Two configurations are in active use. The original circuit runs 3.145 km with 15 turns; the modified layout reduces this marginally to 3.055 km while maintaining the same 15-corner count through subtle alterations to the infield section. Fifteen corners is a high number for a circuit of this length — roughly one corner every 200 metres — which produces a flowing, rhythm-dependent lap where carrying speed through the complex is more valuable than peak acceleration on the straights. The configuration rewards drivers with strong car feel and mechanical grip management, which has made it a useful development circuit for single-seater series looking to test driver technique beyond raw horsepower.
Londrina's climate is subtropical and warmer than the southern circuits like [[taruma|Tarumã]] or the former [[curitiba|Curitiba]] track — an intermediate between the extremes of the national calendar. The paddock infrastructure has been steadily upgraded across the circuit's three decades of operation.
[[stock-car-brasil|Stock Car Brasil]] is the headline series, with Londrina appearing as a regular fixture on the national calendar. NASCAR Brasil and Formula Truck have also visited; the latter series has run here from 2022 onward in its current format. Formula 3 Sudamericana and Brazilian Formula Renault used the circuit as part of the South American single-seater ladder — the technical layout serving as a valid differentiator between talent levels in a way that pure-speed circuits cannot.
Matheus Iorio holds the Formula Three lap record on the modified circuit at 1:04.653, set in 2016. Cacá Bueno — one of [[stock-car-brasil|Stock Car Brasil]]'s most decorated champions — holds a benchmark of 1:18.642 in Super Touring on the original layout from 1998, a record that predates the circuit's more significant modern modifications.
The circuit's naming history is itself a significant moment: an inauguration in August 1992 bearing the name of a driver still actively racing, still world champion, who died before the decade closed. The track carries that weight quietly — not a memorial to a distant legend but to a figure whose career was live when the tarmac was first laid.
Cacá Bueno's long association with the circuit across multiple series is a thread through Londrina's competitive history that connects the late 1990s Super Touring era to [[stock-car-brasil|Stock Car Brasil]]'s modern structure. For a circuit in the interior of Paraná rather than a state capital, its longevity and consistent calendar presence across three decades represents a stable commercial and civic commitment to motorsport that many comparable facilities have not maintained.
[[brazil|Brazil]] — national motorsport context
[[stock-car-brasil|Stock Car Brasil]] — primary tenant series
[[ayrton-senna|Ayrton Senna]] — circuit namesake
[[caca-bueno|Cacá Bueno]] — multi-era Stock Car Brasil champion with records here
[[curitiba|Autódromo Internacional de Curitiba]] — fellow Paraná motorsport institution
[[taruma|Autódromo Internacional de Tarumã]] — fellow southern Brazilian Stock Car Brasil venue
[[velocitta|Velo Città]] — fellow modern Stock Car Brasil circuit
[[formula-one|Formula One]] — context for Senna's career during the naming period
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