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13 marathons found for Ultra marathon, Belgium. Keep the list broad first, then tighten the filters when a race looks realistic.





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Belgium
26OCT
ULTRA
Bear Trail & Grizzly 100
Belgium
October 26, 2026 OCT
Belgium
07NOV
ULTRA
6° Grand Trail des Lacs et Châteaux Winter - 66km
Belgium
November 7, 2026 NOV
Belgium
22NOV
ULTRA
Olne Spa Olne
Belgium
November 22, 2026 NOV
Belgium
29NOV
ULTRA
De Warmste Loop - The Warmest Run - 8h
Belgium
November 29, 2026 NOV
Belgium
29NOV
ULTRA
Trail de la Soupe - 57km
Belgium
November 29, 2026 NOV
Belgium
14DEC
ULTRA
Meerdaalwoud Trail
Belgium
December 14, 2026 DEC
Belgium
19DEC
ULTRA
Meerdaalwoud Trail - 50km
Belgium
December 19, 2026 DEC
Belgium
20JAN
ULTRA
Houffa Trail
Belgium
January 20, 2027 JAN
Belgium
20FEB
ULTRA
TDLS - Night Trail & Ultra Trail of Siberia
Belgium
February 20, 2027 FEB
Belgium
21MAR
ULTRA
Le Dernier Homme Debout
Belgium
March 21, 2027 MAR
Belgium
18APR
ULTRA
Trail des Cisterciens
Belgium
April 18, 2027 APR
Belgium
10MAY
ULTRA
Grand Trail Des Lacs Et Châteaux - Summer Edition
Belgium
May 10, 2027 MAY
Belgium
10MAY
ULTRA
Trail de Chimay
Belgium
May 10, 2027 MAY

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