So I'm considering an Everesting attempt and I would really appreciate the input of Grey Stripe holders or anyone else who has also considered the crazyness. Firstly, I have chosen a hill because it is reasonably long (4km), it has decent elevation gain (315m), the road is pretty quiet (max 10 cars per hour) and it has some nice tree cover (maybe 40%). The hill has an average grade of 8% with several sections of maybe 20% on the corners. Although the road is tarred I don't own a road bike, so will be doing it on my 13kg MTB. Any training advice would also be appreciated. One concern is that I have chosen a hill too steep and I'll blow? Another concern is that although I'm quite fit for anything up to 60km, I have never done anything more than 130km, and am wandering if the 220km is doable?