Greater London, England, United Kingdom
26.3 miles (42.4 km) · 227 ft elevation gain · Loop · Race
The TCS London Marathon 2026 race traverses 26.3 miles through Greater London, England, United Kingdom. Elevation gain totals 227 feet, with 336 feet of descent. Elevation gain averages 18 feet per mile. About 100% of the distance is runnable terrain. The course features mostly flat terrain. The course difficulty of 0.9 puts it in the top 92.1% of challenging routes at this distance. Popular among runners preparing for distance events.
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