Katie Whidden - GYP (Lifelong Endurance) Coaching Katie Whidden - GYP (Lifelong Endurance) 900 13th St Golden, CO 80401 (440) 759-2224 About Map About Lifelong Endurance is an athletic coaching company. We work with clients locally and worldwide, coaching them in running and triathlon to become a better version of themselves through participation in sport. What's Nearby? Distance: 5 10 15 20 25 50 mi.