 Keizer also learned about the Mighty Mountain Megamarathon, in which a climber attempts to summit all of the Colorado 14ers in the least amount of time.The Mighty Mountain Megamarathon requires climbers to summit each peak under his or her own power and also ensures a certain amount of vertical elevation is gained for each summit.Keizer gained an interest in making an attempt to break the Mighty Mountain Megamarathon record and began planning and training for the race in 1998.