Colin O'Brady is the American endurance athlete who completed the first solo unsupported Antarctic crossing — 932 miles, 54 days, dragging a 375-pound sled across the continent. He held the Explorers Grand Slam record (Seven Summits plus both poles in 139 days). His work matters for cyclists not because of the equipment overlap but because of the methodology: training for multi-week ultra-endurance, mental rehearsal under load, energy availability across 6,000-calorie days, and recovery from genuinely extreme physical demands. For Roadman listeners thinking about week-long bikepacking trips or Race Across America-style efforts, his frameworks are some of the cleanest available.
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