Entry for the Pikes Peak Marathon or Ascent is done on line in March.(see below) In past years the entries have closed out in 30 minutes or less. Recently it has gotten a little easier to get in either or both races. The Ascent is around the 3rd Saturday in August and limited to 1800 runners. The Marathon is the next day and the Sunday race is limited to 800 runners. The entry fee is pretty expensive, 2010 was $105 for Ascent and $95 for the Marathon. (I can't figure out why longer race is cheaper)
I ran it in 1971,72, & 73 when both races were run the same day and barely 200 people showed up. I do not recall the entry fee, but it was pretty cheap back then & mainly Colorado runners entered but with a large group from San Francisco, CA & another large group from Arkansas & Missouri. Last year 111 runners did the double, ie ran both races. Obviously friends of Jack N who would find that childs play since you get to rest overnight after the Ascent before tackling the Marathon.
Those that are interested can check the website:
www.pikespeakmarathon.com 
