Half Marathon races near Nantes

Nantes Training Notes

Nantes hosts 31 Half Marathon races in 2026 within 80 km of the city centre — upcoming dates, recurring series, and other races nearby, all in one place.

Locals run the Erdre when they want clean base miles without thinking too hard. The Erdre riverbanks give you a 6-kilometer course between Pont de la Tortière and Pont de la Jonelière, and the longer banks of the Erdre route runs 10 to 15 km from Château des Ducs de Bretagne to Parc de la Chantrerie or Port-Gachet. Bras de la Madeleine gives you a 4-kilometer out-and-back along the Hangar à Bananes. Parc de Procé suits hill reps, and Butte Sainte-Anne brings 121 steps when you want explosiveness. Abalone marathon de Nantes, Les foulées du tram, La Duchesse, and Trail de Nantes à Montaigu anchor the calendar.

Locals ride Nantes because the city makes daily Z2 easy and longer days simple. Nantes sits on La Vélodyssée, La Loire à Vélo, La Régalante, La Vélidéale, and Traversée Bretonne, with 822 km of bike paths and more than 30,000 bike parking spots. UCNA, founded on June 17, 1909, covers road racing, track, cyclocross, gravel, mountain biking, BMX, tandem, and handisport tandem. The Erdre river trail runs 74 km, and Grand-Lieu lake gives you a 73 km loop. The climbs sit around Parc de Procé, Butte Sainte-Anne, and the Cens valley.

Nantes works best from April to September, when the guinguettes open and rides can finish by the river. Summer stays warm at about 20°C, so locals stack base miles early, then use the Erdre, Île de Nantes, or Jardin des Plantes for shorter intervals when the day gets busy. Rain stays part of the deal all year, but the city centre still works for steady runs and practical bike days. Winter drops to about 7°C, and locals shift toward wet Z2, park loops, stairs on Butte Sainte-Anne, and shorter rides on known lines. Snow stays rare, so training rarely stops.