[ RACE.2026 ] 🇲🇽 Mexico City, Mexico
Maratón de la Ciudad de México Telcel Training Plan
30 August 2026
Mexico City sits at roughly 2,240 metres, and the marathon never lets you forget it. This is the race where sea-level fitness meets thin air - a finish in the Zocalo earned at a pace the altitude chooses for you.
What the altitude actually does
At 2,240 metres the air carries meaningfully less oxygen than at sea level, and aerobic performance drops accordingly - for unacclimatised runners, marathon pace slows by minutes, not seconds, and the deficit cannot be fought with effort. Trying to hold your sea-level pace here simply moves the collapse earlier.
The course itself runs across the city toward a finish at the Zocalo, the vast central square. Its rises would be unremarkable at sea level; at altitude, every one of them costs more than the gradient suggests. Respect for the number on the altimeter is the entire game.
How to train for it
If you live at altitude, train normally and enjoy an honest race. If you live near sea level, be realistic about what is achievable: full acclimatisation takes weeks. The practical compromises are either arriving a couple of weeks early, or arriving as late as possible and racing before your body notices - both are established strategies, and the worst plan is the middle one of arriving four or five days out, tired and unadapted.
Whatever your arrival plan, recalibrate the goal. Set pace by effort and breathing rather than by your watch, and treat the first 10K as deliberately, uncomfortably easy. The altitude collects from everyone; the finishers it treats kindly are the ones who paid up front.
Weather and what to expect on the day
Late August is rainy season, but the daily pattern usually cooperates with a morning race: cool starts around the low teens, warming toward the low twenties, with rain more likely later in the day. The altitude keeps mornings genuinely cool year-round - the thin air, not the temperature, is the opponent.
Sun at altitude is stronger than the temperature implies; protection matters even on a mild morning. Hydration arithmetic also changes up here - breathing faster and drier air costs more water than the same effort at sea level. Plan drinks by schedule, not thirst.
Which distance are you running?
Official site: www.aims-worldrunning.org/races/790.html
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