R2R EXPERTS

Your Trusted & Experienced Specialists

Meet your seasoned adventurers and trail specialists who will be sharing their knowledge on key topics to help you prepare for every aspect of the journey. From trail insights to wilderness tips and nutrition, their guidance will support and inspire you every step of the way.

Coach Arnie Fonseca Jr.

DATE: 06/30/25

TIME: 8:00 PM ET

TOPIC: Learning to Dance with the Canyon

BIOGRAPHY: Two time Double R3 Finisher Over Age 60

  • Only 60+ athlete to complete a Double R3 at the Grand Canyon—twice.

  • Exercise Physiologist, Traumatic Injury Specialist

  • Chronic Pain Recovery Specialist

  • Strength and Balance Coach

  • Taught K–6 P.E. and loved every minute of it.

  • Former competitive powerlifter with a soft spot for first-time adventurers.

Coach Arnie Fonseca Jr. is not your average coach—he’s your Grand Canyon guru and go-to guide for mastering the "Downhill Dance," getting "Bouncy," and becoming truly "Fall Proof."

With more than 40 years of experience as an Exercise Physiologist, Traumatic Injury Specialist, and Grand Canyon Training Consultant, Arnie brings a powerful mix of science, grit, and soul to every step of your Rim-to-Rim journey. He’s helped people from all walks of life, especially those 50+, build injury-proof bodies, reclaim movement, and train smart for life's boldest adventures.Whether you’re preparing for your first epic hike or seeking to level up your resilience, Coach Arnie is here to make sure you’re Canyon-ready—in body, mind, and spirit.

Follow Coach Arnie on Facebook! LINK

Meg Whitbeck, MS, RDN

DATE: 07/15/25

TIME: 8:15 PM ET

TOPIC: Performance Nutrition

BIOGRAPHY: Meg Whitbeck, MS, RDN is the co-founder of Nu, LLC and a licensed Registered Dietitian with a Bachelor of Science in Biology and a Master’s in Food and Nutrition. Since beginning her career in 2009 at Tufts Medical Center in outpatient oncology, Meg has brought her passion for nutrition education to diverse settings—from Connecticut public schools with Chartwells K12 to the college classroom as a professor at Framingham State University, where her courses earned Quality Matters certification for excellence in curriculum design. Most recently, Meg served as the founding dietitian at RVNAhealth’s Center for Exceptional Care in Ridgefield, CT, where she developed outpatient nutrition programs and built strong partnerships with healthcare providers throughout Fairfield County.