As an aside, Brian is no arm-chair coach, he lives what he preaches. Here is a sampling of his bio:
Brian Mackenzie is an expert in strength and conditioning for endurance athletes as well as the creator of CrossFit’s Run Endurance Certification. He is a Level 3 CrossFit Certified Trainer and is a Level 3 POSE Certified Running Coach.
Brian is the co-owner of CrossFit Newport Beach, and operates an internship for professional trainers. He has been a competitive Ultra Runner. He has competed in Ironman Canada along with several ultra marathons ranging from 50k to 100 miles including the Western States 100 and the Angeles Crest 100 on limited training and utilizing CrossFit as the cornerstone of his programming for not only his training, but all of his athletes.
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