The Quadrathon Challenge
Inishowen, Ireland • 13-16 Aug 2026
Event overview
The Quadrathon Challenge is a multi-day running event in Inishowen, County Donegal, Ireland, held from 13 to 16 August 2026. The event runs over four days with a separate course each day, forming a combined loop of about 105 miles. Participants can choose to run or walk on one to four days.
Distances and courses
- Full Marathon (WARRIOR) - run or walk.
- Half Marathon (QUEST) - run or walk.
Courses follow coastal and hill terrain along the Wild Atlantic Way and use different routes on each day. The terrain is described as rugged and sometimes hilly. Event facilities and features listed by the organiser include catering at the finish and finisher medals.
Entry details and policies include opening and closing dates: entries open 28 August 2025 and close 28 July 2026. Entry requires online registration through the event entries system. The organiser offers an optional XCover product that may allow a refund if a participant cannot attend due to unforeseen circumstances. The event also publishes standard terms, cancellation, and refund policies. Visit the organization's website for the most recent information.