Streetdoc,

Without question running a marathon is the greater challenge. The training to do a marathon is the secret to being able to pull one off. If you do the work and put in the required miles the race is very doable. The pain after racing a marathon is very real...and lasts for more than few days. After the 100 mile ride my thighs were very tired but that night I went for a 2 mile walk with my wife and the next morning did a 7 mile run. I could not have done that after running a marathon.

Thanks again to all for reading of my adventure,

Jim J