From their event page: 

Join the Bicycle Coalition of Greater Philadelphia and Philly Bike Tour Co. for a free guided tour of the cherry blossoms in Fairmount Park!

As spring arrives in Philadelphia, there’s no better way to experience the beauty of the season than by bike.

We’ll ride through Fairmount Park, stopping along the way to learn about its history, all while seeing nature’s spectacular display of blooming spring blossoms at their peak.

Please note this event is Bring Your Own Bike and Helmet! If you want to rent a bicycle, you can do so here.