I'm literally working on a lib to solve this right now, specifically to be used with react-router. If you want I can contact you when finished and you can give it a whirl.
Implementation will look something like <TransitionGroupRoutes><CSSTransitionRoute path="..."/><CSSTransitionRoute path="..."/></TransitionGroupRoutes>
Implementation will look something like <TransitionGroupRoutes><CSSTransitionRoute path="..."/><CSSTransitionRoute path="..."/></TransitionGroupRoutes>