Believe it or not, this is an extremely popular event for local roller and inline skaters. Our taxi had to wait as traffic was stopped in front of us to make way for the thousands of participants to pass. It's a "Friday Night Fever" tour through Paris, skate at your pace. The route changes each week, but typically stretches for 30km (about 18 miles) Skaters meet at 10pm at the Place Raoul Dautry in the 14th arrondissement between the Montparnasse office tower and the Paris-Montparnasse train station. The entire route takes approximately 3 hours, but obviously you can leave the other 10,000-20,000 people at any time. This weekly event is supervised by police personnel. Rain can cause cancellation.