How do I register for the Buenos Aires Marathon?

Registration is open to all runners through the Ticketear platform. There is no lottery or qualifying standard required. Spots are available until the race reaches capacity, so register early to secure your entry.

Is the Buenos Aires Marathon a Boston qualifier?

Yes, the Buenos Aires Marathon is a Boston qualifying race. The flat course and typically cool late-September conditions make it a realistic option for runners targeting a BQ time.

What is the course like? Is it hilly?

The course is a loop through central Buenos Aires with essentially no net elevation change. It is one of the flatter big-city marathons available, which favors even pacing and time goals.

What is the weather like on race day?

Late September in Buenos Aires is mild, with average temperatures between roughly 52°F and 64°F on race day. Conditions are generally pleasant with moderate humidity, though light to moderate winds and some rain are possible.

How large is the field?

Recent editions have seen around 8,500 finishers, making it a substantial city marathon with a strong atmosphere but not an overwhelming logistical experience.

Is the course USATF certified?

The Buenos Aires Marathon is not USATF certified. It is held in Argentina and operates under its own certification framework. It is recognized as a Boston qualifier, so check directly with the BAA if certification specifics matter for your qualification.

Sun, Sep 20 · 2026Buenos AiresSince 1984

Buenos Aires Marathon

Buenos Aires delivers a loop course through one of South America's most energetic cities, in the mild coolness of late September. Whether you're chasing a PR or your first finish line, the conditions here work in your favor.

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BUENOS AIRES · AR

Buenos Aires

SUN, SEP 20

2026

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Race Overview

EST. 1984

Buenos Aires is a big-city marathon that actually delivers on the city part. The course loops through the heart of the Argentine capital in late September, when the weather is genuinely good for running. Temperatures sit in the 50s and low 60s Fahrenheit, humidity is moderate, and the city is alive. The crowd support through central Buenos Aires is real and loud in stretches, especially as the course moves through some of the denser neighborhoods. And because the course is flat, essentially no net gain from start to finish, you can actually run the race you planned. Don't waste that by going out too fast in the first 10k. The flat profile and cool temperatures make this one of the more PR-friendly options in South America, so it is worth being patient early and saving something for the back half.

This is a Boston qualifier and the flat course means that standard is genuinely reachable here if you are trained for it. Registration is open, no lottery, no qualifier required. You sign up through the Ticketear platform and your spot is yours until the race fills. It does fill, so don't sit on it once you decide. The field is a few thousand finishers, big enough to feel like an event but not overwhelming. If you want a fast race in a city that actually gives you something to look at along the way, Buenos Aires is worth the trip.

Field size

~8.6k

8,579 finishers

BQ rate

—

Boston qualifier

Time limit

6:00

Tight cutoff

Entry

Open

First-come registration

Course records

Men

2:05:02

Evans Chebet

2019

Women

2:24:52

Rodah Tanui

2022

The Course

476 ft total gain

Total ascent

↑476 ft

Total descent

↓456 ft

Net elevation

↑20 ft

Highest point

151 ft

Lowest point

13 ft

Course shape

Loop

Start and finish in one place

The Buenos Aires Marathon runs a loop course with essentially no net elevation change, making it one of the flatter marathon options in South America. The absence of significant climbing means pacing can stay consistent from start to finish, which is a genuine asset for runners targeting a PR or a Boston qualifier. The course runs through central Buenos Aires, so expect some turns as it moves through city blocks, though no single stretch punishes you with a sharp grade. Mild late-September temperatures in the low 50s to mid-60s Fahrenheit support good running conditions. Light to moderate winds are common, and because the course loops, wind exposure may shift direction mid-race. Plan for the possibility of rain.

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Race-Day Weather

10-year median

Low

52°F

High

64°F

30°MARATHON-IDEAL 45–60°80°

What to expect

September in Buenos Aires puts you at the start line in cool, jacket-worthy air that feels genuinely good for running. By the later miles it warms up, but not so much that you're managing heat. This is one of the more comfortable windows you'll find for a marathon in South America. A light throwaway layer for the corral is worth it, but once you're moving you'll be fine.

Entry

OPEN

All runners register through Ticketear platform. Registration remains open until the race reaches capacity.

Register on race site

Logistics

For runners travelling in

Closest airport

EZE

17 mi

from the start

≈ 27 min transferEasy transfer

What to expect

Most travelling runners fly into EZE, about 17 miles from the start, an easy transfer by rideshare or transit, roughly a 27-minute trip. Stay close to the start in Buenos Aires so you're not fighting race-morning closures and transit on tired legs. Arrive a day early to clear the expo and bib pickup, and build in buffer for gear-check and corral entry.