The coastal village of Marathopolis (also known by the locals as Marathos) is 5.5 kilometres from Gargaliani, 11 kilometres from Filiatra and 27 kilometres from Pylos. The establishment of the village goes back to the year 1859, according to a decree of the then King Othon, after the competent Minister of Internal Affairs’ recommendation.
Marathopoli is the port of Gargaliani, and during the summer months, it is a holiday attraction with rooms for rent, hotels and campsites. The coastal promenade with fish taverns, cafes, and the romantic sunset gives the village a unique colour.
In the village, visitors can see the temple of the Transfiguration of the Savior and the nearby Isle of Proti (which acts as a natural breakwater), two nautical miles from the port of Marathos. The beaches of Lagouvardos, Ai-Giannakis, Vromoneri and Golden Coast (also known as "Mati") are close to the village.
At a distance of 2 kilometres from Marathopoli is the port of Dialiskari, where, during the 1920s-1930s, significant ancient findings from the historical and mainly Roman times came to light. Among the findings are mosaic floors, tombs, tanks, marble columns, remains of buildings and fortifications, and various inscriptions. These findings were enough to identify the port of Dialiskari with ancient Erana.
Every year, many cultural and religious events take place in Marathopolis. More specifically, on the evening of Good Friday, after the Deposition ceremony, the Epitaph's procession arrives at the village's little port, where it is placed in a boat, circumambulating the coast. Also, on August 6th, the festival of the Transfiguration of the Savior takes place, as well as the festival for the celebration of the Dormition of the Virgin on August 15th. Finally, in August, the "Sardine Festival" takes place where local delicacies, fried sardines and traditional oregano bread are offered.