Both races begin on Passeig de la Ribera, close to the Sitges seafront. The Mitja Marató de Sitges takes place in January in Sitges, Barcelona, featuring a 21 km half marathon and a 10.5 km Quart de Marató. The shorter race starts at 9:00 AM, with the half marathon commencing at 10:00 AM.
The event offers participants a choice between the full half marathon distance and a shorter quarter-marathon race, including school races for younger participants. The half marathon is in its mid-forties by edition count, while the Quart de Marató is much newer, in its teens. Adult participants use the Championchip yellow-chip system, but the school races do not use timing chips.