About
Who writes this site
Endurance Fueling is a small publication. No team of writers, no content-mill back end, no sponsors. Two people write it, both based in North Texas.
Marcus Redd
Head Coach · USATF-certified · Coaching since 2019
Marcus coaches amateur endurance athletes out of a small group training program he started in 2019. He has run nine marathons (personal best 2:54), two 50-milers, and one 100K. He is USATF-certified and writes the majority of articles on this site. He does not have a degree in nutrition or physiology — his fueling protocols are practical distillations of peer-reviewed literature combined with what has worked (and broken) for the runners he coaches.
Marcus writes the marathon, ultra, training-nutrition, and recovery articles on the site. He does not accept paid promotion or affiliate arrangements. When a product is recommended (including any app), it is because he uses it with runners he coaches, and the recommendation is noted with the alternatives he also considered.
What he does not have
Marcus does not hold a degree in nutrition, dietetics, or physiology. He is not a registered dietitian. The site is written in the voice of a coach summarising research, not a clinician giving medical advice. Anything here is educational; for individual medical decisions, consult a registered dietitian or physician.
Contact
Sara Klein
Contributor · 2x Ironman finisher
Sara has completed two full-distance Ironman races and writes about triathlon nutrition for Endurance Fueling. She focuses on the awkward realities of multisport fueling — GI distress on the run after a hard bike leg, salt balance in long-course racing, and how to plan special-needs bags. She is not a registered dietitian; her writing is based on practical triathlon experience and published literature.
Sara writes the triathlon-specific content: the triathlon fueling calculator explainer, the race-day fueling guide, and any multisport-flavored articles. Like Marcus, she is not a registered dietitian; her writing is a mix of practitioner experience and published literature, not a clinical guide.