Home Event Cleasathon-Inis Oírr 2016 Event Cleasathon-Inis Oírr 2016 By Inis Oirr 10k - January 4, 2016 0 Take part in either the 5k,10k or 16k on Inis Oírr (Inishere, Inisheer) island on the 26th March 2016 and represent your favourite Irish county. These three running events range from a fairly easy 5k to an adventure 16k.