Fjellaløpet is a September terrain race held in Indre Østfold, Norway, organized by OL Flaggtreff. The event provides 400 m, 700 m, 1.5 km, 5 km, and 10 km race options, accommodating children's races, short distances for beginners, and standard local running distances within the same program.
The course details are limited, but the specified terrain types suggest off-road running rather than a course exclusively on roads. The organizer describes it as “autumn’s most beautiful adventure.” The race resumed after a two-year hiatus because of the pandemic, continuing as part of the Fjellaløpet series.