Henk Nouws September 2014
Rate 8
Positive I did walk parts of the E9 in the Netherlands, Poland and England. Some parts are stunningly beautiful, others are boring, but the best is that you walk the history of Europe and get to know so many different countries that are in the same time so closely related.
Negative Some boring stuff. The trail is not or rarely marked as E9, so you must find out the itinerary yourself (well: more a "like" than a "dislike").

Andrew November 2014
Rate 6
Positive Most of the path is located on the coast. Because I love to swim (regardless from the season) during the breaks I could go to swim in the Baltic Sea. On the E9 in polish area is one National Prak and a lot of Landscape Parks (Wysoczyzny Elbląskiej, Trójmiejski Park Krajobrazowy; Nadmorski Park Krajobrazowy, ect)