Janet Christiansen graduated from Cornell University in 1983 with a B.S. in Biochemistry. She started a doctoral program in Pharmacology at Cornell and began competing in sanctioned bike races, culminating in a tenth-place finish in the 1988 National Road Race. After leaving her doctoral program and moving to California in 1989, she began competing in Ironman triathlons, then ultra-endurance cycling. Her competitive cycling career culminated in two Race Across America solo finishers, and her last event was in 2015. Somewhere along the way, she settled into software engineering until retiring in May 2020. Her latest passion is sport climbing, but she continues riding recreationally on San Diego's rugged inland roads.