Sports
Buenos Aires Marathon: Che Fanti's Honest Race Report
An aggressive start, Boston Marathon pressure, and the grueling physical and mental battle over 26.2 miles in Argentina's capital.
In an honest race report for Girls Who Run, Marcella Fanti recounts her experience at the Buenos Aires Marathon. Chasing a Boston qualifying time, she faced an aggressive start, early fatigue, and intense pressure before crossing the finish line.
The start of a marathon carries months of built-up anticipation. At the Buenos Aires Marathon, the initial logistics went smoothly for Marcella Fanti: easy access with a short walk of about a kilometer from drop-off, a punctual start with waves released every three minutes, and an energetic atmosphere soundtracked by the Argentine national anthem. The only drawback in the pre-race setup was the long lines at the portable toilets.
The original plan called for an average pace of 4:52 min/km to finish in roughly 3:24 to 3:25. However, anxiety over the Boston Marathon qualifying cutoff times led to a last-minute strategy shift right at the starting line. Facing record applicant numbers and a tougher cutoff, Che Fanti decided to take a gamble on a faster pace, targeting a 3:22 finish with 4:48 min/km splits—an unplanned move not discussed with her coach, Nelson.
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A rushed start and early warning signs
Unlike previous races where she started conservatively to let her body warm up, in Buenos Aires the obsession with the clock surfaced in the very first kilometer. With humidity hovering near 94% and temperatures around 22°C (72°F), the heavy air quietly began taking its toll.
Through the seventh kilometer, everything felt comfortable, buoyed by audio messages from friends and cheer stations from family along the course. However, between kilometers 12 and 15, the effort needed to maintain pace grew disproportionately high. Instead of recalibrating and easing back to a 4:55–5:00 min/km pace, she pressed on, causing fatigue to mount steadily.
Hitting the wall at 30k and physical breakdown
By kilometer 19, the discomfort was undeniable. Passing the Boca Juniors stadium area around kilometer 28 demanded total concentration just to stay in motion. Up to kilometer 30, her cumulative splits yielded a personal best at that distance, but her legs levied an immediate toll right after crossing that marker.
Attempting to stabilize at a 5:10 min/km pace brought no relief to her perceived effort. Her muscles reached extreme fatigue, locking up with total stiffness and refusing to respond to normal stride mechanics. At kilometer 35, after grabbing a soda from her coach, moving forward required alternating between running and brief ten-second walks to loosen up her legs.
Mental battle to the finish line
Between kilometers 35 and 37, the urge to drop out grew overwhelming. To keep putting one foot in front of the other, Che relied on mental cues and voice messages from family, reframing the agony as a conquerable test of grit. Past kilometer 30, she abandoned the watch entirely, running purely on feel with the sole goal of finishing.
Approaching kilometer 40 brought rolling elevation changes with sharp descents and climbs. With music playing in her headphones to take the edge off the final stretch, she crossed the finish line in 3:33. Reaching the end brought overwhelming relief and an immediate physical need to sit down.
Reflections on performance and race experience
Although 3:33 is a strong finish time, the experience left a bittersweet aftertaste due to missing out on enjoying iconic landmarks like the Obelisk and the Casa Rosada. Putting excessive pressure on a specific time prevented race day from serving as a celebration of the entire training cycle.
The central takeaway from the race report is the crucial need for tactical flexibility: recognizing early on when your body isn't responding to an aggressive pace and adjusting to a sustainable gear protects physical integrity and turns 26.2 miles into a far more rewarding experience.
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