http://www.big-dogs.org/umw/UMCA24/UC24Reprt.aspx
http://onlineraceresults.com/race/vi...p?race_id=2551

According to the results of the above race, I can do 242.48 miles in 24 hours.


I have also done slightly more (274.6 miles in 24 hours) as a part of another longer event in 2002.