Unbound XL Training Plan

Unbound XL is 350 miles of Kansas limestone gravel — the world's premier ultra-distance gravel race, held in late May across the brutally exposed Flint Hills. The sharp, tire-slicing surface and ceaseless rolling terrain accumulate nearly 17,000 feet of climbing through heat, wind, thunderstorms, and darkness without meaningful aid. Riders have 36 hours to finish and must source every calorie and drop of water from gas stations that close at 10 PM. Where most gravel events test your legs, Unbound XL tests your planning, pacing, and capacity to keep pedaling through the second night when everything hurts and the finish is still 100 miles away.

Course Demands

Unbound XL punishes riders with 350 miles of sharp limestone gravel that demands constant line choice to protect tires, while the unrelenting Flint Hills rollers prevent any true recovery. Riders face a compressed 36-hour cutoff, requiring sustained riding of 20+ consecutive hours with minimal sleep — typically just a short nap or none at all. Late May Kansas delivers a full weather spectrum: searing afternoon heat, cold overnight temperatures, and the ever-present threat of severe thunderstorms and headwinds. The 75-mile gaps between viable resupply points turn nutrition planning into a high-stakes calculation; gas stations close at 10 PM, meaning precise timing determines whether you eat or suffer.

What This Plan Targets

• ✓Extended gravel-specific endurance (20–30+ continuous hours at ultra-low intensity)
• ✓Night riding and pacing through sleep deprivation in a single push
• ✓Gas-station nutrition planning and on-the-go fueling efficiency
• ✓Heat acclimatization and hydration management for spring Kansas conditions
• ✓Flat tire prevention, tire selection, and rapid roadside repair skills

What You'll Get

• →Progressive long-day block training building to 200-mile simulation rides with gas-station resupply stops
• →Night riding protocol sessions and sleep-deprivation tolerance development
• →Race-specific heat and weather preparation strategies
• →Tire and bike setup guidance for Flint Hills limestone conditions

Training Approach

Race-simulation rides of 150–200 miles planned around convenience stores every 50–60 miles; dedicated 2-hour night riding sessions with race lights and equipment; back-to-back long weekend rides (200 mi + 100 mi); practicing quick gas-station stops without leaving the saddle unnecessarily; heat-layer and weather-adaptation training for variable conditions.