Chicago is bringing the heat


Newsletter #872: Saturday, 25th July 2026


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Hey runners, in today's newsletter, it's officially in the books.

World Athletics has ratified the London marathon world records, making Sabastian Sawe's 1:59:30 the first sub-2 to ever count and confirming Tigst Assefa's 2:15:41 women-only mark.

Chicago is also shaping up to be one of the deepest marathon fields ever assembled, and self-coached Vinny Mauri lining up in only his second-ever marathon. Elsewhere, Aurélien Sanchez broke the Pacific Crest Trail record, and Sophie Woods is three weeks into a run across the Alps that has the outright FKT within reach.

And as always, we round things out with the practical stuff: 10 knee-strengthening exercises to keep you injury-free, what actually counts as a good marathon time by age and sex, and 11 reasons your heart rate spikes when you run.

Jessy Carveth

Senior News Editor, Marathon Handbook


It’s Official: Sawe’s Sub-Two And Assefa’s Record Are Now In The Books

World Athletics has ratified the marathon world records from London, making Sabastian Sawe's 1:59:30 the first sub-two ever to count and confirming Tigst Assefa's 2:15:41 women-only mark.


Aurélien Sanchez Broke the Pacific Crest Trail Record. He Spent a Night in the Hospital Getting There.

The 35-year-old Frenchman covered the 2,653-mile Pacific Crest Trail in 45 days, 20 hours, and 15 minutes, taking about 16 and a half hours off Karel Sabbe's 2023 record.


Every Sydney Marathon Runner Is About To Get A Sports Psychologist In Their Pocket

The TCS Sydney Marathon says it's the first race in the world to give every participant free AI mindset coaching, handing more than 40,000 runners a sports-psychology tool built by an Olympian for the final six weeks before race day on August 30.


Vinny Mauri, One Marathon Into His Career, Joins a Stacked Chicago Field

The self-coached 25-year-old ran the fastest U.S. marathon debut on record in April. On Oct. 11 he lines up in Chicago against nine men with faster personal bests.


10 Knee-Strengthening Exercises Every Runner Should Do to Stay Injury-Free

Build stronger quads, glutes, and stabilizers to protect your knees, boost durability, and keep your mileage climbing—without the nagging aches.


Good Marathon Time: Average by Age, Sex + Ability

We do a deep dive on marathon finishing time data so you can see how you stack up!


High Heart Rate When Running? 11 Common Causes (and How to Fix Them)

Discover the top factors that could be causing your elevated heart rate during runs and learn how to manage them for a more efficient workout.


Sophie Woods Is Three Weeks Into Crossing the Alps on Foot, and the Overall Record Is in Reach

The New Zealand-born ultrarunner, who competes as Sophie Grant, left Trieste on July 4 and is on pace to beat the fastest time recorded for the 2,000-kilometer route, a mark set by a man.


World Athletics Just Told Us How Innovative The Ultimate Championship Will Be. But Is It Really?

With two months to go, World Athletics has revealed how far it will go to make its new Budapest championship feel unlike anything in the sport.


A Nike Coach’s New Book Shares Almost the Exact Title of Mary Cain’s Nike Memoir

Four months ago, Mary Cain published the memoir she had been carrying for a decade. She called it This Is Not About Running, and the title did a lot of work.

On September 1, Nike Running’s global head coach, Chris Bennett, will publish a book called This Is About Running. This Is Not About Running.


Chicago Just Loaded Up One Of The Deepest Marathon Fields It’s Ever Had

Jacob Kiplimo and Hawi Feysa return to defend their titles on October 11, but the story of the 2026 Chicago field is its depth: six men have broken 2:04, Brigid Kosgei is back for the first time since 2019, and Sharon Lokedi makes her Chicago debut.


Inside Josh Kerr’s Mile World Record + We Interview Josh Kerr!

Josh Kerr just ran 3:42.66 to break the men's mile world record, ending Hicham El Guerrouj's 27-year hold on the mark. In this episode, Michael Doyle, Jessy Carveth, and Alex Cyr break down the race lap-by-lap and split-by-split, dig into Brooks' "Project 222" campaign behind the attempt, and debate what it means for the current golden era of middle-distance running. Then Jessy Carveth sits down with Josh Kerr himself for an exclusive interview on the race, his mindset down the final stretch, the Ingebrigtsen rivalry, and what might be next, including a possible run at the 1500m record.


Quick Sprints:

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