A rider dressed as Paul Revere eased his horse up to the Boston Marathon finish line and proclaimed, “The runners are coming.

Having scorched through 5km in 15:25, Kristiansen passed 10km in 32:52 – 2:18:30 pace for a marathon. Joan Benoit’s world ...

These were the curved, self-powered treadmills I had heard about—models include the Woodway Curve Trainer, Trueform Runner, and Technogym SkillMill. I climbed aboard. Because this type of ...