Race Day in Cascais: Timeline, Common Mistakes and Backup Plans

The Days Before: Build Your Margin

In 2025, registration and bike check-in ran from Wednesday to Friday. Use this window to arrive early and remove variables:

• Wednesday/Thursday: arrival, bike reassembly, registration. If you can, recon the main climb by car or bike (~10 km, very rideable): seeing it kills the anxiety.
• Thursday/Friday: at least one wetsuit swim in the bay. Water in October sits around 17-19 °C: if you haven't done cold-water swims at home (2-3 before the race are recommended), this session matters even more. Your first contact with cool water should not happen at the start gun.
• Friday: pack your three bags (red run, blue bike, white) with a written checklist, bike check-in, then feet up.

Weather note: in the days before the 2025 race, strong wind was reported along the coast. Keep an eye on it all week: the wind picks your wheels, not your ego.

Race Morning: Work Backwards from the Start

In 2025 the age-group start was at 07:37 (check the athlete guide: it can change). Plan backwards: wake-up, tried-and-tested breakfast, transfer (with extra margin if you're staying in Lisbon), transition for tires and bike nutrition, wetsuit, warm-up. The weekend also hosts the full-distance race: expect more people and longer queues than usual.

The Swim: Your First Tactical Decision

Single lap from Ribeira Beach, roughly 1.9 km (the official page also mentions 1,800 m: the exact distance may vary). The course has 4 turn buoys plus many sighting buoys. Two classic mistakes to avoid:

1. The washing machine at the first buoy. If you're not a strong swimmer, start wide or slightly back. A few extra meters cost less than two minutes of gasping in the scrum. 2. Losing your line. One athlete in 2025 swam 150 m extra to avoid traffic. Sight regularly and use the intermediate buoys as reference points: the straight line is free, the crooked one isn't.

Bike and Run: The Mistakes That Cost You

• Getting sucked into pace lines: in 2025, drafting packs were reported with no visible referee motos. Race clean and, above all, don't match paces that aren't yours when you get passed.
• Attacking the 10 km climb: it's rideable and it's not where the race is won. The watts you save are needed on the rolling coastal section.
• Going out hard on the run: the first 2 km are slightly uphill. Start below target pace and settle in afterwards.
• Drinking badly: 2025 aid stations had small cups. Double-cup or walk for 5 seconds, at every aid station.

Backup Plans: Decide Them Now

Heat plan. Typical highs are 25 °C, but 2025 was raced in 27-29 °C. Trigger point: above 26-27 °C, slow your target run pace, use both on-course showers every lap, water on the head at every aid station.

Wind plan. If the week brings gusts: a mid-depth front wheel instead of deep-section, and accept coming out of the aero position on the most exposed coastal stretches. Test it beforehand, not on race day.

Swim plan. If the cold water gets to you at the start: first 200 m at an easy effort, breathe every two strokes, then build. Better to lose 30 seconds than to go into the red.

The Guiding Principle

This race doesn't have one single crux: it's an accumulation of small demands — cool water, constant rollers, possible heat, possible wind. The winner is whoever gets to the start line with decisions already made and margin already built. Finishing times range from roughly 4:28 to 6:55: whatever your goal, the method is the same. Arrive early, test everything, decide in advance.