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20Sep2026
Athlone AC Half Marathon & 10K
Flat out-and-back through Ireland's Hidden Heartlands
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27Sep2026
Naas Town Run
Flat loop from Naas Civic Offices
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3Oct2026
Fastlane Autumn Edition
Flat, fast canal-side loops with barely any elevation
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4Oct2026
Donegal East Marathons
Fast route along the River Finn in Donegal
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4Oct2026
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14Nov2026
Clontarf Half Marathon
Take on the flattest course in Ireland for a fast PB
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31Jan2027
Dungarvan 10 Mile
Named for Olympic marathon medallist John Treacy
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Mar2027
Mallow 10 Mile
Irelands most popular 10 mile race starting at Mallow Castle
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4Apr2027
Kilmovee 10K
Billed as the flattest 10K in the west of Ireland
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Apr2027
Great Ireland Run
A scenic 10K through historic Phoenix Park in Dublin, Ireland
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May2027
Cork City Marathon
A fast, flat Boston-qualifying marathon through Cork City streets
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Sep2027
Charleville International Half-Marathon
Chase a personal best on Irelands flattest fastest half marathon
More collections in Ireland
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A confirmed date shows its day; a provisional one shows only its month, because we won't claim a day we don't have. This list is edited by RunCalendar and updated as the calendar moves. Last updated 20 September 2026.