100 Miles Mors

100 Miles Mors is a 100-mile ultrarace based in Nykøbing Mors, northern Denmark, completing one full loop around the island of Mors. It has run since 2007, typically held in September when the weather is suitable for long-distance running. The course covers 160.9 km around Mors, featuring island landscapes and nature instead of repeated city laps. Pinen og Plagen organizes the race with local volunteers. The event attracts both experienced ultrarunners and those attempting the distance for the first time. Local support is significant, with over 3,000 spectators and 15 resident associations hosting route parties. The race also has a substantial online following, with thousands tracking it internationally.