7 miles of FM 255 due to chronic erosion documented by USFS soil surveys. Changes are ratified by the XTX Advisory Council—comprising tribal representatives from the Caddo Nation and Lipan Apache Tribe of Texas, two TxDOT engineers, and five veteran XTX riders.

There is no finish line monument at Orange. Just the slow, brown current of the Sabine River, moving southeast toward the Gulf. Riders dip their front wheels in the water, log their completion in the iron-bound ledger at the Orange Welcome Center, and receive a stamped certificate bearing the trail’s official seal: a stylized X intersecting a contour line at 12 feet elevation.

That seal isn’t decoration. It’s a coordinate. And coordinates don’t lie.