17.10.2026Tessenderlo (Belgium)
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1 course · 42 km
1 course
42km
400 m D+
353 m D-
avg 1%
Natuurmarathon17.10.
No index
Course analysis
Natuurmarathon 42 km42 km400 m D+
46effort kmⓘ42 km on the map · feels like 46 km
- D+
- 400 m
- D−
- 353 m
- Max alt.
- 57 m
Segments
Elevation profile: Natuurmarathon 42 km
21 m — 57 m
The race
The Natuurmarathon Tessenderlo is a 42 km trail race with 400 m of positive elevation gain, organized by De Bosvrienden in Tessenderlo, Belgium. The course consists of four equivalent loops through natural areas, with relay options for two or four runners.
Where to stay
Find a place to stay near Tessenderlo for the race.
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