I'm not a runner. Obviously, I'm not adverse to exercise since I ride my bike regularly, but cycling is about wind and speed. Not pain. It's the pain (lungs, heart, legs) that I feel after running down the block that reminds me why I'm not a runner.
But both of my daughters ran in the Twin Cities Marathon last week. I followed the route on my bike and cheered them on (full disclosure: I only rode 23.4 miles). Since I'm not a runner I don't know what it's like to complete a marathon, but even watching the grueling event from the sidelines made me feel introspective and metaphorical: