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Study Finds Vitamin D Helps Maintain Immune Health, but Does Not Improve Running Performance

Vitamin D can help runners hold onto healthy levels through the dark winter months, and may support immune markers, but this new study found it doesn’t translate into better performance like VO₂max, power, or strength.

The Mental Mistake That Can Sabotage Tough Runs, According to Sports Psychology

Hard runs hurt, but sports psychologist Mike Gross says the biggest performance threat isn’t the pain it’s the mental “second arrow” that turns discomfort into suffering. Practice curious awareness to observe sensations without spiraling into doubt.

Marathon vs Half Marathon; New Study Reveals Which Race Hits Your Heart Harder

Marathon or half marathon: new heart scans from the 2023 Silesia Marathon suggest both distances cause only small, short-lived dips in heart performance for most recreational runners, with readings returning to normal within two weeks.

On Introduces Laceless Running Shoe Made by Robots in New South Korea Factory

On Running’s new LightSpray laceless shoe uses 32 robots to spray a seamless upper in just three minutes, cutting development from 18–24 months to as little as 3–4 and hinting at a faster, more automated future for running footwear.

6 Running Memoirs That Will Change How You Think About Every Mile

A finish line is never just a finish line. These unforgettable running memoirs prove the sport is about endurance, identity, and what you learn when the miles get long, quiet, and deeply personal.

Record 240,000 Runners Apply for 2026 NYC Marathon as Lottery Results Are Announced

Hundreds of thousands entered the 2026 TCS New York City Marathon lottery, but with 240,000+ applicants and roughly 1% selected, getting to the November 1 start line became the race’s most competitive drawing ever.

Nike Sends Ultra Runner to Race a Car on Ice at Montana’s FAT Ice Race

Nike ACG brought “Man vs. Machine” to FAT Ice Race in Big Sky, pitting ultra runner Liam Meirow in prototype spiked Ultrafly shoes against a custom test vehicle on a frozen 8,000-foot track then turning the spectacle into a showcase for upcoming ACG gear.

Puma Partners With Shincell to Develop the Next Generation of Nitro Foam

Puma is teaming up with China’s Shincell New Materials to co-develop the next generation of its Nitro midsole foam, launching a joint research lab in Suzhou aimed at boosting cushioning, responsiveness, and efficiency across future performance footwear.

Kiprun and Smoon Introduce Running Shorts With Built-In Period Protection

Kiprun and Smoon’s new Run 900 shorts blend lightweight race-ready design with built-in period protection, letting runners train and compete comfortably with a three-layer absorbent brief that helps prevent leaks for up to 12 hours.

CLIF Bar Becomes Official Energy Bar of London and Berlin Marathons

CLIF Bar is going global in marathon running ahead of the 2026 season, adding new partnerships with the TCS London Marathon and BMW Berlin Marathon.