Running from California to New York at 10 km/h: A Theoretical Calculation

The straight-line distance between California and New York is roughly 4,500 km (2,800 miles). At a constant 10 km/h (a brisk jog), non-stop running would take 450 hours—18.75 days. Realistically, factoring rest, sleep, terrain, weather, and nutrition, a supported transcontinental run averages 40–60 days (e.g., 40–50 miles/day). No continuous road connects the coasts solely for runners; route planning across highways, trails, and private land is a massive logistical challenge.