La 21 di Reggio Emilia is a FIDAL-certified international race organized by Atletica Reggio asd. It features a competitive 10K route that includes two laps with Piazza Prampolini, as well as non-competitive 5K and 10K options. The event also offers a 50-meter track race and a family run. In a recent edition, 35% of participants achieved personal bests.