When approaching Alverca, keep an eye out for the Air Museum on your right-hand side. A stamp can be gotten there, and the pedestrian bridge over the tracks (west) is the one you will need to cross into town.
Follow the arrows and Fatima signs and to the N1. It is a busy road but with wide berms.
NOTE: The expectation is that you walk on the left side of the road, against oncoming traffic. For this reason, the arrows are more abundant and easier to see from the left side of the road. Keep an eye out for them on traffic and electric posts.