I have done Ragbrai eleven times, this will be my 12th and probably final ride. I alway have a goal of 1200 miles from April 1st till the beginning of Ragbrai. The reason I feel that you need at least 1000 miles is that will ensure that you can enjoy the week. I know people that only got in a few miles, yes they might complete the ride however I see pain in their face throughout the week. I get the proper amount of training in and have a great week. In regards to hills, I try to get some hill training in however where I live that is a challenge. Do the training and enjoy the ride, don’t do the training and it can be a struggle for you.