Josh Kerr Just Broke a 27-Year Mile Record Nobody Thought Would Fall
Josh Kerr ran 3:42.66 at the London Diamond League to break Hicham El Guerrouj's 27-year mile world record. Inside the race, the splits, and what it means.

Los Angeles Marathon organizers are adding a heat-safety option: if race-day temperatures climb too high, runners may stop just after mile 18 and still receive a finisher medal. With forecasts rising from 12–13°C at the 7 a.m. start to 25–27°C by midday, the McCourt Foundation says the goal is preventing dangerous heat illness.

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.
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 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 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.

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 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.