It's only for a brief sprint or something, so it isn't that outrageous. In fact, looking at the whole thing, it really doesn't seem that bad. A higher intensity/pace than I normally ride at solo, yes, but nothing insane. Especially when you factor in the benefits of riding in a large pack (for the speed graph, that is).

Flimflam: google works well..

http://www.bikely.com/maps/bike-path...de-Short-Route
http://www.bikely.com/maps/bike-path...e-Medium-Route
http://www.bikely.com/maps/bike-path...ide-Long-Route