Marathons in December 2026

10 upcoming marathons happening worldwide in December 2026. Filter by country, exact distance, or elevation.

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10K races in DecemberHalf marathons in DecemberUltras in December

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This calendar in numbers

This calendar currently lists 10 upcoming events, from Dec 1, 2026 to Dec 19, 2026. December is the busiest month, with 10 events scheduled. Course distances range from 22 km to 42.2 km.