Ultra Trail Calendar — Île-de-France, December 2026
The forests around Paris, such as Rambouillet, Fontainebleau and Meudon, are the capital's big trail playground: fast trails with little climbing, ideal for a first long-distance race.
1 race scheduled
Race summary
1
Races
10 – 120 km
Distance range
400 – 5,500 D+
Elevation range
Dec
Race months
Difficulty
Tips for running in Île-de-France in december
December has the shortest days: always carry a headlamp even in short races in case it runs long.
Muscle cold increases injury risk: warm up for at least 15 minutes before the start.
December charity races are perfect for group running and enjoying without competitive pressure.
Race map
Click a marker to view race details.
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Scheduled races
Essential gear for cold and dark conditions
Key gear for races in winter conditions
Buff
Buff Thermonet
Buff tubular térmico con tecnología Primaloft. Retiene el calor corporal, ultraligero y polivalente: gorro, braga, cinta. Ideal para alta montaña.
Petzl
Petzl Actik Core
Frontal recargable de 600 lúmenes con batería Core incluida. Compatible con pilas AAA. Modo rojo para preservar la visión nocturna. Ideal para ultras con tramos nocturnos.
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