10K races near Cesson-Sévigné

Tous Pour la Vie Janzé, Ensemble contre le cancer is a one-day charity sports event in Janzé, France, held in October at the Site Le Gentieg. The event focuses on cycling and walking, offering road cycling, gravel, VTT mountain biking, cyclo-cross-style riding, touring rides, and a 12 km walk, all supporting the fight against cancer. The marked courses provide clear choices for distance and surface, with GPS tracks available. Road cyclists can select a 50 km blue route or a 70 km red route. Gravel riders have a 50 km blue route, and mountain bikers can choose a 40 km blue route. The entry fee for adults with a license is 8 euros. The event also features food and entertainment at the site, serving as both a local sports activity and a community fundraiser.

Les Foulées de la Vie is based at the Gentieg site in Janzé, in Brittany, France, with races and Nordic walking events for adults and children. The program includes 5 km and 10 km individual races, 5 km and 10 km team relays, 5 km or 10 km Nordic walks, and children's races over 600 m, 1.2 km, and 1.8 km. The routes are mostly off-road, using paths and sections through woods, and a GPX track is provided for the course. The event is organized by Tous pour la vie janzé, with cups and prizes for the first three women and men in each event, a t-shirt for the first 1,000 registered participants in the 5 km, 10 km, and Nordic walking races, and profits split between Institut Curie and the Eugène Marquis center in Rennes. There is also a VIE'ATHLON option that adds a 350 m swim and a 25 km bike ride before either a 5 km or 10 km run.

Foulées nature bruzoises is a nature-running event on the Ker Lann campus in Bruz, Brittany, held in early October. Participants select from two short off-road routes, approximately 5.3 km and 10.1 km, with a total limit of 500 runners. The shorter race is for younger teens and adults, and the longer one is for older teens and adults. The course is set around the Kerlann campus, giving the race a local and contained feel. The event is approaching its 47th edition. In a recent year, participation records were broken with over 500 runners in the program, including many children. Licensed runners can register with French athletics or triathlon federation credentials; others require the PPS health form. Bib pickup and last-minute in-person registration occur at the Intermarché in Bruz on Saturday afternoon. Bib pickup is also available at Ker Lann on Sunday morning before the races begin.

Courir pour la vie à Janzé is a charity run held at the Gentieg site in Janzé, Brittany. It takes place over a weekend in October and is linked to Tous pour la vie, the local association that organizes Courir pour la vie-Courir pour Curie. The event focuses on fundraising and support for individuals affected by cancer, their families, and medical research, rather than solely on race times. Since its inception, the event has attracted tens of thousands of participants, with support from the Pays de la Roche aux Fées and Châteaugiron regions. Funds raised are divided equally between two cancer research institutions: the Eugène Marquis center in Rennes, which is Brittany's only facility dedicated exclusively to cancer treatment, and the Institut Curie in Paris. The association reports that it generates more funding for these two centers than any other organization.

The Ker Lann Trail is a campus race in Bruz, held on the Ker Lann campus by the BDE IHECF and IHECF Rennes. It features short, accessible distances, with 5 km and 10 km options for runners from the IHECF student and employee community. This event, in its second edition, had 436 participants, double the number from the first. The route follows natural paths, wooded areas, and country lanes, passing by the schools and company buildings on campus. The 10 km can be run individually, in four-person teams to determine the best school and best company based on total time, or as a 2 x 5 km duo relay. Local partners include Avem, Avril, Fic Expertise, Aplim, Biomérieux, and Subway. Organizers emphasize volunteer work and local campus involvement as key to the race's operation.

Tout Rennes Court is a city running weekend in Rennes, the Breton capital in Ille-et-Vilaine, held in October. It is built around road races and walking options. The program includes 2 km, 5 km, 10 km, and a half marathon, with children’s and junior races for school-age participants. It started in 1983 and is organized by Association COURSSS, aiming to bring together runners from different backgrounds and ability levels. The longer routes use central Rennes, passing the banks of the Ille and Vilaine rivers, the city centre around République, Saint-Pierre Cathedral, Thabor and Oberthur parks, and streets lined with medieval half-timbered houses. The half marathon starts near the Cité Judiciaire and finishes on the Esplanade Charles de Gaulle. Nearly 20,000 people participate across the races, from club runners to families and first-timers using the shorter distances. The weekend also includes youth races and activities linked to sport, health, nutrition, and schools.

Neveztell Trail is a trail-running weekend in Nouvoitou, Ille-et-Vilaine, offering races from 10 to 25 kilometers. Held in October, it features 10 km, 15 km, and 25 km trail options. Additionally, there is a 13 km night race and two challenge formats that combine the night race with either the 15 km or 25 km route. Children have their own Mini-Trails on the first day, with distances ranging from 750 meters to 3000 meters based on age group. The routes traverse the countryside, forests, and natural landscapes surrounding Nouvoitou, avoiding a road-race format. This event marks its tenth edition and is organized by JSN Athlétisme. Sylvain Téhard, the president, acknowledges the volunteers, partners, sponsors, and local institutions as foundational to the race. The organizers emphasize eco-responsible practices aimed at minimizing the event’s environmental impact. It caters to a broad spectrum of participants: seasoned trail runners, individuals new to shorter distances, families with children, and those seeking the challenge of a night race combined with a second course.

The Marathon Vert de Rennes is a 42.195 km road race in and around Rennes, Brittany, held annually since 2011. Its environmental commitment is directly tied to the race: each kilometre completed results in one tree planted, with organizers reporting over 1.3 million trees planted since the event's inception. Participants can run the main marathon individually, in pairs, or as relay teams. The event also features a 10 km race, a women-only 5 km, night races, and a family walk. The current marathon course is primarily within Rennes, following a swift, FFA-sanctioned double loop along the Ille and Vilaine canals, concluding in the city center on the Esplanade du Général de Gaulle. Previous editions commenced at Cap Malo and traversed roads through the northern Rennes Métropole communes before reaching the city. The race has hosted the French Marathon Championships, and its inaugural event was sponsored by Haile Gebrselassie. Student and corporate challenges engage teams, while pacemakers, aid stations, on-route music, plogging sessions, and galette saucisse at the village contribute to the weekend's local character beyond the marathon itself.

Pléla'Run is a small race series in Plélan-le-Grand, Ille-et-Vilaine, Brittany, typically held in late October or early November. It combines road and trail running, offering adult distances of approximately 10 km and 18 to 20 km, alongside 1 km and 2 km courses for children and juniors. A 10 km Pléla'walk is also available, ensuring the event caters to participants beyond those focused on competitive times. The routes traverse wooded paths and country lanes surrounding Plélan-le-Grand. The longer trail is designed for runners seeking a more challenging experience than a flat road race. BBrocéliande Events organizes the event, anticipating approximately 500 participants and relying on over 110 volunteers. Entry fees are reasonable, with recent costs varying from 8 euros for the walk to 18 euros for the longer trail.

La Créative Chantepie is a road race held in late November in Chantepie, a town in Ille-et-Vilaine, Brittany. The primary event is a 10 km race on roads through the town and a public park. This single-loop race has a field limit of 2,200 runners aged 16 and over. It is the main distance offered and typically attracts a large local audience, with over 1,000 participants in the last edition. The route heads toward Chantepie’s newer districts and includes a climb on Chemin de Cucé, making it more than just a flat town run. The day also features a free 5 km race for 16- to 25-year-olds, capped at 500 participants, and children’s races of 800 m and 2,000 m for younger age groups. Minors require parental authorization and a health questionnaire. The event supports sponsored charities. The 10 km race, preparing for its 26th edition, is a well-established fixture on Brittany’s running calendar.

The Trail du Porteur d'Eau takes place entirely within the forest of Rennes, beginning at Salle des Blanchets in Thorigné-Fouillard, close to Rennes. This nature-running and trail series offers four distances: a 10 km Course Nature, an 18 km Trail Découverte, a 27 km Trail Court, and a 37 km trail for those seeking an extended forest run. The event is held in December, a time when the terrain is often wet, greasy, and slippery, making trail shoes a strong recommendation. The courses utilize forest tracks, mountain-bike paths, and GR walking trails, avoiding road loops. The 10 km race is open to solo runners or mixed duos, while the longer distances cater to participants progressing from discovery trails to more challenging off-road endeavors. Starts are staggered throughout the morning, commencing with the longest race and concluding with the 10 km. Entry fees are reasonable, with prices increasing after the registration deadline should bibs remain available.