Half Distance Triathlon Melbourne – Fast, Scenic & Spectator-Friendly Swim – 1.9km in Port Phillip Bay Rolling Wave Start at St. Kilda Beach, in front of the famous St. Kilda Sea Baths. Water temperature averages 18°C (wetsuit optional). Bike – 90km on Melbourne’s Iconic Beach Road Flat, fast, and scenic, offering some of the best cycling in Melbourne. Two laps along Beach Road, finishing near Catani Gardens. Run – 21.1km Along the St. Kilda & Elwood Waterfront Two-lap flat course with ...