In this episode, we welcome back Bob Crowley and Tim Twietmeyer, co-founders of History Expeditions, who’ve shown us how endurance fitness can unlock incredible adventures beyond racing.

This fall, they and a team of veteran endurance athletes will bring history to life with a never-before-attempted 120-mile horseback crossing of the Sierra Nevada, retracing the Stephens-Townsend-Murphy Party’s path.

Over five days, they’ll ride from Donner Lake to Auburn, uncovering long-lost routes, reflecting on the grit of California’s pioneers, and honoring one of America’s most harrowing journeys. This isn’t just an expedition—it’s endurance sport meeting living history.

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What does it take to keep running strong from your teens into your 90s? In this fifth episode of The Aging Athlete series, Krissy Moehl co-hosts as we sit down with Jeff Browning—coach, ultrarunner, and one of the sport’s most consistent and ageless performers. Jeff shares how he has adapted his training across decades, balancing intensity with recovery to stay competitive deep into his 50s. He talks about the importance of nutrition, mindset, and smart planning as the body changes, offering practical lessons that apply at any age. His story is proof that aging doesn’t mean slowing down—it means evolving. Tune in for insights on how to adjust your training and embrace the long game on the trail.

Learn More about Bronco Billy at:

• giddyupultra.com
• Instagram
• YouTube

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In this rerun episode, we dig into the science behind what’s happening inside our bodies with registered sports dietitian Ashley Reaver. Ashley highlights five key biomarkers that endurance athletes should pay attention to—explaining why they matter, what healthy ranges look like, and what steps we can take if our numbers are off. From performance to recovery, these biomarkers influence how well we train and how resilient we are to stress and fatigue. Ashley also shares practical strategies athletes can use to optimize their nutrition and overall health. With her background as a private practice dietitian, UC Berkeley instructor, and lead nutritional scientist at InsideTracker, Ashley brings both scientific depth and real-world application. Whether you’re chasing new PRs or aiming for long-term health, this conversation offers valuable insights every runner can put into practice. Check out her private practice

Episode Sponsors:

• Janji, Use code TRAILRUNNER for 10% off
• Amazfit - T-Rex 3: Get 15% off
• JAMBAR: 20% off with code TRN20
• Liquid IV, get 20% off your first order with code TRAILRUNNER
• Get the NEW "1 > 0" running hat HERE. Limited supply