This week, Formula 1 returns to school—or at least figuratively. The paddock heads to a circuit many describe as the university of Formula 1 because of the incredible variety of technical challenges it presents to drivers and teams alike. We are, of course, talking about Spa-Francorchamps, which hosts the penultimate race before the summer break.
At 7.004 kilometres, Spa-Francorchamps is the longest circuit on the Formula 1 calendar and one of the most iconic. It has been part of the World Championship since 1950 and remains a favourite thanks to its rich history, long straights, high-speed corners and the greatest elevation changes of the entire season. As if the circuit itself were not demanding enough from both a technical and driving perspective, there is also the added challenge of its unpredictable weather.
Located deep within the Ardennes forest, Spa is famous for its unique microclimate. When rain arrives, the clouds often linger longer than in the surrounding areas, leaving sections of the circuit damp and significantly affecting track conditions.
In wet weather, drivers frequently encounter dry sections of track alongside areas that remain soaked, making the decision between slick tyres and intermediates particularly difficult.
Pirelli’s tyre selection
For this weekend, Pirelli has nominated the C2, C3 and C4 compounds.
Spa-Francorchamps is one of the most demanding circuits of the season for tyre loads and cornering forces, although it does not quite reach the extremes seen at Suzuka or Silverstone. The most iconic section remains the sequence from Eau Rouge through Raidillon, where the circuit climbs steeply while the corners flow rapidly from one direction to the other before leading onto the Kemmel Straight.
This section now features grooves in the asphalt designed to improve water drainage and enhance visibility during wet conditions.
The circuit was completely resurfaced a couple of years ago and typically offers relatively low grip during the opening stages of the race weekend. However, grip levels could be better than in previous seasons thanks to the recent GT racing weekend, with the Spa 24 Hours having laid down additional rubber on the racing line.
A unique setup challenge
The three sectors of Spa-Francorchamps each have very different characteristics and have always represented a major setup challenge for Formula 1 teams.
The first sector is the fastest and includes the long Kemmel Straight, where overtaking opportunities are plentiful. The second sector is much more technical, featuring medium-speed corners, many of them downhill, while the third sector is smoother and flows across a gentle uphill gradient.
This year, the introduction of the new aerodynamic solutions should make it easier for teams to find the right compromise between downforce and straight-line efficiency. Cars can run higher-downforce configurations for the technical sections while benefiting from the new straight-line mode on the long straights.
As demonstrated at Silverstone, drivers will also need to manage and recharge the Power Unit efficiently throughout the lap to maximize performance.
Temperatures could influence strategy
Track temperatures may also play a significant role throughout the weekend and could heavily influence race strategy.
During the Spa 24 Hours at the end of June, track temperatures exceeded 55°C. If similar conditions return, thermal tyre degradation is likely to increase, making two-stop strategies more attractive. Even so, the two hardest compounds in Pirelli’s range are expected to play the leading role during Sunday’s race.
Last year’s race
Last season, heavy rain delayed the start of the Belgian Grand Prix by more than an hour. After the formation lap, the starting procedure was suspended because visibility was considered too poor.
When the race eventually resumed, following four laps behind the Safety Car, every driver started on intermediate tyres. From Lap 11 onwards, the field gradually switched to medium tyres, with the only exception being Lando Norris, who opted for the hard compound instead. Only six drivers, all running towards the back of the field, completed a second pit stop.
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