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Built on bad decisions in Boulder, CO.

Northburn 100

4 Race EventsMarathon, 50K, 100K, 100 Mile

Cromwell, Otago, New Zealand

Course map for Northburn 100 Miler

Northburn 100 Miler

Mar 20, 2027

100 MileCrewPacers

Course map for Northburn 100km Ultra

Northburn 100km Ultra

Mar 20, 2027

100KCrewPacers

Course map for Northburn 50km Skyrun

Northburn 50km Skyrun

Mar 20, 2027

50KCrew

Northburn Trail Marathon

Mar 20, 2027

MarathonCrew