The COA-Clube Orientação e Aventura, in partnership with the Municipality of Abrantes, organizes on December 9, 2017 the "Trail of Abrantes 100". The "Trail Abrantes 100" event is a running and marching event, known commonly by trail It is a test to be traversed in signposted rails, aiming to cover all the in the shortest possible time. The Trail of Abrantes 100 is an event that integrates 3 variants of running / progression on foot in full nature, in semi-autonomy regime in a limited time. 1. Trail Abrantes 100: about 100km, starting and arriving in Abrantes, traveling to several parishes of the county, done individually. 2. Trail Abrantes 100/2: The same route as the Trail of Abrantes 100, made by two-way boards, where each element carries at least a 25 km course. 3. Trail Abrantes 100/4: The same route as the Trail of Abrantes 100, made by stafetas of up to 4 elements, in which each element carries out at least 25 km.