Guadalix or ECODUMAD Cross: which Korona Madrid race suits you best?
The Guadalix Duathlon and ECODUMAD Cross offer two different ways to compete in KORONA Madrid 2026: road with three distances on September 6, or cross terrain and collective formats on October 31.
KORONA Madrid It is a duathlon circuit that brings together events with different distances, surfaces and forms of participation in the Community of Madrid.
Their next two dates present very different proposals. Guadalix de la Sierra It is geared towards individual road duathlon, while ECODUMAD Cross It combines running and mountain biking with individual, pairs, relay and team options.
The first decision: road or cross-country terrain
The clearest difference is in the cycling segment. Guadalix de la Sierra Duathlon It uses road bikes and offers three distances to adapt the competition volume to each athlete's preparation.
In the Olympic and middle-distance disciplines, cycling is contested without draftingRiding in the slipstream of another participant is not allowed, so individual effort management and aerodynamics become more important. Time trial bikes are also permitted.
ECODUMAD Cross It moves the competition to the natural terrain. The cycling segment is done with mountain bikes and its different formats allow you to complete the race alone or share it with other athletes.
Guadalix Duathlon: three distances and road cycling
El Guadalix de la Sierra Duathlon will be held on Sunday 6 September 2026The program includes sprint, Olympic, and middle distances.
| Distance | First race | Cycling | Second race |
|---|---|---|---|
| Middle distance | 15 km | 60 km | 7,5 km |
| Olympic | 10 km | 30 km | 5 km |
| Sprint | 5 km | 15 km | 2,5 km |
The cycling route includes the climb to Cerro de San PedroThe circuit consists of 15-kilometer laps: four in the middle distance, two in the Olympic distance, and one in the sprint distance.
The foot race will take place alongside the reservoir, on a route described by the organizers as flat and with shaded areas.
Medium distance for those seeking endurance
La middle distance It totals 82,5 kilometers across the three segments. This option requires the most specific preparation and can serve as a warm-up for triathletes facing middle- or long-distance competitions during the fall.
Olympic and sprint training to reduce volume
La Olympic distance It maintains non-drafting cycling, but reduces the total distance to 45 kilometers. This allows riders to try this type of competition without facing the length of the long distance.
El sprint It is the shortest route in Guadalix, with 5 kilometers of running, 15 of cycling and a final 2,5 kilometers on foot.
ECODUMAD Cross: individual, pairs, relays or teams
ECODUMAD Cross 2026 It will be played on Saturday 31th October 2026 in San Agustín del Guadalix. The event will close the KORONA Madrid calendar with popular, federated and Talent category competitions.
The main format will have 6 kilometers of running, 20 kilometers of mountain biking and a final 3 kilometers of running.
This distance can be completed individually, in pairs, through popular relays of two athletes, or as a team time trial.
| ECODUMAD Cross Format | Distance | How to compete |
|---|---|---|
| Individual | 6 km – 20 km – 3 km | An athlete completes all three segments. |
| Couples | 6 km – 20 km – 3 km | The two components advance together during the test. |
| Popular relays | 6 km – 20 km – 3 km | One athlete does the cycling and the other does both running races |
| Team time trial | 6 km – 20 km – 3 km | Teams made up of between four and six members |
| Individual Supersprint | 1,5 km – 7 km – 1 km | Individual format of shorter distance |
ECODUMAD Cross will also be a Spanish Cup
The day will include tests of the Spanish Duathlon Cross Cup in team time trial and relay format.
In the senior relays, four athletes will participate, and each member will complete a course of 1,5 kilometers of running, 7 kilometers of cycling and a final 1 kilometer on foot.
The cadet and junior categories will feature Talent competitions. The team time trial will have distances of 2-7-1 kilometers, while each relay participant will complete 0,5-2-0,25 kilometers.
Quick comparison between the two tests
| Appearance | Guadalix Duathlon | ECODUMAD Cross |
|---|---|---|
| Date | 6 September 2026 | 31th October 2026 |
| Location | Guadalix de la Sierra | San Agustín del Guadalix |
| Mode | Road Duathlon | Cross Duathlon |
| Bicycle | Road or time trial | Mountain bike |
| Distances | Sprint, Olympic and middle distance | 6-20-3 km and super sprint 1,5-7-1 km |
| Participation | Individual | Individual, pairs, relays and teams |
| Main profile | Resilience and individual management | Cross-country terrain and shared formats |
Which test best suits your goal?
Choose Guadalix if you're looking for distance
The September 6th event is best suited if you want to rack up kilometers, compete on a road bike, or prepare for an endurance goal during the fall.
The middle distance requires specific preparation, while the Olympic and sprint distances allow for a reduction in volume while maintaining the cycling route around the San Pedro Hill area.
Choose ECODUMAD Cross if you prefer a mountain bike
The San Agustín del Guadalix event is the most suitable option if you regularly train with a mountain bike and prefer dirt tracks to road cycling.
The individual format allows you to tackle the full duathlon, while the supersprint reduces the distance for those seeking a shorter participation.
ECODUMAD Cross offers more options for competing together
Pairs, relays and team time trials make ECODUMAD Cross the alternative with the most options to share the competition with clubmates, friends or partner.
In Guadalix, the result depends on individual performance throughout the race. In ECODUMAD Cross, various formats incorporate coordination, collective strategy, and segment allocation.
Two different ways to close KORONA Madrid 2026
The choice does not depend solely on distance. Guadalix prioritizes endurance, road cycling, and individual effort, while ECODUMAD Cross It focuses on mountain biking and a greater variety of formats.
Those who have the preparation and equipment for both modalities can use Guadalix as an end-of-summer goal and ECODUMAD Cross as a competitive closing event for the season.
Registrations, routes, prices, schedules and regulations can be found at the KORONA Madrid official website.
This content has been created with the support of AI tools and reviewed by the Triathlon News editorial team.
