The Semi-Marathon International de Terrassa is a demanding half marathon held in Terrassa, a Catalan city near Barcelona. It is not a flat urban run; the race utilizes the city’s hills, presenting a tougher profile than many big-city half marathons.
The course crosses the historic center, sloping boulevards, and residential neighborhoods, integrating the race with local streets rather than a closed-off route. It attracts runners seeking a genuine sporting challenge, with local support and an organized atmosphere in the heart of Catalonia.