A few charities that I think are just great:
Slay Sarcoma. A 5K Run/Walk usually in the month of October that you can do virtually from anywhere. All proceeds go to funding research on leiomyosarcoma, a type of uterine cancer that has effected a dear friend of our family. After the 5K is over, you can still donate to the research fund.
Every Mother Counts. A woman dies every 2 minutes from complications of pregnancy and childbirth, and 98% of these deaths are preventable. You can learn more and run with EMC.
Girls On The Run. They teach life skills to girls through dynamic, interactive lessons and running games; an organization dedicated to creating a world where every girl knows and activates her limitless potential and is free to boldly pursue her dreams.
Heart Strides. They provide running shoes for moms who are taking care of children who are critically ill or have special needs, helping moms move forward.
Charity Miles. You download a free app and pick a charity. Then sponsors they work with donate money for every mile that you run, walk, or bike. How great is that!!