4 Actionable Steps to Optimize Your Athletic Engine, TCS London Expands, And More

Welcome to your weekly endurance briefing, courtesy of the Marathon Journal. Each Monday, we deliver essential updates and expert insights to keep you informed on the latest in running and competitive sports.

1. TCS London Marathon to expand into 2 day event

The TCS London Marathon will expand into a two-day event in 2027, marking the biggest structural change in its history. The London Marathon 2027 will take place on April 24–25, 2027, welcoming 100,000 runners across a Saturday and Sunday format for a one-off edition designed to meet record demand. Organizers say the move will dramatically increase access following more than 1.3 million ballot entries for 2026, while also creating the largest fundraising moment in UK sport. Elite and mass fields will be split across both days, with runners still taking on the iconic Greenwich-to-Westminster route — just on a completely new scale. 👉 This is a major shift in marathon racing. Full breakdown + what it means for the sport here: MarathonJournal.com

2. 4 performance lessons from a world record holder and iFit Coach Ashley Paulson. 🏃‍♀️🔬

When iFIT coach Ashley Paulson shattered the Guinness World Record at the Boston Marathon Expo by running 100 miles in 12 hours and 16 minutes, the running world stared in awe—but behind the sparkles lies a deeply logical masterclass in high-performance endurance. We pulled back the curtain with Ashley and her crew chief, Matt, to bypass the hype and bring you 4 training and fueling takeaways you can implement in your very next marathon block. From the strict discipline of abandoning pace metrics to dial in true aerobic threshold training, to the low-impact volume stacking that protects orthopedic longevity, we've broken down the exact coaching strategies behind the feat. Tap here to read the full article on MarathonJournal.com and discover 4 actionable lessons to completely optimize your athletic engine.

3. Why the Wheelchair Division is the Ultimate Masterclass in Marathon Speed

Before your starting wave even crosses the line at your next major race, an entirely separate tier of high-stakes, aerodynamic marathon physics has already taken over the course. On Episode 319 of the Marathon Running Podcast, we traveled to the world-renowned Paralympic Training Center in Nottwil, Switzerland, to sit down with the undisputed king of the sport—Marcel Hug, the "Swiss Silver Bullet." In our latest feature article, "Why the Wheelchair Division is the Ultimate Masterclass in Marathon Speed," we’re breaking down the mind-bending realities of a discipline where athletes pilot custom carbon-fiber missiles at 48 mph on the downhills, navigate tight Formula 1-style pacelines at cruising speeds, and transfer raw human power directly to the pavement without gears or chains. Head over to MarathonJournal.com to expand your endurance vocabulary, read the full editorial, and check out our deep-dive podcast interview with one of the most dominant athletes on earth!

4. Jenny Simpson Collapses at Track

Olympic bronze medalist Jenny Simpson was hospitalized last night following an on-track collapse at a track event in Raleigh, North Carolina. Initial reports from LetsRun.com and Citius Mag indicate that medical responders successfully performed CPR and restored her pulse on-site before transporting her to a local medical center. Representatives close to her camp have confirmed that while she has since regained consciousness, she remains under close medical evaluation. Marathon Journal is tracking the situation closely as the running community awaits further updates. Read the full, factual report at MarathonJournal.com.

For more deep-dives and the latest in global running news, join the community at MarathonJournal.com.Words To Run By 🏃‍♀️🏃🏽‍♂️