Dan Nash and Owain Zerilli
97 episodes listed below
PRESS PLAY
This podcast is all about getting sport science research out into the public domain. We cover what we do and don't know regarding all topics related to endurance running performance and, more importantly, how can we use this information to make ourselves healthier and faster runners! Your hosts are Dr Dan Osborn-Nash, 2:12 marathon runner and sport physiologist for Welsh Athletics and Welsh Triathlon, and Owain Zerilli, MSc student exploring the effects of heat on EPO release and 2:38 marathon runner
Based on 6 episodes we listened to · September 2026
Training data, coaching judgment and candid marathon-block talk meet in a precise account of how endurance performance is built.
The Physiology of Endurance Running Podcast turns training theory into decisions made under fatigue, uncertainty and race-day pressure. Dr Dan Osborn-Nash and Owain Zerilli combine detailed discussion of marathon preparation with candid accounts of sessions, recovery and…
A Garmin screen becomes a plot twist when Valencia training gets down to the rep.
Press play if you want
Short reviews from the PlayNext desk, based on the episodes we processed.
A broad aerobic zone only helps if it is split into usable chunks.
The episode treats training zones as something runners can actually use, not as a neat chart on a page. Alain and Dan move through the moderate intensity domain, LT1, and VO2 max percentages in a loose but still technically grounded way, keeping the main point in view: one label…
A practical, runner-focused look at the messy middle of threshold training.
This episode sits in the messy but useful middle of endurance running: zone three, heavy intensity, threshold, LT2, and the overlap between them.
A steady taper-week look ahead to Valencia.
A week out from Valencia, the episode settles naturally into taper-week territory: nerves, packed calendars, and the familiar temptation to second-guess every easy run.
A blunt, useful check-in on the grind of marathon prep.
Road to Valencia episode three settles into the part of marathon training where the miles start to feel real and the novelty has worn off. It stays close to the small details that matter: a rough start to the week, a slightly high heart rate, a cold morning with tights and a…
Seven weeks out, the update sits with fatigue, pace, and the relief of realizing there is still a little more time.
Road to Valencia keeps its focus on the work itself: seven weeks out, a quick mix-up that briefly made it feel like six, and the small relief of knowing there is still an extra week. It lingers on the parts runners know too well, too. Fatigue. Pace.
Taper nerves, pacing logic, and practical marathon advice that stays grounded.
Three weeks out from Valencia, this episode stays close to the work: taper nerves, race-day logic, and the small choices that protect the legs. The advice is plain enough to trust.
A practical training check-in that feels like runners thinking out loud.
Road to Valencia starts with nine weeks to go and uses Dan's Cardiff Half result as the main bit of proof that the training is landing, even after a few rough races.
A grounded look at coaching where small gains, practical judgment, and usable data matter.
The episode keeps its focus on David Chalfin and the coaching work that sits just below the pro level, which gives the discussion a useful, practical shape.
Trail running, told from inside race week.
Seven weeks from Valencia, the hosts start by arguing over how many weeks are actually left.
The Physiology of Endurance Running Podcast’s "Road to Valencia 2025 - 2 weeks to go" follows Jen, Dave, and the squad through a heavy taper week that still reached 105.5 miles.
The Physiology of Endurance Running Podcast episode "The Do's and Don'ts of Session Design" is framed around how Awain and Dan build training weeks, from easy runs to threshold and VO2 max work.
Callum Hawkins explains why he moved to the marathon after seeing the Olympic standard drop from 2:12 to 2:14, then debuted in Frankfurt in 2:12 before running 2:08 in London.
The Physiology of Endurance Running podcast episode "Running myths...
The Physiology of Endurance Running Podcast uses "Road to Valencia 2025 - 8 weeks to go" to track Jenny Long through a wedding week, a 102-mile week, and a 17.7-mile hilly run over the Purbecks.
The Physiology of Endurance Running Podcast talks with Cardiff Met PhD student Elliot Jenkins about his published study on five weeks of hot water immersion in endurance runners.
Dr.
Awain and Dan speak with Phil Richardson, the creator of MeteoPace, an app that turns weather data and race elevation into pacing advice for events like the Seville Marathon.
Dan Nash says he went into the Seville Marathon expecting anywhere from 212 to 216, after six days with no running and a perineal tendon issue that came from a hard training block.
Road to Valencia - five weeks to go brings Owain, Jen, and guest Dave Long together for a relaxed taper-week catch-up.
Dr.
The Physiology of Endurance Running Podcast defines severe intensity domain training as zone 4 and zone 5, above threshold up to VO2 max.
Trail running is presented as harder to model than a flat marathon because terrain, gradient, and fatigue change the demands far more than a road race.
Hosts Dan and Owain interview elite runner Jake Smith about his comeback from RED-S and stress fractures, delving into his training, fueling, and mental journey.
The hosts and guest Jen review their training weeks 11 weeks out from the Valencia Marathon, covering high-mileage sessions, lactate testing, and illness management.
The Physiology of Endurance Running Podcast uses this Zone 2 episode to separate the science of intensity domains from the loose way runners and influencers use the term.
The hosts discuss their marathon training progress 10 weeks before Valencia, covering weekly logs, a new supplement with scientific evidence, training zone strategies, and challenges like treadmill accidents and nutrition issues.
The episode opens tired.
The crew checks in four weeks before Valencia.
The panel is one week from Valencia and deep in taper nerves.
The hosts dig into zone three, or the heavy-intensity lane, and admit up front that the naming and numbering are not exactly neat.
The team starts in the car park and walks down to the start in the dark, trying to make sense of how strange and unreal it all feels.
The episode starts six weeks before Valencia with Jen and Dan comparing where they are in the marathon build.
The show brings on David Chalfin.
Bonus: Training Talk opens the show’s new training-talk series.
Dan and Jen open the Road to Valencia training block recap in full training-log mode.
The Physiology of Endurance Running Podcast uses “Road to Valencia 2025 - 3 weeks to go” to track how Jen, Owen, Dan, and Dave are handling the final training block before Valencia.
The Physiology of Endurance Running Podcast episode “Beyond VO2max - The extreme domain” defines sprint interval training as work where task failure arrives before VO2max, then compares it with moderate, heavy, and severe intensity domains.
Hosts discuss Easter eggs and upcoming 50k race, introducing a conversation about losing pace in endurance events.
This episode explains the physiological mechanisms of fatigue during a marathon and how to address them through training and interventions.
Hosts and a guest introduce a series following their marathon training, focusing on the physiology and psychology of preparation.
Hosts discuss a recent 5k race performance and the physical sensations experienced during the run.
Hosts discuss their upcoming 5k race, recent training sessions, and feeling ready for a fast time.
Hosts discuss upcoming races, gear, and tapering while introducing a guest expert in endurance running physiology.
Hosts introduce a guest performance nutritionist to discuss nutrition for endurance runners, from elite to beginners.
This episode dives into the physiology of improving lactate thresholds for endurance running, building on previous discussions about VO2 max.
This episode discusses how to optimize training to improve VO2 max for endurance runners, based on sport science research.
This episode discusses how to pace a marathon for optimal performance, including the benefits of negative splitting and practical strategies.