Ages 16-18 may participate only with a guardian declaration; otherwise 18+. Aid stations at 2.5km and the summit; the course is marked with ribbons/paint/signs and staying on course is mandatory. Mandatory gear: visible bib and trail shoes; recommended windproof jacket and poles; pacers/external support not allowed. After finishing at the summit, runners return on foot to Gerakas village; contact info@eosx.gr.