Trail du Grand Sénonais
Trail Running and Walking & Hiking covering 12 km to 100 km with up to 2,800 m D+ in Sens (Bourgogne-Franche-Comté, France)
Trail du Grand Sénonais is an endurance sporting event in Sens, Bourgogne-Franche-Comté, FR focused on Trail Running and Walking & Hiking. First held in 2018, the event is an established fixture on the endurance calendar. It is part of UTMB Index Races. Key features include Nature & Off-Road, Forest, Night Run, Relay.
The race program comprises 7 competitions, including Le Brennus (100 km, +2,800 m D+), Le Brennus Duo (100 km, +2,800 m D+), La l'Yonne (40 km, +1,100 m D+), Le Petit Sénon (20 km, +270 m D+), Les balades de la Vanne (20 km) (20 km, +270 m D+), and La Sens'as (12 km, +120 m D+) (7 competitions in total). The exact date for the next edition is currently open and will be announced by the organizer. Official race regulations, course details, and registration information are provided on the organizer's website (trail-du-grand-senonais.fr).

Event characteristics
Races & distances (7)
| Competition | Discipline | Distance | Elevation gain | Altitude range | Course type | Course & profile |
|---|---|---|---|---|---|---|
| Le Brennus | Trail Running | 100 km | +2,800 m | 64 m - 218 m | Loop course | Route & profile |
| Le Brennus Duo | Trail Running | 100 km | +2,800 m | 64 m - 218 m | Loop course | Route & profile |
| La l'Yonne | Trail Running | 40 km | +1,100 m | 72 m - 194 m | Loop course | Route & profile |
| Le Petit Sénon | Trail Running | 20 km | +270 m | 73 m - 186 m | Loop course | Route & profile |
| Les balades de la Vanne (20 km) | Walking & Hiking | 20 km | +270 m | 76 m - 189 m | Loop course | Route & profile |
| La Sens'as | Trail Running | 12 km | +120 m | 71 m - 152 m | Loop course | Route & profile |
| Les balades de la Vanne (12 km) | Walking & Hiking | 12 km | +120 m | 67 m - 117 m | Loop course | Route & profile |
Course route & map
Elevation profile & course telemetry
Altitude from 64 m to 218 m above sea level (+2,800 m D+, -2,800 m D-)
Elevation profile & course telemetry
Altitude from 64 m to 218 m above sea level (+2,800 m D+, -2,800 m D-)
Elevation profile & course telemetry
Altitude from 72 m to 194 m above sea level (+1,100 m D+, -1,100 m D-)
Elevation profile & course telemetry
Altitude from 73 m to 186 m above sea level (+270 m D+, -270 m D-)
Elevation profile & course telemetry
Altitude from 76 m to 189 m above sea level (+270 m D+, -270 m D-)
Elevation profile & course telemetry
Altitude from 71 m to 152 m above sea level (+120 m D+, -120 m D-)
Elevation profile & course telemetry
Altitude from 67 m to 117 m above sea level (+120 m D+, -120 m D-)
Frequently asked questions (FAQ)
When and where does Trail du Grand Sénonais take place?
Trail du Grand Sénonais takes place in Sens, Bourgogne-Franche-Comté, FR (start area at coordinates 48.2007° N, 3.2827° E). The exact date for the next edition is currently open and will be announced by the organizer.
What races and distances are offered at Trail du Grand Sénonais?
The race program comprises 7 competitions, including Le Brennus (100 km, +2,800 m D+), Le Brennus Duo (100 km, +2,800 m D+), La l'Yonne (40 km, +1,100 m D+), Le Petit Sénon (20 km, +270 m D+), Les balades de la Vanne (20 km) (20 km, +270 m D+), and La Sens'as (12 km, +120 m D+) (7 competitions in total). The competitions belong to Trail Running and Walking & Hiking.
What is the course layout and elevation profile for Trail du Grand Sénonais?
The main competition (Le Brennus over 100 km) is designed as a loop course featuring +2,800 m of elevation gain and -2,800 m of elevation loss, ranging between 64 m and 218 m above sea level. An interactive course map with a verified 3D GPS track, kilometer markers, and GPX download is available in the course section on this page.
Where can I find registration and official race rules for Trail du Grand Sénonais?
Official race regulations, course details, and registration information are provided on the organizer's website (trail-du-grand-senonais.fr).