Originally Posted by lemurhouse
I think the advice given above is good. But why not consider doing it fixed? If you're riding 50 miles now you can add long rides during the next 6 weeks and back to back centuries probably not unreasonable.
Go for it. What's the worst that could happen?
Yes, I will be doing this fixed. I already have the bike and it only needs some minor alterations (the bullhorns I currently use have too much of a drop and have been effing with my upper back and wrists on longer rides, for example).