3SIX12 12-Hour
12hr MTB XC endurance race at Newnham Park, Plymouth, Devon. ~5-6km singletrack laps, daylight into dusk. Solo/pairs/singlespeed. National championship venue (2025). Lights needed for final laps.
25 July 2026Newnham Park, Plymouth, Devon5.5km/lap
Get your 3SIX12 12-Hour plan12hr MTB XC endurance race at Newnham Park, Plymouth, Devon. ~5-6km singletrack laps, daylight into dusk. Solo/pairs/singlespeed. National championship venue (2025). Lights needed for final laps.
What makes it hard
- 12 hours of continuous effort — durability over raw power
- 125m of climbing per lap adds up fast
- Technical terrain: XC singletrack, fire road, moorland
How BEINA trains you for it
BEINA reads the exact demands of 3SIX12 12-Hour — 12hr mtb, 5.5km/lap, XC singletrack, fire road, moorland — and builds your plan around them. Race-day predictions and AI coaching remove the guesswork so you arrive ready.