The Triathlon Sprint Citta di Santa Marinella begins on the shoreline before the town promenade, with the swim taking place in the open sea where observers can watch from the waterfront. It is a sprint-distance triathlon on the Lazio coast, typically held near the end of the racing season, and the start is scheduled for early afternoon.
The bike course utilizes a section of Via Aurelia between Santa Marinella and Civitavecchia, closed to traffic, on a quick circuit suitable for those new to triathlon. The run remains within the town and involves two passes through the tourist port. Approximately 200 athletes from across Italy participate; the event has been held for over a dozen years.