Maratón de Rosario

Registration Open
Rosario, Argentina
Jun 28, 2026 at 8:00 AM

The Lowdown

The Maratón de Rosario is Argentina's national marathon championship race, held each June on the banks of the Paraná River in the birthplace of the Argentine flag. Known locally as the 42K Rosario, the flat Pampas course starts and finishes at the iconic Monumento a la Bandera — a colossal national flag memorial that towers over the city's waterfront — and winds through the tree-lined Boulevard Oroño and the expansive Parque Independencia before tracing sections of the scenic Costanera riverside promenade. Held over Flag Day weekend, the race draws competitive Argentine runners alongside recreational participants in what has become one of the country's most prestigious road races. The championship status elevates the competition significantly, with national title contenders pushing the pace at the front. June in Rosario means mid-winter conditions — crisp mornings around 5-14°C — which are excellent for marathon racing on this pancake-flat course through Argentina's third-largest city. With approximately 2,700 runners and passionate local spectators, the atmosphere is intimate but spirited. A medical certificate dated within 30 days of race day is mandatory for all participants, as is standard for Argentine road races. Rosario's excellent steak restaurants, affordable hotels, and riverside cultural scene make it a rewarding destination.

Race Day

Weather Forecast

❄️
winter
cold

Elevation

Terrain Profile

⛰️

Relatively flat course

Participants

Field Size

👥
2,700RUNNERS

Medium-sized race

Crowd Rating

Spectator Support

👏
6/ 10

Good crowd energy

Rosario Named Host of Argentine National Marathon Championship 2026

Dec 1, 2025

42K Rosario will serve as the Campeonato Nacional de Maraton 2026, making it a championship-level event.

Boston Qualifier

This race is a certified Boston Marathon qualifying event. Achieve your qualifying standard here on a verified course.

Course Highlights
1

Monumento a la Bandera - Start and finish at Rosario's iconic National Flag Memorial

2

Boulevard Orono - Tree-lined boulevard through the heart of the city

3

Parque Independencia - Large urban park along the course

4

Costanera del Parana - Scenic riverside promenade along the Parana River

Race Weekend

Other distances available during the event weekend:

10K (6.2 miles / 10 km)
Destination

Rosario, Argentina

AR

Est. Hotel Cost
$40/ night

Average rate for 3-star accommodations near the start line

Minimum Age
18years
Time Limit
6 hours

Eligibility

  • Must be 18 years or older on race day
  • Must present valid medical certificate

Required Documents

  • Valid photo ID (DNI for Argentines, passport for foreigners)
  • Medical certificate of fitness (apto medico) dated within 30 days of race day
  • Signed waiver of liability

Entry Methods

  • Online Registration via 42krosario.com.ar

Cancellation & Refund Policy

No refunds after registration

Transfers to other runners not permitted

Campeonato Nacional de Maraton 2026

AIMS certified course

Flat course through the city of Rosario

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Community

Stories, tips, and race-day snapshots from runners who have tackled this course.

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