Cancer Survivor Completes 100-Mile Mountain Ultramarathon

Just one year after a full hysterectomy and radiation treatment left her fearing for her life, 48-year-old mom Christina Klayko conquered one of the world's most brutal endurance races.

Her journey from "not being able to walk my dog around the block" to finishing the Western States 100 proves that the human spirit can overcome unimaginable challenges.