Here is another awesome quote from Kristin Armstrong, runner and author. This TOTALLY sums up running for me.
"Although raising three children is the best adventure of all, this phase of my life is not marked by freedom—in terms of liberties and indulgences with time. But there is freedom in running. There is liberty and indulgence with time, even 30 precious minutes, if that's all the day affords. I am reminded—even if not one single thing on my calendar reflects it—that adventure is out there, always whispering to me, calling me forward." - Kristin Armstrong