Stage 4 of the Volta a Portugal was by Alexis Guerin (Anicolor-Campicarn), the Frenchman attacking on the brutal final climb to take a conclusive victory and the overall lead with six stages to go.
Guerin made his race winning move with just over 14km of the ascent to Covihâ, quickly gapping the group of favourites, and winning by 1:44. Behind him last year's overall winner and Guerin's teammate, Artem Nych attacked a chasing group of five to take second place with third place going to Pedro Silva (Feira dos Sofás-Boavista).
