Trail della Diga
Running along the trails of Mongrando between the Bosco del Vallino and the dam
About Trail della Diga
A celebration of running on the Biellese trails
The Trail della Diga is one of the most anticipated events in the running calendar of Mongrando, a small town in the province of Biella, in the heart of Piedmont. Organized by the La Vetta Running sports association, the event attracts hundreds of runners and walkers every spring, who gather to run along the paths of the picturesque Bosco del Vallino, treating participants to a spectacular view of the dam that gives the race its name.
Three routes for every level
The Trail della Diga is designed to welcome athletes of all levels, from expert trail runners to families. The event offers three distances:
- 32 km competitive (approx. 900 m elevation gain): the main route, technical and demanding, aimed at well-trained runners;
- 15 km competitive (approx. 450 m elevation gain): an intermediate distance, technical yet accessible;
- 8 km non-competitive: a participatory format dedicated to walkers, youth, and families.
Starts and finishes are located at the Centro Polivalente of Mongrando, the logistics hub for the day.
Sport, territory, and conviviality
The Trail della Diga is more than just a competition: it is a true village festival that involves the entire community of Mongrando. The day concludes with the unmissable Pasta Party, a social moment that is a central element of the event, accompanied by a rich race pack and refreshment points along all routes. The start area also hosts an exhibition space featuring technical products and local sports organizations.
Rooted in the territory
The event promotes the natural heritage of the Biella area and actively involves local families and schools, with a focus on promoting outdoor sports and discovering local trails. Approved by FIDAL Piedmont, the race has established itself as one of the reference trail events in the province of Biella, growing with each edition while maintaining the amateur and convivial spirit of its origins.
Trail della Diga — edition 2026
The 9th edition of the Trail della Diga was held on Sunday, May 10, 2026, in Mongrando (BI), with over 250 registered participants distributed across the three routes. The race confirmed its format: 32 km competitive with approx. 900 m elevation gain (start at 8:30 AM), 15 km competitive with approx. 450 m elevation gain (9:30 AM), and 8 km non-competitive for families and walkers (10:30 AM).
The announced bad weather did not discourage the participants: between mud and water-swollen streams, the athletes tackled the trails of the Bosco del Vallino with smiles and satisfaction at the finish line.
The winners
- 32 km men's: Simone Terragnolo (Trail Running Valsessera), 2h36'19"
- 32 km women's: Agnese Valz Gen (Vetta Running), 2h58'55"
- 15 km men's: Francesco Nicola (ASD Climb Runners), 1h02'44"
- 15 km women's: Margherita De Giuli (ASD Climb Runners), 1h14'46"
To close the day, the unmissable Pasta Party and the awards ceremony. Race approved by FIDAL Piedmont (no. 157/trail/2026).
Programme Trail della Diga 2026
Race program:
- 7:00 AM — registration opening and bib collection at the Centro Polivalente
- 8:30 AM — start of 32 km competitive (900 m D+)
- 9:30 AM — start of 15 km competitive (450 m D+)
- 10:30 AM — start of 8 km non-competitive (families, youth, walkers)
- Following — refreshments, Pasta Party, and awards ceremony
Highlights Trail della Diga 2026
- Over 250 registered across the three routes
- Routes on the trails of the Bosco del Vallino with a view of the dam
- Victories of Simone Terragnolo and Agnese Valz Gen in the 32 km
- Final Pasta Party and race pack for all participants
Prices Trail della Diga 2026
Practical information — Trail della Diga
Where
Start and finish at the Centro Polivalente of Mongrando (BI), Piedmont. The route winds along the trails of the Bosco del Vallino.
How to get there
By car: Mongrando can be reached from the A4/A5 motorway, taking the exit towards Biella and following signs for the Elvo Valley. By train: Biella San Paolo station, then local bus connection to Mongrando.
Registration
Online registration via dedicated portals (iRunning) by the days preceding the race; registration is also possible on the day of the event at the Centro Polivalente starting from 7:00 AM. For information: [email protected], tel. +39 334 8993788.
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Where does it take place — Trail della Diga
Centro Polivalente di Mongrando