NOW you tell me! I don't do as much training as I should for most races, and that on was 2 weeks before I was trying for a personal best in a road marathon. During the ramp up, my mileage was around 150 miles per month, and started a run streak (run every day, at least 2 miles) for the weeks leading up to the Ultra. Since I knew I had another race coming up soon, and my lack of training, it took me about 13 hours, the guy who won the race (and set a record) in 8 hours and change. I do think I could do the same race in under 12 hours, with a couple tweaks to my training & not getting dehydrated & sitting at aid stations for at least an hour convincing myself I could continue on.