I am a cancer survivor with diabetes, osteoporosis due to my ongoing cancer treatments, and arthritis in both of my knees. I'm 61 years old.
My orthopedic doctor tells me to train in the water, and save my knees for the weekend road races. So I don't have a total mileage count (how do you count miles "run" in 6 feet of water without wearing any kind of floatation device), but I do have a total number of miles logged while running actual road or trail races:
459 miles.
My longest race was A Race for the Ages in Manchester, TN over the Labor Day weekend. The Race Director of that race was none other than the infamous Lazarus Lake, who is RD of the Barkley Marathons ("The race that eats its young"), though this ultra is nothing like the Barkley Marathons.
In that race -- and despite all the medical conditions that I have to deal with -- I managed to finish my first 100 mile race. (Thanks, Laz, for organizing a race that allows people like me a chance to do that kind of extreme mileage!)