Greater London, England, United Kingdom
26.3 miles (42.4 km) · 227 ft elevation gain · Loop · Race
TCS London Marathon 2026 is a 26.3-mile loop race in Greater London, England, United Kingdom, gaining 227 feet of elevation. The race follows a flat elevation profile, finishing 111 feet lower than it starts. The terrain covers 4 distinct sections with no major climbs. Nearly the entire route is runnable at a steady effort. The race opens with flat terrain and finishes with mixed terrain.
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