I run with Team Lemon of Alex's Lemonade Stand Foundation, which is a charity to fight pediatric and childhood cancers (raise money for support, research, and to help the kids and their families). There are tons of benefits to running with a charity- discounted park tickets, a charity gathering at a park (usually a dinner together), free information and materials for fundraising (including a shirt) and for running- you get a nutrition advisor, a race coach, and links to training schedules. Feel free to message me if you want more info! Personally, it's given me a great deal of motivation to run!