Thanks for the feedback. I'm well aware of everything you mention. My wife is very excited to go back to the Alps, but I will need to be able to walk around town a couple of days after the race and certainly don't want to end up in the hospital. Looking at results from this year's race, I'm hoping to finish in about 18 hours.

Along with ramping my weekly mileage up to 50 mpw by the spring (currently at 25), I'm planning monthly long runs building to 40+ miles. We'll see how the run next weekend goes. I may be making other training/racing plans for the Alps trip a week from now.