FULL DISTANCE TRIATHLON PORTUGAL - CASCAIS SWIM (3.8km) - Single-loop swim in the protected Cascais Bay. - Start at Praia da Ribeira and finish in front of the Clube Naval Fortress. - Water temperatures in October range from 17–19°C (62.6–66.2°F). BIKE (180km, Elevation Gain: 1465m) - Two-loop course showcasing the Portuguese Riviera, Guincho Beach, and the Sintra-Cascais Natural Park. - Highlights include smoother roads, iconic Lisbon landmarks (Belém Tower, Jerónimos Monastery, 25th of ...