18 miles!!!

I DID IT! Saturday I ran 18 miles in 3 hrs and 16 minutes. I was really dead toward the end, but I made it. They say if you can run 18 you can finish a marathon. I honestly dont know where they get that rationalle.?.? Once I got done, the prospect of running 8 more miles was beyond comprehension. I run 20 this Saturday. Wish me luck!