A proper mountain-bike marathon in the Arizona high country, not a gravel race. The 50 Proof strings 80km and nearly 2,000m of climbing through the rocky backcountry around Prescott, on real singletrack that punishes the wrong bike.
The 50 Proof covers roughly 80km with about 1,980m of climbing, run late April around Prescott, Arizona. Expect long dirt-road ascents and rocky, technical singletrack descents at 1,600 to 2,000m altitude, with shorter 30 and 15 Proof options alongside.
Highs around 24°C and lows around 7°C, but it has dropped to -3°C. Rain on 6% of days. Pack for the cold end, not the average.
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.



