19th Bislett 24 Hour Indoor Challenge - 100mi Split

19th Bislett 24 Hour Indoor Challenge - 100mi Split is a 161 km ultramarathon in Oslo, Norway, taking place on Nov 21 – Nov 22, 2026.

Date: Nov 21 – Nov 22, 2026
Distance: 161 km
Location: Oslo, Norway
Format: Fixed distance

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