DateExpected
Late April 2027
Based on past editions. We'll confirm when the organiser announces.
Venue
Reveille Peak Ranch, Burnet, Texas
Burnet, Burnet County
Countdown
April
A marathon built from two laps of the same 13.1-mile loop. The second pass is where you find out how well you paced the first.
Key facts
01Course closes at 22:00
02Mass start, so expect a busy first stretch of trail
Create a free training plan for the Pandora's Box of Rox 42 km
7-day free trial, no card required
The course
One lap, on repeat
Burnet · one lap
Distance42km
Start · finishOne lap · elevation
0 kmDrag map to rotate16.6 km
Weather
Late-April, Burnet
28°CTypical high
14°CTypical low
3°CColdest in 20 years
31%Days with rain
Highs around 28°C and lows around 14°C, but it has dropped to 3°C. Rain on 31% of days.
NASA POWER data, 2006-2025, the week either side of race day
Results
Course verified. Results not yet available.
Organiser
Training
Training for the Pandora's Box of Rox 42 km
We don't do generic plans. We combine deep knowledge of this race's demands with your recent training, then build a plan with you that progresses as you do.
Beina integrates directly with your existing tools to understand your current fitness, and synchronise your planned sessions.
Intervals.icuWhat a Pandora's Box of Rox 42 km plan targets
Typical sessions
42 km
Time on feet and fatigue resistance
Fuelling and pacing for the whole event
What your weeks look like
Typical sessions
Long runs that build time on your feet
Tempo and threshold sessions to hold race pace
Back-to-back weekend runs for fatigue resistance
Not a generic schedule
Typical sessions
Built from your current fitness and the time you actually have
Adapts every week as Beina learns how you respond
Syncs your sessions straight to Garmin and Wahoo
One clear next session, never a wall of spreadsheet
Entries open now
Get your Pandora's Box of Rox 42 km plan.
7-day free trial, no card required.
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