Photo: Frank Vincentz · CC BY-SA 3.0 · Wikimedia CommonsTrail RunningUTMB Index Races
Trail des Châtaignes
Cormeilles-en-Parisis, France
November 14, 2026 to November 15, 2026Date confirmed
48 km32 km16 km14 km+1
Nature & Off-RoadMountain+4
FRDepartment & Local Running Guide
Running Calendar Races in Val d'Oise: Local Races & Courses
42 verified events (27 confirmed dates) and 182 races in Races in Val d'Oise with course maps and elevation profiles.
Events4227 confirmed dates
Competitions182Races & courses
Distances0.5 - 162 kmCourse distance range
Max. Elevation Gain+4,900 m D+Course elevation profile
Selected Events
Featured Events & Highlights
Photo: Frank Vincentz · CC BY-SA 3.0 · Wikimedia Commons
Photo: King Februarius · CC0 1.0 · Wikimedia CommonsBike & Run
RUN & BIKE TRIAXION CERGY
Cergy, France
November 22, 2026Date confirmed
18 km7 km
City RunNature & Off-Road+3
Photo: Daniel VILLAFRUELA · CC BY-SA 4.0 · Wikimedia CommonsTrail RunningUTMB Index Races
Trail Les 40 Bosses
Saint-Leu-la-Forêt, France
December 5, 2026 to December 6, 2026Date confirmed
120 km75 km45 km20 km+1
ForestNature & Off-Road+5
Photo: Jorge Jaramillo · CC BY-SA 4.0 · Wikimedia CommonsTrail Running
Essec Night Run
Cergy, France
February 19, 2027Date confirmed
16 km9 km
Night RunLakes & Ponds+5
Photo: Guilhem Vellut from Paris, France · CC BY 2.0 · Wikimedia CommonsRoad RunningWalking & Hiking
Saint-Witz Half Marathon
Saint-Witz, France
March 20, 2027Date confirmed
21.1 km13.4 km10.3 km5 km+2
Nature & Off-RoadForest+2
Photo: Jonathan Beech · CC BY-SA 4.0 · Wikimedia CommonsTrail Running
2T2M
Montmorency, France
March 27, 2027 to March 28, 2027Date confirmed
83.9 km62.5 km44.9 km23.1 km+1
Night RunSeaside & Coast+6
Photo: gadl · CC BY-SA 2.0 · Wikimedia CommonsRoad Running
Ekiden de Roissy Pays de France
Roissy-en-France, France
April 25, 2027Date confirmed
42.2 km
Lakes & PondsRelay+3
Photo: Daniel VILLAFRUELA · CC BY-SA 4.0 · Wikimedia CommonsTrail Running
Paris-Backyard-Ultra - Cergy
Cergy, France
April 30, 2027Date confirmed
6.71 km
Nature & Off-RoadForest
Dates & Schedule
Race Calendar
November 2026
| Date | Event | Location | Disciplines | Distances |
|---|---|---|---|---|
| Nov 14, 2026 - Nov 15, 2026 | Trail des Châtaignes | Cormeilles-en-Parisis, Île-de-France, FR | Trail Running | 48 km32 km16 km14 km |
| Nov 22, 2026 | RUN & BIKE TRIAXION CERGY | Cergy, Île-de-France, FR | Bike & Run | 18 km7 km |
December 2026
| Date | Event | Location | Disciplines | Distances |
|---|---|---|---|---|
| Dec 5, 2026 - Dec 6, 2026 | Trail Les 40 Bosses | Saint-Leu-la-Forêt, Île-de-France, FR | Trail Running | 120 km75 km45 km20 km |
February 2027
| Date | Event | Location | Disciplines | Distances |
|---|---|---|---|---|
| Feb 19, 2027 | Essec Night Run | Cergy, Île-de-France, FR | Trail Running | 16 km9 km |
March 2027
| Date | Event | Location | Disciplines | Distances |
|---|---|---|---|---|
| Mar 20, 2027 | Saint-Witz Half Marathon | Saint-Witz, Île-de-France, FR | Road RunningWalking & Hiking | 21.1 km13.4 km10.3 km5 km |
| Mar 27, 2027 - Mar 28, 2027 | 2T2M | Montmorency, Île-de-France, FR | Trail Running | 83.9 km62.5 km44.9 km23.1 km |
April 2027
| Date | Event | Location | Disciplines | Distances |
|---|---|---|---|---|
| Apr 25, 2027 | Ekiden de Roissy Pays de France | Roissy-en-France, Île-de-France, FR | Road Running | 42.2 km |
| Apr 30, 2027 | Paris-Backyard-Ultra - Cergy | Cergy, Île-de-France, FR | Trail Running | 6.71 km |
November 2027
| Date | Event | Location | Disciplines | Distances |
|---|---|---|---|---|
| Nov 3, 2027 | Spooktacular Raid | Cergy, Île-de-France, FR | Road Running | 5 km |
Date to be announced
| Date | Event | Location | Disciplines | Distances |
|---|---|---|---|---|
| Date to be announced | Eragny Trail Tour | Éragny, Île-de-France, FR | Trail RunningWalking & Hiking | 12 km6 km3 km2.4 km |
| Date to be announced | Trail De L'Isle Adam | L'Isle-Adam, Île-de-France, FR | Walking & HikingTrail Running | 43 km30 km26 km13 km |
| Date to be announced | Festival des 3 forêts | Mériel, Île-de-France, FR | Trail Running | 162 km100 km71 km65 km |
Events by Month
Overview & Route Character
The administrative area of Races in Val d'Oise (Île-de-France Region, Val d'Oise, France) is represented in the RunningCompass catalog with 42 public events and 182 individual races, including 27 events with confirmed dates for the 2026-2027 season. Core disciplines include Trail Running, Road Running, and Walking & Hiking. Key host locations include Cormeilles-en-Parisis, Cergy, Saint-Leu-la-Forêt, and Saint-Witz. Notable events in the selection include Trail des Châtaignes, RUN & BIKE TRIAXION CERGY, and Trail Les 40 Bosses.
Race distances span from 0.5 km to 162 km, reaching up to +4,900 m of elevation gain on the most demanding courses. Every race listed for Races in Val d'Oise includes an interactive MapLibre course map powered by OpenStreetMap, a high-resolution SVG elevation profile with gradient telemetry, and a direct GPX track download.
Questions & Answers
Frequently asked questions (FAQ)
How many running events and races take place in Races in Val d'Oise?
RunningCompass currently lists 42 verified events with 182 individual races in Races in Val d'Oise. A total of 27 events have confirmed upcoming dates, while additional annual editions include full course and distance specifications. Notable events in the selection include Trail des Châtaignes, RUN & BIKE TRIAXION CERGY, and Trail Les 40 Bosses.
What disciplines and race distances are offered in Races in Val d'Oise?
Events in Races in Val d'Oise focus on Trail Running, Road Running, and Walking & Hiking. Course distances range from 0.5 km entry-level races up to 162 km endurance challenges. Primary host cities and towns include Cormeilles-en-Parisis, Cergy, Saint-Leu-la-Forêt, and Saint-Witz.
What is the course profile, terrain, and elevation gain like in Races in Val d'Oise?
The most selective courses in Races in Val d'Oise climb up to +4,900 m of positive elevation gain. Each event page provides exact altitude range, ascent (+m), descent (-m), average and maximum gradient, an interactive course map, and a downloadable GPX file.
How can I find dates and register for running events in Races in Val d'Oise?
The monthly race calendar on this page groups all confirmed dates chronologically alongside annual events awaiting their next date announcement. Use the discipline, distance, and month links or switch to the interactive map view (/en/events?view=map) to inspect individual event profiles and official organizer registration links.