01·Course Characteristics
Conquering Cascais requires managing a windy, rolling bike leg through the Sintra hills and surviving an unshaded, undulating seaside run. It is a tactical battle against the Atlantic elements.
There's still hope!
The ideal build for this course is 16 weeks, and you have 13. We'll compress the essentials into your remaining time, prioritizing the demands that matter most on this course to get you to the finish line.
02·Course by Section
A single-loop swim in the semi-sheltered Cascais Bay. Athletes start at Praia da Ribeira and finish in front of the historic Fortress at the Clube Naval. Expect cool water temperatures and calm bay conditions.
A challenging single-loop route starting along the exposed, windy Estrada do Guincho. The course climbs into the Sintra-Cascais Natural Park with gradients up to 9% and includes a loop on the Estoril F1 Circuit.
A two-loop out-and-back course along the seaside promenade linking Cascais to Estoril. The route is fully paved but continuously rolling with gentle inclines, offering no shade against the sun.
03·AVG beginners' Training Timeline
This 16-week plan is customized for Cascais's distinct challenges. It systematically builds your aerobic foundation, prepares your legs for the 9% climbs in the Sintra hills, and adapts your pacing strategy for the windy coast and unshaded, rolling run promenade.
Aerobic Foundation & Strength
Build aerobic volume and foundational leg strength for the hilly terrain.
Sintra Climbing & Specific Power
Develop sustained climbing power and prepare for the 9% gradients in Sintra.
Wind Prep & Race Simulation
Sharpen pacing under simulated windy and unshaded running conditions.
Adapts to your fitness, schedule & recovery every week.
Personalize this timeline04·Race-Day Execution
Expect air temperatures around 15°C to 23°C, but prepare for spikes up to 29°C. Dump water over your head at the seven run aid stations per loop to combat the intense sun and lack of shade along the promenade.
Target 60-90g of carbohydrates per hour on the bike. High sodium and fluid intake are critical due to the dehydrating coastal winds on the bike and potential high humidity during the run.
Control your effort on the initial windy coastal bike section and conserve energy for the climbs up to 9% in the Sintra hills. On the run, pace yourself conservatively over the continuous, rolling inclines to avoid early fatigue.
Wear a full wetsuit for the 17-19°C water. Choose a mid-depth front wheel to maintain stability in the strong Atlantic coastal winds, and book your stay in Cascais or nearby Estoril early.
The swim takes place in the protected Cascais Bay with expected water temperatures typically ranging between 17°C and 19°C (62.6°F to 66.2°F). Because of these cool conditions, wetsuits are legal and highly recommended for all participants. The single-loop, 1.9 km course starts at Praia da Ribeira and finishes at the Clube Naval in front of the historic Fortress.
The bike course is rated moderate to hard, featuring 700m to 770m (2,300 to 2,635 ft) of elevation gain over a single 90 km loop. You will face a challenging mix of steep climbs up to a 9% gradient in the Sintra-Cascais Natural Park, technical descents, and strong coastal winds along the exposed Estrada do Guincho. A unique highlight of this scenic but demanding route is riding a closed-road lap on the historic Estoril Formula 1 Circuit.
The 21.1 km run is a two-loop, out-and-back course along the seaside promenade connecting Cascais and Estoril. While fully paved, the terrain is 'lumpy' with continuous, rolling inclines that accumulate about 180m (590 ft) of elevation gain. The route offers virtually no shade, leaving you fully exposed to the sun and coastal wind, but you will be supported by dense crowds near the Cascais Marina.
You should prepare for a wide range of conditions, starting with cool morning temperatures around 15°C (59°F) that typically warm up to a pleasant 23°C (73°F) by the afternoon. However, be ready for unseasonably warm days that can spike up to 29°C (84°F), alongside strong, dehydrating Atlantic winds on the coastal sections of the bike and run. High sodium and fluid intake will be critical to combat the combination of wind, humidity, and potential heat.
You should fly into Lisbon Humberto Delgado Airport (LIS), which is a convenient 35-40 minute drive from the venue via taxi, rideshare, or a scenic train from Cais do Sodré station. It is highly recommended to book your accommodations early within Cascais to stay close to the compact transition area near the Marina. If Cascais is fully booked, the neighboring town of Estoril is an excellent, walkable alternative.
Your Personalized Plan
FE26 builds your plan around your Strava data, your real schedule, and the exact demands of IRONMAN 70.3 Portugal-Cascais — then adapts every week to how you actually perform.
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