For marathon runners, 42.195 kilometers is not just a number; it's a dual contract of fitness and will. However, on the eve of the 2026 Los Angeles Marathon, set to start this week, the organizers have announced an unconventional decision: Due to hot weather, participants who choose to stop after 29 kilometers can still receive a finisher's medal. Heat warning: At the 7:00 AM start: temperatures around 10–15°C, still comfortable. Midday: as the race progresses, peak temperatures are expected to exceed about 27°C+. "We received a heat warning earlier this week and immediately began communicating to runners how to finish safely." In marathon running, once temperatures exceed 20°C, the risk of pace decline and heart-rate drift increases significantly. For recreational runners who are expected to still be on the course at midday — the hottest period — this is undoubtedly a severe physiological test. Facing the risk of heatstroke, the organizers chose not to cancel the race but instead rolled out a flexible "Plan B." If full marathon runners feel unwell during the race, experiencing "having a tough day," they can opt to finish early at around 29 kilometers. No reporting required: athletes can decide during the race whether to use this option without notifying organizers in advance. Results and medals: not a DNF, but a "29-kilometer finisher" The most contentious point concerns the recognition of medals and results. The organizers have clearly committed that runners who choose to withdraw at 29 kilometers can still be awarded a finisher's medal. This is extremely rare in traditional marathon events, where failing to complete 42.195 kilometers is usually marked as a DNF (did not finish). "We have placed a timing mat at that point. Afterward, the official results will be adjusted so these competitors' records will show as '18-mile finisher', rather than a full marathon result." Course safety upgrades: ice and mist stations form the front line In addition to the shortened-course option, the organizers have beefed up physical measures to cope with the heat: Aid stations: 19 aid stations in total, providing water and Electrolit electrolyte drinks. Cooling facilities: additional misting stations added in the second half, and the ice order has been increased. Medical resources: nine medical stations along the course, with the finish medical area equipped with extra sunscreen and medical support. This new rule has sparked polarized debate on social media. Purists argue that finisher medals should belong only to those who completed the full distance, and that shortening the distance compromises the spirit of the marathon. However, from the perspective of sports science and public health, this may be a step forward in race management. Grinding out 42 kilometers in high heat can easily lead to heatstroke or even cardiac arrest. "In the face of a heat warning, the smartest finish is the one where you can safely walk home." But in Los Angeles in 2026, for runners struggling under the blazing sun, the 29-kilometer finish line may be a braver choice than pushing all the way. #TrailRunningExplosion