Serie A in Cagliari, a September superyacht regatta and a World Rally round on the island's gravel.
Cagliari Calcio
Italy's top or second division depending on the season, played at the Unipol Domus. The calendar runs August to May and tickets are easy to get.
Porto Cervo regattas
The Costa Smeralda yacht club hosts maxi-yacht and Swan regattas in September; the marina is worth walking even without a ticket to anything.
Rally Italia Sardegna
A World Rally Championship gravel round based around Alghero and Olbia, run in late spring or early summer. Many spectator stages are free.
Climbing and sea kayaking
The limestone at Cala Gonone and in the Supramonte draws climbers from March to November, and kayaks reach Golfo di Orosei beaches that roads do not.