The Belgian Grand Prix arrives this weekend carrying three numbers that might usually fly below the radar. Spa-Francorchamps hosts the most affordable pit cease in Formulation 1, an 18.4 second median value throughout 5 seasons of measured knowledge, the bottom of any circuit. Its undercuts succeed 71 % of the time. And its corners are about to offer the 2026 season’s strangest discovering, a tough tyre that wears quicker than the tender, its sternest examination but.
Here’s what 2,106 measured pit stops, 886 undercut makes an attempt and 5 seasons of tyre knowledge say about Sunday…
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Key Takeaways
Spa has the most affordable pit cease of the 2022-2026 period: an 18.4 second median value, with 11 of the 15 least expensive green-flag stops in 5 seasons of knowledge, as a result of the pit lane bypasses the La Supply hairpin advanced.
Undercut makes an attempt at Spa succeed 71 % of the time throughout 48 measured circumstances, with a median achieve of 0.84 seconds.
Traditionally Spa produces one of many steepest tyre hierarchies on the calendar: softs degrading at 0.100 seconds per lap in opposition to hards at 0.060. The 2026 vary has inverted that order all over the place else, and Spa’s high-energy corners are one of the best likelihood all season for the laborious tyre to battle again.
The calendar’s least expensive pit toll meets a season drifting towards everlasting one-stop races: if any circuit tempts groups right into a second cease, the information says it’s this one.
The warning flag over all of it: the 2025 Belgian Grand Prix produced not a single clear green-flag pit cease in our dataset. Spa giveth, and Spa’s climate taketh away.
The Least expensive Pit Cease in Formulation 1
Measured in opposition to every driver’s personal tempo throughout each dry race from 2022 to 2026, a green-flag pit cease at Spa prices a median of 18.4 seconds, the bottom determine of any circuit within the dataset and practically ten seconds cheaper than the period’s dearest pit lane at Imola. The quantity is freakishly steady, 18.10 in 2023, 18.46 in 2022, 18.64 in 2024, and the period’s least expensive measured cease of all occurred right here: 15.1 seconds. Eleven of the fifteen least expensive stops in 5 seasons of knowledge belong to this one circuit.
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The reason being geometry relatively than heroics. Spa’s pit lane cuts off the La Supply hairpin advanced, so whereas a pitting automotive trundles by the lane on the restrict, its rivals are negotiating the slowest nook on the circuit. A pit lane is barely costly relative to the monitor it bypasses, and Spa’s bypasses extra invaluable actual property than anyplace in Formulation 1. The complete circuit-by-circuit pit cease pricing exhibits Spa because the outlier within the pleasant path.
Spa in opposition to the period’s dearest pit lanes, 2022-2026. Supply: F1 Chronicle evaluation of official F1 timing knowledge.
A 71 P.c Undercut
Forty-eight undercut makes an attempt at Spa survive the filters throughout the period, and 34 of them labored: a 71 % success price with a median achieve of 0.84 seconds. The achieve is modest by the requirements of Las Vegas or Bahrain, however the reliability is the purpose. An affordable cease lowers the price of making an attempt, and the long term to Les Combes provides contemporary tyres a full sector of high-speed monitor to do their work earlier than the primary actual defensive nook arrives. The most important measured Spa undercut of the period swung 10.8 seconds in 2022, although the standard one is a scalpel relatively than a hammer: sufficient to clear a rival, not often sufficient to clear a prepare.
The Exhausting Tyre’s Greatest Likelihood All Season
Right here is the real experiment. Traditionally, Spa punishes tender rubber like nearly nowhere else: our period knowledge has softs degrading at 0.100 seconds per lap of tyre age right here in opposition to 0.060 for the laborious, one of many steepest compound splits on the calendar, pushed by the sustained a great deal of Pouhon, Eau Rouge and the lengthy full-throttle climbs. However the 2026 season has turned the game’s tyre logic the wrong way up: as our 2026 tyre degradation knowledge confirmed, the laborious now wears quickest and the tender slowest, as a result of the lighter, lower-downforce vehicles can’t push sufficient vitality into a tough compound to convey it into its window.
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Spa is the one circuit on the calendar constructed to feed the laborious tyre the vitality it has been ravenous for. If the 2026 inversion survives this weekend, it survives anyplace, and the converged vary is the season’s defining tyre story. If as an alternative the laborious comes alive by Pouhon and the normal hierarchy reasserts itself for one weekend, that’s the first crack within the convergence, and the primary proof that the order flips again as masses rise. Both result’s a discovering, and we are going to measure it both manner on Monday.
Can Spa Break the One-Cease Season?
The strategic stakes are greater than one race. The paddock has spent 2026 overtly worrying a few season of processional one-stop races, a direct consequence of tyres that put on too slowly and too evenly to drive a second go to to the pits. A second cease solely occurs when its value is decrease than the tempo it buys, and Spa cuts that value additional than any circuit in Formulation 1. An 18.4 second toll, a 71 % dependable undercut, and a monitor the place fresh-tyre tempo converts into overtakes down the Kemmel Straight: if the one-stop sample breaks anyplace this season, the information says it breaks right here.
The trustworthy caveat comes from the dataset itself. The 2025 Belgian Grand Prix contributed no clear green-flag stops in any respect, its pit home windows swallowed by the climate and the warning durations Spa produces so reliably. Each quantity on this preview assumes a dry, inexperienced race, and that is the circuit the place that assumption goes to die. Rain doesn’t invalidate the evaluation; it merely replaces it with a unique race completely.
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What to Watch on Sunday
Three checkpoints, every measurable. First, stint lengths on the laborious tyre: if hards are operating lengthy and steady by the center of the race, the 2026 inversion is bending at Spa. Second, the lap-eight-to-fifteen window: with an 18.4 second toll, the undercut menace opens early, and the primary real try tells you whether or not the pit partitions have learn the identical numbers we now have. Third, the two-stop rely: something greater than a handful of deliberate two-stoppers is the one-stop season cracking precisely the place the information mentioned it ought to…
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Belgian Grand Prix Information: FAQsHow a lot time does a pit cease value at Spa?
A median of 18.4 seconds of race time throughout 2022-2026, the most affordable of any circuit in Formulation 1, measured in opposition to every driver’s personal tempo on green-flag stops in dry races. The period’s single least expensive cease, 15.1 seconds, additionally occurred at Spa.
Does the undercut work at Spa?
Sure, extra reliably than nearly anyplace: 71 % of the 48 measured makes an attempt from 2022 to 2026 gained time, with a median swing of 0.84 seconds. The beneficial properties are reasonable, however the low-cost pit cease and the run to Les Combes make it a low-risk, high-frequency weapon.
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What number of pit stops will there be on the Belgian Grand Prix?
The 2026 season has trended closely towards one-stop races as a result of the present tyre vary wears slowly and evenly. Spa’s uniquely low-cost pit cease makes it the most certainly circuit on the calendar to tempt groups into two, climate allowing.
Which tyres are finest at Spa?
Traditionally the laborious, which degrades at 0.060 seconds per lap right here in opposition to 0.100 for the tender in our period knowledge. In 2026 that ordering has inverted throughout the season, with the laborious sporting quickest, and Spa’s high-energy corners are one of the best take a look at but of whether or not that inversion holds.
