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'.

Previous 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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  • June 23, 2018
    Ireland Hard as Oak 2018
    The Oaks’ Demesne, Derry-Londonderry, United Kingdom
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  • June 25, 2017
    Derry-Londonderry United Kingdom Hard as Oak 2017
    The Oaks’ Demesne, Derry-Londonderry, United Kingdom
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  • June 24, 2017
    Derry-Londonderry United Kingdom Hard as Oak 2017
    The Oaks’ Demesne, Derry-Londonderry, United Kingdom
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  • June 26, 2016
    Derry-Londonderry United Kingdom Hard as Oak 2016
    The Oaks’ Demesne, Derry-Londonderry, United Kingdom
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  • June 25, 2016
    Derry-Londonderry United Kingdom Hard as Oak 2016
    The Oaks’ Demesne, Derry-Londonderry, United Kingdom
      Learn More

Browse our calendar of upcoming mud runs mud races & obstacle races for Hard as Oak

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