Elite runner trusts his watch
Ugandan distance star Jacob Kiplimo says he uses Samsung Health data from a Galaxy Watch8 to dial training ahead of the London Marathon, showing how wearables are being used even at elite levels to tune intensity and recovery. It’s branded content, but it highlights a wider trend: wearables are increasingly central to both elite and recreational training plans (samsungmobilepress.com).
Jacob Kiplimo is one of the fastest distance runners on earth, and Samsung says he is using a Galaxy Watch8 to decide when to push and when to back off before the 2026 London Marathon. The claim comes from Samsung’s own April 10, 2026 feature, so it is marketing, but it is also a useful snapshot of how training has changed. (samsungmobilepress.com) Kiplimo is not a fringe case looking for an edge. World Athletics lists the Ugandan, born on November 14, 2000, as the men’s world road running No. 1, and London Marathon Events lists him in the 2026 elite men’s field with a marathon best of 2:02:23. (worldathletics.org) (londonmarathonevents.co.uk) He also comes into London with fresh evidence that his body is operating at a rare level. World Athletics reported that he ran 57:20 in Lisbon on March 8, 2026, lowering the men’s half marathon world record again after his 56:42 run in Barcelona on February 16, 2025. (worldathletics.org 1) (worldathletics.org 2) What a watch adds is not magic pacing advice from a cartoon coach. It is a wrist sensor that logs concrete things like heart rate, pace, sleep, and running form, then turns them into a daily read on strain and recovery. (samsungmobilepress.com 1) (samsungmobilepress.com 2) The recovery part matters because hard training only works if the body absorbs it. A 2026 review in the journal Sensors says heart rate variability, which measures tiny changes in the time between beats, is widely used as a non-invasive marker of stress and recovery in athletes. (mdpi.com) Think of heart rate variability like the difference between a car engine idling smoothly and one revving under load. When an athlete is tired, sick, or carrying too much training stress, that beat-to-beat pattern often shifts before a race result tells the same story. (mdpi.com) That is why wearables have moved from hobby gadgets to training tools. A 2024 study in the European Journal of Applied Physiology found that daily recovery in endurance athletes could be predicted from combinations of training load, sleep, heart rate variability, diet, and self-reported well-being. (springer.com) Samsung says Kiplimo uses Running Analysis on the watch to track pace, heart rate, and asymmetry, which is a left-right balance measure that can hint at fatigue or uneven mechanics. In the company’s account, he uses those numbers to adjust sessions and avoid turning every workout into a race. (samsungmobilepress.com) That last part is the real shift. Elite runners used to rely mainly on a coach’s eye, a stopwatch, and how the legs felt, and now even the best athletes are layering in overnight sleep scores, morning recovery signals, and live training data from a device that weighs a few dozen grams. (samsungmobilepress.com) (mdpi.com) The London Marathon men’s field shows why that matters. Kiplimo lines up against Sabastian Sawe, Tamirat Tola, Geoffrey Kamworor, Joshua Cheptegei, and Yomif Kejelcha, which means the difference between winning and fading can come down to tiny errors in effort and recovery over weeks, not just miles on race day. (londonmarathonevents.co.uk)
