Grinduro Italia is an off-road cycling event held in September in Massa Marittima, Tuscany, based at Bike Hotel Massa Vecchia. The format combines gravel riding with mountain-bike enduro: riders follow a single route across asphalt and dirt, with timed segments within a broader social ride. The event does not favor one specific bike type; gravel bikes, mountain bikes, and intermediate setups can all be suitable depending on the rider and the terrain.
The Italian event is part of the Grinduro international series, which includes stops in Germany, California, Pennsylvania, the United Kingdom, and Japan. Previous editions took place at Punta Ala and along the Maremma coast, offering 50 km and 100 km route options. The event emphasizes its festival atmosphere with local food, bike displays, live music, camping, showers, bike wash facilities, refreshment stations, chip timing, and a pasta party surrounding the racing.