Hard as Oak obstacle races, mud run, and OCR information, distance, cost, dates, calendar, discounts, obstacles, reviews, and more

HaO is Ireland's hardest 10km obstacle course challenge and we are proud to be supporting a great charity ‘Children in Crossfire'.

Upcoming Hard as Oak Events

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  • Race discount More info
  • June 22, 2019
    Londonderry Ireland Hard as OAK 2019
    The Oaks’ Demesne, Derry-Londonderry, United Kingdom
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Browse our calendar of previous mud runs, mud races & obstacle races for Hard as Oak

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