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A climb of 32 m from km 16 to km 21, downhill to km 27, then flat home.
© OpenStreetMap contributors
km 3.5mile 2.2
River Plate's stadium sits beside Avenida Figueroa Alcorta, passed on the way out about 3.5 km in and again on the way back.
Photo: Dibumartinez23, CC0
km 13.1mile 8.1
The rose garden lies just off the course where it turns from Figueroa Alcorta onto Sarmiento, about 13 km in.
Photo: Fulviusbsas, Public domain
km 18.7mile 11.6
The opera house stands a block off Avenida 9 de Julio, passed on the run down to the Obelisco, about 18.7 km in.
Photo: EEJCC, CC0
km 19mile 11.8
The course comes down 9 de Julio to the Obelisco and turns onto Avenida Corrientes, about 19 km in.
Photo: Victoria Rachitzky from Sao Paulo agora, Brasil, CC BY 2.0
km 20.5mile 12.7
The route reaches Plaza de Mayo and the presidential palace from Avenida Leandro N. Alem, about 20.5 km in.
Photo: Dragan, CC BY 3.0
km 27.7mile 17.2
The southern end of the course loops through La Boca beside Boca Juniors' stadium, about 27.7 km in.
km 30.7mile 19.1
The fountain stands where the course reaches the Costanera Sur, about 30.7 km in.
Photo: Leo Wehrli (1870–1954), Public domain
km 35.4mile 22
The clock tower at Retiro is passed on Avenida Antártida Argentina, about 35.4 km in.
km 36.3mile 22.6
The old immigrants' hotel stands beside Avenida Antártida Argentina, about 36.3 km in.
km 40.9mile 25.4
The planetarium is passed on Avenida Sarmiento in the last 1.5 km, on the way back to the finish.
Photo: Luis Argerich, CC BY 2.0
Height drawn many times taller than life. Heights: GEDTM30.
Dashed: bridge
Your 5 gels, at the orange marksFor a 4:00 finish, one every 40 minutes
Get them on AmazonAmazon partner link
The 2026 race started and finished at the corner of Avenida Figueroa Alcorta and Dorrego, at 07:00 on Sunday 20 September.
Sourced
In 2026 there were ten start times. Athletes with a disability went at 06:57 and the elite at 07:00. Then came the pens: under 3 hours at 07:02, 3:01 to 3:30 at 07:03, 3:31 to 3:45 at 07:04, 3:46 to 4:00 at 07:06, 4:01 to 4:15 at 07:08, 4:16 to 4:30 at 07:09, 4:31 to 5:00 at 07:10 and over 5 hours at 07:11. The pen was printed on the bib.
Sourced
The course the organiser showed for 2026 climbs about 90 m in all. The first 14 km, out along Figueroa Alcorta and Libertador to General Paz and back past Palermo, stay below 11 m, and a short swell on Libertador at km 15 tops out at 16 m. The real rise is one stretch: from about 7 m on Avenida del Libertador at km 16, past Recoleta and along 9 de Julio to the Obelisco, to the highest point, 39.6 m, on Diagonal Norte at km 21.5.
From there the road comes back down through San Telmo to La Boca, and from km 26 to the finish it never rises above 9.5 m: Pedro de Mendoza, the Costanera Sur, Puerto Madero, Retiro and the river road back to Palermo. The lowest point, 4.2 m, is on Avenida Sarmiento by the Planetario, at km 40.8.
Measured
In 2026 hydration and refreshment points, fruit included, ran from kilometre 5 on, and again in the finish area. Runners took one bottle at the tables, and food was covered by the entry fee.
Sourced
Starts and finishes at Avenida Figueroa Alcorta and Dorrego, on an urban asphalt course certified by World Athletics.
The Maratón de Buenos Aires is a loop of 42.2 km with 90.3 m of climbing. Its lowest point is 4 m and its highest 40 m above sea level.
Entry through the organiser
Asociación Ñandú, a third party. We take no entries and have no part in the race.
Ballot openSydney, Australia
Sun 29 Aug 202742.2 kmClimb 188 m
Climb summed after smoothing the heights over 1 km. The edge is this course's height profile on one scale for every race: 250 m above its lowest point fills it. Photo: Sydney Opera House, by W. Bulach, CC BY-SA 4.0, via Wikimedia Commons.
Medellín, Colombia
Sep 202742.2 kmClimb 191 m
Climb summed after smoothing the heights over 1 km. The edge is this course's height profile on one scale for every race: 250 m above its lowest point fills it. Photo: Medellín, by Luis90f, CC BY-SA 4.0, via Wikimedia Commons.
Warsaw, Poland
Sep 202742.2 kmClimb 66 m
Climb summed after smoothing the heights over 1 km. The edge is this course's height profile on one scale for every race: 250 m above its lowest point fills it. Photo: Old Town Market Place, by Adrian Grycuk, CC BY-SA 3.0 pl, via Wikimedia Commons.
Belgrade, Serbia
Sun 18 Apr 202742.2 kmClimb 92 m
Climb summed after smoothing the heights over 1 km. The edge is this course's height profile on one scale for every race: 250 m above its lowest point fills it. Photo: Belgrade Fortress, by CrniBombarder!!!, CC BY-SA 3.0, via Wikimedia Commons.
Imagery: Google Earth3:52 filmMilan, Italy
Sun 4 Apr 202742.2 kmClimb 88 m
Climb summed after smoothing the heights over 1 km. The edge is this course's height profile on one scale for every race: 250 m above its lowest point fills it.
Tel Aviv, Israel
Fri 26 Feb 202742.2 kmClimb 87 m
Climb summed after smoothing the heights over 1 km. The edge is this course's height profile on one scale for every race: 250 m above its lowest point fills it. Photo: Jaffa, by Ariel Manor, CC BY 2.5, via Wikimedia Commons.Not entirely. It has 90.3 m of climbing over 42.2 km. The highest point is 35 m above the lowest.
Entry is through the organiser. Entry fee: US$120 (for the 2026 race). Entry details on the organiser’s site
Runners have 6 hours to finish.
8,579 runners finished in 2019.
