UNBOUND Gravel

The world's premier gravel race: a self-supported 200 mile (322 km) ultra across the Flint Hills of Kansas, defined by brutal June heat, flint tyre-cuts, and long remote self-sufficiency. Distances from 25 to 350 mile.

What makes it hard

• 3000m of total climbing
• Technical terrain: Flint Hills gravel, sharp flint rock, minimal pavement, exposed prairie, mud in wet years

How BEINA trains you for it

BEINA reads the exact demands of UNBOUND Gravel — gravel, 322km, Flint Hills gravel, sharp flint rock, minimal pavement, exposed prairie, mud in wet years — and builds your plan around them. Race-day predictions and AI coaching remove the guesswork so you arrive ready.