Chilean Record in Viña del Mar Half Marathon with Carlos Martín Díaz

A 1:02:11 is not just a number on a results sheet: it's a statement. That's exactly what Carlos Martín Díaz did on October 4th on the streets of Viña del Mar, running the fastest half marathon in the history of Chilean athletics. He was joined on the podium by Juan Manuel Quijada and Matías Andrés Silva, in a race that also brought together more than twelve thousand runners across marathon, half marathon, and 10K distances. If you're passionate about running, this matters to you because it marks a before and after for South American competitive level, and because behind that time there's training logistics, pacing, and physiology that we can all learn to apply.

The Context

The Viña del Mar half marathon is one of the most traditional events on the Chilean calendar, an event that combines popular massiveness (thousands of recreational runners) with serious competitive depth, where the best national marks have been refined year after year. That a national record falls in a race of these characteristics—not at a world major, but at home, with the support of the local crowd—carries enormous symbolic value: it demonstrates that the development of middle and long distance running in Chile is maturing, with athletes capable of breaking barriers that once seemed reserved for runners from Kenya, Ethiopia, or Europe.

Running 21.097 km in 1:02:11 means averaging something like 2:57 min/km for just over an hour. It's a pace that demands refined running economy, elite aerobic capacity, and above all, perfect tactical execution: there's no margin for pacing errors in a distance where the final third punishes any excess of ambition at the start without mercy.

What the Science Says

Times like Díaz's aren't explained by talent alone. Scientific evidence on elite middle distance running agrees on several key points:

Pacing is everything. Studies on pace variability in marathon and half-marathon running show that the most successful runners—men and women—tend to distribute effort more evenly, avoiding overly aggressive starts that generate a pronounced pace drop in the final stretch (Cuk et al., 2024; Nikolaidis et al., 2019). A national record is almost always also a lesson in tactical execution, not just physical endurance.

Fatigue is manageable, up to a point. Research on fatigue development in self-paced exercise indicates that perception of effort and the ability to tolerate it are trainable: elite athletes don't feel less pain, but they manage better the relationship between perceived effort and sustained pace (Azevedo et al., 2021).

Strength sustains running economy. A recent and highly relevant finding: strength training improves the "durability" of running economy, that is, the ability to maintain efficient technique even when the body is already fatigued, plus it improves performance in high-intensity efforts under fatigue (Zanini et al., 2025). This is key in the final stretch of a half-marathon run at full effort.

Carbohydrate nutrition also counts. For efforts lasting more than an hour at intensities near threshold, carbohydrate supplementation strategies—before and during the race—remain a well-documented performance lever in elite endurance runners (Cao et al., 2025).

What It Means for You

You don't need to run 2:57 per kilometer to apply these lessons:

• Practice your pacing in specific workouts. Simulate your target race pace on long stretches, so that on race day your body "recognizes" that effort and you don't get swept up in the euphoria of the start.
• Add strength to your weekly routine. Two strength sessions (squats, glute bridge, basic plyometrics) won't steal your speed: they'll help you sustain it when you start to fatigue.
• Train your nutrition, don't improvise it. If your race lasts more than 60-75 minutes, practice with gels or carbohydrate drinks on your long runs, so you know exactly what your stomach tolerates on race day.
• Build tolerance to perceived effort. Include repeats or tempo runs where you have to sustain an uncomfortable pace for several minutes: that's where the mental toughness is built that separates a good result from a historic one.

Carlos Martín Díaz's record is a reminder that elite running and recreational running share the same principles. The difference is in the dosage, not the formula.

References

• Cuk I, Markovic S, Weiss K. "Running Variability in Marathon-Evaluation of the Pacing Variables." Medicina (Kaunas), 2024. https://pubmed.ncbi.nlm.nih.gov/38399506/
• Nikolaidis PT, Ćuk I, Knechtle B. "Pacing of Women and Men in Half-Marathon and Marathon Races." Medicina (Kaunas), 2019. https://pubmed.ncbi.nlm.nih.gov/30646638/
• Azevedo RA, Silva-Cavalcante MD, Lima-Silva AE. "Fatigue development and perceived response during self-paced endurance exercise: state-of-the-art review." Eur J Appl Physiol, 2021. https://pubmed.ncbi.nlm.nih.gov/33389141/
• Zanini M, Folland JP, Wu H. "Strength Training Improves Running Economy Durability