The 2025 Runner's World marathon calendar spans the United States, and includes everything from marathons to half marathon, and even a few 5Ks, 10Ks, and more.
Jennifer Acker reports on a wide range of health and wellness topics for Runner’s World and Bicycling. She’s passionate about delivering journalism that enriches the lives of readers. Jennifer is a lifelong runner—with several half marathons, and a few marathons under her belt, certified yoga...
There’s a reason why runDisney events have a hardcore fan-base among serious runners and Disney fans–because it’s awesome. I’ve done several past Disneyland Half Marathons around the Diamond Celebration, including the triumphant return of the race last year. (Read my2024 Disneyland Half M...
52 half marathons after open-heart surgery, 52 volunteer activities in a year, trying to give a stranger to a kidney, and so much more!
I haven’t been bothered all that much by growing older. Three-quarters of my life or more is behind me, but I still felt physically healthy and mentally alert. I’m not able to climb mountains or run marathons—or even see well at night or reliably pull words from memory—but most ...
There’s a Secret to Train Your Brain to Run Longer What’s a Good Half Marathon Time? When and How to Change (or Skip) Your Long Runs Run the Brooklyn Half With Runner’s World How to Build Your Running Base in 8 Weeks The Best Spring Half Marathons of 2025...
Jennifer Acker reports on a wide range of health and wellness topics for Runner’s World and Bicycling. She’s passionate about delivering journalism that enriches the lives of readers. Jennifer is a lifelong runner—with several half marathons, and a few marathons under her belt, certified yoga...