The Maratón Vías Verdes Girona by Nutrisport takes runners from Girona's medieval center towards the Costa Brava along old railway lines converted into greenways. The event provides 10 km, 21 km, 30 km, and 42 km distances, catering to participants seeking anything from a short point-to-point run to a full marathon. The course utilizes the Vía Verde del Carrilet, largely avoiding traffic, with approximately eighty percent compact dirt track and some asphalt segments.
The route traces the former narrow-gauge train line from Girona to Platja d'Aro, passing through locations like Cassà de la Selva, Llagostera, the Ridaura valley, and Santa Cristina d'Aro, concluding at the Platja d'Aro Sports Palace. It connects the Gironès and Baix Empordà regions, crossing rural and forest scenery with a predominantly flat or gently sloping profile conducive to fast times. The race supports sustainable sports tourism, featuring chip timing, aid stations, a finisher medal, a technical shirt, cloakroom facilities, and bus transportation to the starting areas.