Burnet, TX, United States · Saturday, April 24, 2027

Fixed Distance 50 mi

Pandoras Box of Rox 50 Mile

220 days away

84 km Distance

not publishedn/a Climbing

4.2 est Grit · Challenging

Calculated from 84 km alone — the organiser has not published an elevation profile. Read 4.2 as a floor, not a verdict.

30.7582° N, 98.2284° W© OpenFreeMap © OpenMapTiles Data from OpenStreetMap

What the course asks

Time limit 15 hours 10:43 min/km average. Generous. Walkable throughout for most of the field. Climbing is unpublished, so this pace is a ceiling on the effort, not a measure of it. About average for a 50 mi. Measured against 455 races of the same distance. Cut-off calculator →

Field size ~3 Tiny. You will run alone for most of it.

DUV results for the 2026 edition (52.4mi) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.

Typical conditions, April

Daytime high 26°C

Night low 13°C

Rainfall Mostly dry

Daylight 13 h 09 m of light

Regional 2001-2020 average for April — NASA POWER, grid elevation 356 m. Not a forecast.

The Aid Station

Course-specific beta from the community

👟 gear

With trail terrain, choose a shoe with moderate cushioning for optimal performance.

By UltraHub Expert

Gear for this race

Chosen for 84 km of trail.

Trail Running Shoes84 km of trail — cushioning that is still there in the last quarter.
Race Nutrition84 km of self-supported fuelling between aid stations.
Hydration VestsFlask capacity for 84 km, without the bounce.
HeadlampsA 15 h limit puts you out there after dark.
GPS WatchesBattery life first — a 84 km day outlasts most full-GPS modes.

Brooks

Catamount 3

RunRepeat found the Brooks Catamount 3 to have a cozier upper that enhances the overall fit, though breathability and durability could be better. iRunFar noted…

★★★★★ 4.5

Salomon

Ultra Glide 4

$159.95 ★★★★★ 4.6

Spring Energy

Awesome Sauce

Real food gel with 180 calories. Rice-based with natural flavors.

$4 ★★★★★ 4.6

Nathan

VaporKrar 12L

12L race vest co-designed with ultra champion Rob Krar, with insulated bladder pocket.

$170 ★★★★★ 4.6

Petzl

NAO RL

1500-lumen reactive lighting headlamp with 15-hour runtime. Automatic brightness adjustment.

$150 ★★★★★ 4.7

COROS

APEX 2 Pro

GPS running watch with 75-hour GPS battery, topo maps, and training metrics.

$500 ★★★★★ 4.7

All gear guides →

Course Notes

4 Runden a 13,1mi Reveille Peak Ranch has some very interesting geological formations (rock domes) and a unique rippling of land that makes for an interesting running adventure.

Similar races

Other 50 mi trail ultras, closest in distance first.