Image by Yoyodu10, licensed under CC BY-SA 4.0 (Credit Llinks at the end of the content)
We continue our journey by bringing you the lost circuits of the past. There are plenty of forgotten F1 circuits where legendary drivers competed. Some hosted a single race before disappearing from the calendar, while others welcomed F1 back several times before being abandoned within a relatively short period.
The Lost Circuits of the past
Each of these venues left behind stories of chaos, brilliance and regret that still echo through F1 lore.
Pescara circuit – Longest F1 circuit ever (1957)

The Pescara Circuit in Italy holds the record as the longest circuit ever to host a F1 Grand Prix, measuring an incredible 25.8 kilometers (16 Miles).
The narrow public road circuit ran through the Abruzzo countryside and villages, featuring long straights, fast corners, and very little room for mistakes.
F1 raced at Pescara only once, in 1957, with Stirling Moss taking victory for Vanwall. The enormous circuit was extremely demanding, with drivers reaching high speeds while racing along roads that offered almost no modern safety prodection.
Pescara never returned to the F1 calendar, raced once and never again. Its huge length, dangerous roadside conditions, lack of run-off areas, and difficult access for safety crews made it increasingly unsuitable as F1 moved toward safer and more controlled racing venues.
Ain-Diab’s in Marocco (1958)

The Ain-Diab circuit in Casablanca, Marocco, was a fast and demanding road circuit built through coastal sand dunes and sections of the main desert highway.
It hosted the final race of the 1958 F1 season, but that would be its only World Championship appearance, the race became famous because Mike Hawthorn secured the 1958 F1 title, and retired from racing, and Ain-Diab never returned to the F1 calendar.
Safety concerns, the difficulty and cost of maintaining a temporary road circuit, and F1’s growing move toward safer purpose-built venues eventually left the Moroccan track behind, but today the circuit is remembered as one of F1’s forgotten circuits and as the place where the 1958 championship reached its dramatic conclusion.
AVUS: Circuit in Berlin (1959)

The AVUS circuit in West Berlin was one of the strangest tracks ever used by F1.
It consisted mainly two long parallel straight connected by a hairpin and an enormous 43-degree banked corner covered with bricks, the extreme layout produced very high speeds and placed enormous stress on the cars and tires.
Same as Ain-Diab and Pescara circuit, F1 visited AVUS just once and never again, in 1959. Because of the circuit’s extreme speeds, the Grand Prix was divided into two heats rather than being run as a conventional single race.
The German GP eventually returned to more traditional venues, while AVUS disappeared and never returned to the F1 calendar just after one race.
Monsanto circuit in Portugal (1959)

Another circuit that F1 never returned is the Mosanto Park Circuit in Portugal. It was a challenging road circuit that twisted through parkland and public roads. It hosted its only F1 World Championship race in 1959, with Stirling Moss taking victory.
Stirling Moss dominated the race weekend at Monsanto. He was fantastic in qualifying, setting a time two seconds faster than Jack Brabham, and in the race, he went on to lap the entire field.
The circuit was known for its difficult conditions, with changing roads surfaces, blind crests, and sections where drivers had to cross tram tracks at high speed.
F1 never returned to Monsanto Park as safety standards began to change and the sport increasingly favored purpose-built circuits with better protection for drivers and spectators
The Monsanto Park Circuit has not hosted races for over 50 years. And now; the construction of the Autodromo do Estoril, along with parts of the track becoming the A5 motorway, ended all racing at the historic Lisbon Venue.
Boavista in Portugal (1958/1960)

Here at the Circuito da Boavista in Porto, Portugal, Formula 1 raced twice, in 1958 and 1960. The layout ran through narrow city streets, with cobblestones, sidewalks, lampposts, and exposed tram tracks creating a difficult challenge for the drivers.
The 1958 race produced one of the most famous moments in F1 history when Stirling Moss showed sportsmanship that helped protect Mike Hawthorn’s championship position, so what really happened is that Hawthorn spun his Ferrari and later faced disqualification after bump-starting the car in the wrong direction on an escape road, but Stirling Moss defended Mike Hawthorn to the stewarts, helping him keep his second-place finish and the valuable points that eventually contributed to Hawthorn winning the championship by just one point at the end of the season.
Two years later, Jack Brabham returned to Boavista and won the race, despite its memorable races, Boavista never returned to the F1 calendar.
As F1 moved toward safer, purpose-built circuits, Boavista was eventually left behind, but its brief place in F1 history remains memorable for its challenging layout and two remarkable Portuguese Grand Prix.
The Circuito da Boavista no longer hosts races, inactive since 2013; revived briefly from 2005 for touring car and historic events, but canceled in 2015 due to high costs. Most major Portuguese racing takes place at permanent tracks like the Algarve circuit in Portimao or Vila Real street circuit.
The Revived Circuit from 2005 to 2013:

Pedralbes, Barcelona (1951/1954) F1 raced twice and never again

In Formula 1 history, Barcelona has had three different circuits that hosted Grand Prix races. The first was the Pedralbes Circuit, which hosted races in 1951 and 1954. Barcelona later used the Montjuïc Circuit, which hosted the Spanish Grand Prix several times during the 1970s, while the Circuit de Barcelona-Catalunya is the venue that remains on the F1 calendar today.
However, the Pedralbes Circuit was incredibly fast 6.3-kilometer street circuit made up of wide city avenues, including a huge two-kilometer straight on Avinguda Diagonal, but the circuit offered very little protection for drivers, its long straights and open roadside areas meant that the track wasn’t safe even for spectators. Pedralbes was considered unsuitable under the new standards, and its temporary layout was effectively left behind and never returned to the F1 calendar. The winners at Pedralbes were Juan Manuel Fangio in 1951 and Mike Hawthorn in 1954.
This circuit no longer exists; but much of its route still runs through Barcelona. Avinguda Diagonal, which was the main straight, now carries city traffic, Turn 1 is a busy overpass, and Avinguda de Pedralbes remains recognizable. The circuit was closed in 1995.
Sebring F1 US GP (1959) – never returned after one race

The Sebring International Raceway in Florida hosted the first F1 race in 1959, becoming the dramatic setting for the season finale, Brabham secured his first World Championship after Cooper ran out of fuel and he famously pushed the car across the finish line to take fourth place.
Despite historic finish, reports suggest that the race was a major financial failure, with a very small crowd failing to generate enough revenue to cover the costs of staging the event and the prize money.
As a result, F1 didn’t return to Sebring, and the United States Grand Prix moved to Riverside for 1960 F1 season.
Riverside: The California Circuit F1 Eventually Left Behind

The Riverside International Raceway in California hosted the United States GP in 1960, bringing F1 to the California desert for the first time, the race was won by Stirling Moss – dominating the race for 75-lap from pole position.
Despite the impressive race, Riverside faced several challenges as a F1 venue, its remote desert location made it difficult to attract large crowds, while the circuit’s rough and dusty conditions were demanding for teams, cars, and spectators.
F1 did not return to Riverside, and the United States GP moved between different American venues. Riverside continued to host other major races for many years, but it eventually disappeared from the F1 calendar. Today, the former circuit has been demolished and no longer exists since 1989.
The Dallas F1 Circuit That Melted

The circuit in Dallas, Texas, hosted the 1984 United States GP and became one of the most difficult races of the season, the temporary street circuit was hit by extreme Texas heat, with temperatures reaching around 104°F (40°C).
The track conditions became so bad that sections of the surface began crumbling into loose gravel, creating serious problems for the drivers, Keke Rosberg won the race.
The combination of extreme heat, deteriorating track conditions, safety concerns, and the financial difficulties surrounding the event meant F1 never returned to Dallas, the 1984 race remained the circuit’s only appearance on the F1 calendar.
Caesars Palace: Las Vegas F1 Circuit That Lasted Only Two Years
The Caesars Palace GP circuit in Las Vegas was a temporary track built entirely in the parking lot of the Ceasars Palace hotel, it hosted the F1 season finales in 1981 and 1982, making it one of the most unusual venues ever used for a World Championship race.
Caesars Palace GP decided F1 Championship in both years it hosted F1, in 1981, Nelson Piquet finished fifth while Carlos Reutemann failed to score, allowing Piquet to win the title by one point. In 1982, Keke Rosberg also secured the championship in this circuit with a fifth place finish, despite winning only one race during the entire season.
The flat layout was designed in a repetitive, three pronged shape and was raced counter-clockwise, placing unusual physical demands on the drivers, the intense heat and concrete surroundings made the circuit even more difficult, while the small crowds created an unusual atmosphere for a F1 event.
F1 never returned to Caesars Palace after 1982, the race struggled commercially, while drivers and teams were critical of the uninspiring layout and demanding conditions. The Las Vegas GP was eventually dropped from the Calendar, leaving the parking-lot circuit as a short-lived chapter in F1 history.
Last words
These circuits were now just forgotten, they were sacrificed. Each one left a scar on Formula 1, a lesson that speed without caution comes at a terrible price.
They helped shape modern safety standards, improved logistics, and forced the sport to think bigger and smarter. And while they may be buried under highways, forests, or casinos, their echoes remain in every decision F1 makes today.
FEATURED IMAGE CREDITS:
Yoyodu10, licensed under CC BY-SA 4.0 via Wikimedia Commons
