sentences:  Thirty-one of them managed to finish.The present course begins on 5th Avenue N. between Harrison and Mercer Streets in front of the Museum of Pop Culture on the eastern edge of the Seattle Center campus, follows 5th Avenue through Downtown and the International District to Interstate 90, follows I-90 across Lake Washington to Mercer Island, turns around and heads back across the Homer M. Hadley Memorial Bridge to the shoreline, follows Lake Washington Boulevard S. to Seward Park, loops Bailey Peninsula, and follows Lake Washington Boulevard S. back up the shoreline to McGilvra Boulevard E. in Madison Park.From there, the course follows E. Madison Street southwest to the southern entrance of the Washington Park Arboretum, turning north on Lake Washington Boulevard E. to E. Interlaken Boulevard.