Lake Geneva developed specifically for the lake. The design of the "Alinghi 5", the defender of the 2010 America's Cup, was influenced by those racing catamarans. The best-known event, the "Bol d'Or" (not to be confused with other events having the same name) runs from Geneva to the end of the lake and back. The Tour du Lac rowing event also takes place on Lake Geneva. Competitors row once around the entire lake, making this event, at a distance of 160 km (99 mi), the longest non-stop rowing regatta in the world. Edmund Ludlow, famous as one who had signed the death
Geneva 15.7%. Of the agricultural land, 0.3% is used for growing crops. Of the water in the municipality, 0.2% is composed of lakes and 2.9% is rivers and streams. The altitude of Geneva is , and corresponds to the altitude of the largest of the Pierres du Niton, two large rocks emerging from the lake which date from the last ice age. This rock was chosen by General Guillaume Henri Dufour as the reference point for surveying in Switzerland. The second main river of Geneva is the Arve, which flows into the Rhône just west of the city centre. Mont Blanc