While in the 5 Terre there are walking trails that connects the five villages and walking is very popular, especially on the main coastal paths, which are subject to park entrance fees. The trails vary in difficulty from an easy stroll to a rough and physically challenging hike. There are fees to use the more popular walking trails, but the less frequently traveled (and most arduous I’ve been told) are free of charge. All of the trails are relatively narrow and are usually crowded in high tourist season. In order to walk along the trails between the villages, we had to purchase a pass (5 euros nowadays), which is available at the information offices near the train stations at any of the five villages. We payed a small supplement (an extra €3) for the pass and got unlimited travel between the villages, Levanto, and La Spezia on regional trains for the duration of the pass. This is what we did with my family while there and I must say made the whole trip easy going.
The villages of the Cinque Terre were so beautiful that I only wish you could go and see it for yourself.