The One Hundred Candidate Event Program is the pathway through
Which trail races are evaluated for potential inclusion in the One Hundred World Championship.
Candidate status recognises events that demonstrate strong potential to meet the standards of the Series while undergoing a formal evaluation period. It is a structured process designed to protect the integrity of the championship while supporting ambitious race organisers who share the vision of world-class trail running.
Rather than joining the Series through application alone, events enter a period of candidacy where they are assessed across areas such as safety, course design, athlete experience, operational delivery, and community engagement. This process ensures that every race within the Series reflects the same commitment to quality, responsibility, and excellence.
Candidate Events represent the next generation of races aspiring to join the global One Hundred ecosystem.
DESAFÍO CAMPANERO, URUGUAY
Desafío Campanero, Uruguay (26 April 2026)
21km, 10km
Set in Uruguay’s Lavalleja region, this trail race winds through the rugged slopes of Cerro Campanero, combining technical terrain, steep climbs and panoramic mountain views in a demanding mountain running experience.
ULTRA TRAIL AL ÁSPERO
Ultra Trail Al Áspero -(April 18–19 2026)
7km,15km, 25km, 45km
One of the Southern Hemisphere’s most technical and breathtaking races, Ultra Trail Al Áspero winds through Lutti’s wild trails, past Cascada el Velo de la Novia and Pueblo Escondido, before a relentless final ascent to Cerro Áspero’s summit.
RACE ANIMAS, URUGUAY
Race Animas, Uruguay - (16 August 2026)
21km, 10km
Taking place in Uruguay’s Sierra de las Ánimas, this challenging trail race pushes runners through steep climbs, rocky ridgelines and wild mountain terrain, delivering a raw test of endurance in one of the country’s most legendary landscapes.
VILLA SERRANA, URUGUAY
Villa serrana, Uruguay - (13 September 2026)
21km, 10km
In the scenic hills of Villa Serrana, this trail race winds through natural paths and mountain ridgelines, combining sweeping landscapes with a rewarding challenge that blends nature, endurance and community.
What is a One Hundred Candidate Event?
A Candidate Event is a trail race that has been invited into the One Hundred Candidate Event Program and is undergoing
formal evaluation for potential inclusion in the One Hundred Trail Series.
Candidate status recognises events that align with the values and standards of the Series
but are still progressing through a structured review process before any decision about full inclusion is made.
Does Candidate status mean the event is part of the One Hundred Series?
Candidate status indicates that an event is being evaluated for potential inclusion, but it is not yet a full Series event.
The designation reflects a period of assessment and collaboration between the event organiser and the One Hundred team.
Do Candidate Events contribute to World Championship ranking points ?
Yes. Candidate Events carry 50% of One Hundred World Championship ranking points,
relative to official One Hundred World Championship events.
How does an event become a Candidate Event?
Events cannot simply apply to join the Series.
Instead, races may submit an Expression of Interest, after which the One Hundred team reviews factors such as:
- The organiser’s track record
- The history and credibility of the event
- Alignment with the ethos of the Series
- Geographic and calendar fit within the global trail ecosystem
- Commitment to meeting One Hundred standards
Selected events may then receive an invitation to become a Candidate Event.
What happens during the candidacy period?
During candidacy, the event enters a structured evaluation period that typically includes:
- Alignment with One Hundred operational and safety standards
- Integration of Candidate Event branding and communication guidelines
- Event delivery and real-world assessment during race edition
- Post-event review and evaluation
This process allows the Series to understand how the race operates in practice while supporting organisers in
developing best-practice standards.
How long does Candidate status last?
Candidate status is time-bound, typically covering a single event edition or a defined evaluation period.
After the event has been delivered and reviewed, One Hundred will determine the next step for the race.
What happens after the event is assessed?
Following the evaluation process, several outcomes are possible:
- Progression to Full One Hundred Event status
- Continuation as a Candidate Event with further development
- Conclusion of candidacy if the event is not aligned with the Series
The decision considers operational standards as well as the long-term structure and balance of the Series.
What standards are Candidate Events assessed against?
Candidate Events are reviewed across several core areas that define the One Hundred experience, including:
Event Operations – planning, logistics, and race delivery
Safety & Risk Management – medical planning, emergency response, and athlete safety
Course Design & Environmental Stewardship – route integrity and sustainability
Athlete Experience – registration, race support, and post-race services
Systems & Data – timing, results, and operational reporting
Brand & Storytelling – alignment with the identity of the Series
Community & Land Partnerships – relationships with local communities and land managers
These areas ensure that events operate responsibly and deliver a consistent athlete experience across the Series.
What does the Candidate Event designation mean for participants?
For athletes, Candidate status signals that the race is part of the One Hundred
evaluation pathway and is working towards potential inclusion in the global Series.
The event continues to be organised and delivered by its local race operator while
aligning with the standards and expectations of the One Hundred Trail ecosystem.
Can an event remain a Candidate for multiple years?
In some cases, an event may continue within the Candidate Program if further development is
required or if the Series wishes to observe additional editions of the race.
Candidate status is not permanent and remains subject to ongoing evaluation.
Why does One Hundred use a Candidate Event Program?
The Candidate Program ensures that the Series grows carefully and responsibly,
maintaining consistent standards across events worldwide.
By assessing races over time rather than adding them immediately, the Series can:
- Protect the quality and credibility of the championship
- Support race organisers in strengthening their events
Ensure athletes experience the same high standards across the global calendar.
Interested in Becoming a Candidate Event?
Race organisers interested in learning more about the One Hundred Candidate Event Program can submit an Expression of Interest for consideration
