Gravity of Mars noted that older regions on Mars are isostatically compensated when the younger region are usually only partially compensated. Different volcanic constructs could behave differently in terms of gravity anomalies. Large volcanoes Olympus Mons and the Tharsis Montes produce the largest positive free-air gravity anomalies in the solar system. Alba Patera, also a volcanic rise, north of the Tharsis Montes, however, produces negative Bouguer anomaly, though its extension is similar to that of Olympus Mons. And for the Elysium Mons, its center is found to have slight increase in Bouguer anomalies in an overall broad negative anomaly context in the Elysium
Olympus Mountain Running Olympus Mountain Running Since 1986, nearly every year, various initiators organize marathons in the Olympus Mountains in Greece. For these Olympus Marathons the classic distance of 42.195 kilometers provides a clue to the distance of some of the runs in the Olympus. Starting in 2010, events established that surpass the classic marathon distance. In some races, runners run over distances of 57 km, 70 km or almost 100 km. At the stations along the route, the runners are provided with drinks and snacks and mostly medical aid. They are offered water, electrolytic drinks, bananas, salty biscuits, sandwiches, chocolates and more.