Zach Bitter

Professional Competitive Runner

Phoenix, Arizona


Meet Zach Bitter Ultramarathoner


Zach Bitter is a resident of Phoenix, Arizona who loves to run all types of terrain including road, track, trail, and mountain. He enjoys all distances of racing from 5K up to ultramarathons. Zach’s strengths and focus are currently with ultramarathon distances. His training regularly exceeds 100 miles per week, with workouts that include long runs, tempo runs, progression runs, fartleks, intervals, and hills. In addition, he loves to incorporate cross training activities including biking, swimming, plyometrics, core, lunges, and various strength training movements.

Zach relies on effective nutritional products from NOW and a healthy diet (see some of Zach's recipes) to keep him motivated and in top form. With over 5,000 miles logged each of the last four years, it’s absolutely vital for him to carefully monitor his diet to assure he’s receiving all the nutrients required for recovery and energy. NOW has been essential in helping him stay active and reaching his goals.

Follow Zach’s Training Log: Strava

Why I’m a NOW Ambassador

As a Field Representative for Altra Footwear, professional athlete, and coach my days are always full and varied. My day-to-day energy demands require me to seek out the most nutrient dense and bio available foods and supplements. NOW products help provide the building blocks I need to keep moving without wearing down. I turn to NOW to supply me with Vitamin D-3 & K-2 for proper calcium absorption. After long runs and races that surpass marathon distance I turn to Yucca Root, which helps curb minor acute aches and pains. When cooking I love to use NOW’s organic coconut oil for its high smoke point, which allows me to cook without damaging the healthy fats and proteins in my whole foods.


12 Hr. World Record Holder (101.7 miles)

100 Mile American Record Holder (11:40:55)

200 Kilometer (125 miles) Track American Record Holder

Sixth fastest 50 mile time by an American (5:12:36)

100k Track American Record Holder (6:58:00)

Three time USATF National Champion 50 mile (2012,2015) 100k (2014)

Daily Regimen

Post race, workout, and on recovery days