Asunción International Marathon: guide, history and key points of the race

Plan your race pace

La Asunción International Marathon has established itself since 2010 as one of Paraguay’s most recognizable urban races and a fixed date on the South American calendar. It was born as a city project, with the start on Asunción’s Costanera, and in just a few years it went from a sporting test to an international event with the presence of long-distance runners from several countries, strong brands, and a narrative closely tied to the Paraguayan capital.

Its great appeal lies in the combination of certified marathon, urban setting and a relatively friendly profile for those looking to run fast. The race is held in August and, according to the available references, keeps the main distance at 42.195 kilometers, with a course that draws on the historic fabric of Asunción and on an infrastructure that has placed it on the radar of runners from South America and beyond the continent.

A race born to stay on the Paraguayan calendar

The origin of the race is closely linked to a symbolic date for the country. In 2010, the Paraguay Marathon Club organized the first edition as a serious full-marathon test in the context of the preparations for the bicentennial of Paraguayan independence. What began as a sporting experiment ended up becoming a yearly reference race, backed by the Paraguayan Athletics Federation and linked to the international structure of World Athletics through the road-racing ecosystem.

That evolution explains much of its value. It is not just an event to add kilometers; it is a race that has helped project a modern image of Asunción, with the river in the background, broad avenues, stretches of classic city, and an atmosphere that blends competition with local identity. On the regional running map, that gives it a special place: it is not competing only for the stopwatch, but also for character.

The history of its winners reinforces that idea of stability. Since 2010, the list of champions has shown a mix of Paraguayan athletes and African long-distance runners who marked specific eras. Anderson Chirchir set the best known men’s time for the race in 2011, with 2:17:35, while Eunice Kirwa set the women’s record at 2:33:42 in 2012. Those marks explain the level the competition reached in its early years, when the race was still shaping its own personality.

Date, venue and context of the most recent edition

The most up-to-date references place the next confirmed edition on Sunday, August 30, 2026, with the start at the Costanera of Asunción. Added to that core are half-marathon and 10-kilometer options on some promotion platforms, although the main distance remains the marathon. In practice, the race works as a varied entry point into the same setting: a city open to the river and to sustained effort.

The location is no minor detail. The Costanera offers a broad, airy, and recognizable frontage, with cleaner logistics than other dense urban areas. For runners, that translates into a less suffocating start, a clear reading of the route, and a visual experience that changes as the city unfolds. For spectators, the setting helps explain why the race has gained importance: the environment sells the effort, but without disguising it.

Different descriptions of the race also mention a two-loop course for the marathon, something that usually makes organization simpler and makes it easier for the public to follow. In addition, it is described as having a contained elevation gain, especially compared with other Latin American urban marathons, which makes it an interesting event for seeking a steady pace. It is not a flat race like a track, but neither is it a route designed to break your legs.

Why Asunción has turned its marathon into an attractive race

The city brings much more than a name. Asunción is the capital, river port, cultural center, and administrative seat of the country. That institutional weight is reflected in the way the race fits into the urban landscape: there is an element of civic prestige, a showcase, a national identity. Running there is not just completing a course, but crossing a capital that concentrates much of Paraguayan life.

The runner finds a mix of avenues, monuments, and waterfront stretches that make the effort more manageable. The experience can evoke other marathons held in medium-sized capitals in the region, where the appeal lies not in scale but in the closeness between city and athlete. That balance between heritage and dynamism has been one of the keys to keeping the race from becoming just another date on the calendar.

The August climate also plays a role, usually placing the event in a more favorable period than the height of the southern summer. Even so, any marathon in a South American city requires careful management of heat, hydration, and starting pace. In a race like this, the atmosphere may feel friendly in the first kilometers and more demanding as the clock moves on. The asphalt does not forgive overexertion.

The course and what it usually asks of the runner

Available data point to a race starting at the Costanera and passing through historic and iconic places in the Paraguayan capital. That places the participant within a very specific narrative: you are not running in isolation, but inside a city that reveals its layers while the athlete tries to maintain a pace plan. The route is not sold as a roller coaster or an extreme course, but as an urban layout with room to compete.

The reference to the low elevation gain is important because it helps explain the kind of effort required. In a marathon like this, the difficulty is usually not in big climbs, but in the sum of small factors: temperature, humidity, pace management in the second half, and discipline at the aid stations. Flat or moderately rolling terrain usually rewards those who run with a cool head and do not get carried away by early enthusiasm.

On international registration and promotion platforms, there are also references to complementary distances such as 21.0975 kilometers and 10 kilometers, indicating an event logic open to different participation levels. That broadens the reach of the day and gives the organization a more popular dimension without weakening the main focus on the marathon. Not every city can boast an event that works both as an elite challenge and as an accessible celebration.

Records, winners and the sporting footprint of the race

The list of winners captures the variety of its recent history very well. In the men’s category, Derlys Ayala has been one of the most notable names in the Paraguayan scene, with a victory in 2024 in 2:22:58 and an earlier win in 2018 in 2:20:44. Héctor Silguero also appears as a repeated figure in recent years, with victories in 2021 and 2023, both in competitive times for the regional context.

In the women’s race, the event has also maintained its own identity. Carmen Martínez appears in several editions as a Paraguayan winner, while other local runners have taken over in recent seasons. The presence of local athletes at the top is significant because it suggests a race that matters not only for its international label, but also for the boost it gives to Paraguayan distance running.

Times serve as a thermometer, but also as an archive. The fact that the best men’s time is around 2:17 and the women’s record has gone under 2:33 speaks to an event that, at least in certain editions, gathered a notable level. A marathon is measured in kilometers, yes, but also in competitive memory. In Asunción, that memory is now more than a decade old.

Organization, registration and international presence

The race is linked to the Paraguay Marathon Club and the Paraguayan Athletics Federation, an organizational base that has given it continuity and legitimacy. In specialized listings, it also appears as a race belonging to the AIMS environment, which contributes to its reach outside the country. That connection with international networks matters because it helps place it in the global marathon circuit seeking certification, calendar presence, and visibility.

Registration references show that the race usually attracts between 1,000 and 4,999 participants, confirming its mid-sized scale. It is not a mass event like the major European capitals, but neither is it a minor one. Its intermediate size may be one of its advantages: it maintains a certain human closeness, more recognizable treatment, and logistics that are still manageable.

The international profile is also reflected in the origins of some historical winners, with athletes from Kenya, Tanzania, Brazil, Argentina, and Peru, alongside Paraguayan runners who have gained prominence over time. That mix gives the marathon an interesting reading: local competition with international aspirations, a formula many cities pursue and few manage to consolidate with stability.

Asunción as a setting for both running and scenery

Beyond the stopwatch, the race works as a sporting postcard of the city. Asunción offers museums, squares, markets, and an urban geography that blends the administrative with the popular. Places such as the House of Independence, the area around the National Pantheon of Heroes, and Mercado 4 are part of a landscape that helps explain why a marathon here is not just a course, but a way of touring the capital at a different pace.

That urban component is also evident in the relationship between the runner and the public. In cities where the marathon takes over broad avenues and central areas, crowd support becomes more visible and the race takes on an almost theatrical dimension. It is not unusual for the effort to resemble a slow choreography among buildings, barriers, short shadows, and aid stations. The city becomes a track, and the track becomes a story.

That is why the Asunción International Marathon has depended not only on its age or its champions. Its strength lies in the way it has managed to combine sport, identity, and public space. In a continent where races with history abound, not all of them manage to make the city’s name matter as much as the brand’s. Here, it does.

An event that already belongs on the big South American running map

With more than a decade of continuity, a recognizable venue, and a history of champions that blends Paraguayan and international talent, the Asunción International Marathon has earned its own place. It does not need exaggeration to defend its appeal. It has a clear August date, a route tied to the Costanera, and a city that lends itself to being traversed with heart, legs, and stopwatch.

The race sums up an idea increasingly valued in modern running: the events that survive are the ones that offer identity. Not just a number on the distance, but an atmosphere, a landscape, and a memory. Asunción has built exactly that. And that is why its marathon continues to appear in the conversations of those looking for something more than a medal at the end of the day.

In an increasingly crowded calendar, the Paraguayan race retains a rare virtue: it is understood at a glance and easily remembered. The start by the river, the city as a backdrop, the blend of elite and popular appeal, the records already set, and the continuity since 2010 form a coherent whole. It is, in essence, a marathon with its own accent.