Mosport: Canada's First Grand Prix Home

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Automobilista 2's v1.6 update saw the arrival of three new North American tracks - and while most will know Sebring and Road Atlanta, not too many might be aware of Mosport.

A bumpy airfield circuit, a winding blast through the hills of Georgia (USA, not Eastern Europe), and a Canadian classic - the trio of new circuits added to Automobilista 2 via the v1.6 update as part of the IMSA Track Pack are certainly exciting. And while most sim racers will know Sebring and Road Atlanta, Mosport might fly under the radar for some - and it really should not, in my opinion.

Located northeast of Toronto, Ontario, in what is close to "the middle of nowhere" territory, Mosport is one of those few circuits that have not seen a single layout change throughout its decades-long existence. The track opened in 1961, and it still uses the exact same, blisteringly quick trajectory. Add in some serious elevation change, particularly in the first half of the lap, and you are in for a treat.

Of course, run-offs and facilities have changed over the years, the track has been widened and the crest towards the end of Mario Andretti Straightaway was lowered (thanks to @Emery for bringing that up!), but the fact that the layout itself remains the same is remarkable. Road America would be another example for this, save for the addition of the motorcycle chicane at The Kink - but that did not alter the original layout.

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Image: racingcircuits.info

F1 Debut In 1967, Tragedy In WSC​

Anyway, back to Canada. Mosport, or Canadian Tire Motorsport Park, first saw Formula One action in 1967, making it F1's first Grand Prix home. The track would alternate with Mont Tremblant for the next few years, but from 1971 onwards, Mosport was the host of the Canadian Grand Prix. The only exception was 1975, where the event was not held at all, supposedly over "a financial disagreement between the track and the Formula One Constructor's Association", as Canadian sports outlet TSN put it.

F1's final trip to Mosport happened in 1977, after which the Canadian Grand Prix moved on to Montréal. That did not mean high-level racing would skip the track, though: Sportscar racing continued, and does to this day. Even the World Sportscar Championship ran here, with the 1985 1000 km of Mosport being the final time.

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Group C beasts at a relatively small, high-speed circuit like Mosport are exciting, but dangerous.

The race, sadly, was a tragic one. With Group C cars flying around a circuit that was no stranger to serious accidents - look no further than John Surtees, who was lucky to survive life-threatening injuries sustained at a 1965 crash in a Lola T70 - disaster struck early on. Driving a Porsche 962C for Kremer Racing, German Manfred Winkelhock suffered a tire failure when racing through Clayton Corner, crashing into the concrete barrier.

Winkelhock, who was also an F1 driver for RAM-March at the time, sustained head injuries that proved unsurvivable, as he succumbed to them the following day. It took marshals 25 minutes to extricate him from the wrecked 962. A mere three weeks later, Stefan Bellof died in the older-spec 956 at Spa-Francorchamps - a heavy blow to German motorsports, and one that apparently even led to a young Michael Schumacher questioning whether or not what he loved doing was something to continue.

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The Moss turns, named so after Sir Stirling Moss, who suggested that instead of the carousel-style hairpin, this two-corner approach would be a bigger challenge instead.

Stock Cars & Sportscars​

In the following years, Mosport hosted stock car and GT racing as well, and it was also a mainstay on the Atlantic Championship series, a junior series on the North American open-wheel ladder that ultimately led to IndyCar, and later, CART or ChampCar.

However, sportscars remained even more present. The American Le Mans Series ran at Mosport from 1999 to 2013, and IMSA has had multiple stints, currently racing LMP2 and GTD machinery in Ontario. Today, the NASCAR Canada Series, the Trans-Am Series, the Sports Car Championship Canada and the Canadian Superbike Championship round out the calendar of the circuit.

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LMP2 and GTD (so GT3) machinery diving into Turn 1.

A Fun High-speed Adventure In AMS2​

And while the current crop of Hypercars - or GTP, if you are so inclined - does not actually race at Mosport, that does not mean that we cannot do just that in sim racing. Automobilista 2's hybrid-powered prototypes are excellent fun around the sweeping circuit, and the braking zone into the first of the two Moss turns is quite tricky - but very rewarding if you get it right.

At the same time, AMS2's Mosport might not look the part (although maybe a retro version might come - you never know with Reiza), it also fits well on the calendars of three F1 seasons represented in the sim, those being 1967, 1969 and 1974. And somehow, I have a feeling that any of the 1990s IndyCars, called F-USA in the sim, might be a very good fit for the circuit as well.

Of course, you do not have to stick to AMS2 for your dose of Mosport. There are multiple mod versions available for Assetto Corsa in our download section, for instance, and there is an rFactor 2 version as well - although that is nine years old at this point, so your mileage may vary. Older sims like the original rFactor or the first Automobilista also have one or more modded Mosports available - and if you really want to go old school, look no further than Grand Prix Legends, which has the track by default.

What do you think of Mosport? Have you tried it before, and is it even maybe a favorite of yours? Let us know in the comments below!
About author
Yannik Haustein
Lifelong motorsport enthusiast and sim racing aficionado, walking racing history encyclopedia.

Sim racing editor, streamer and one half of the SimRacing Buddies podcast (warning, German!).

Heel & Toe Gang 4 life :D

Comments

if motogp/wsbk were to come at mosport, where would the long lap zone be placed?
 
Of course, run-offs and facilities have changed over the years, and the track has been widened, but the fact that the layout itself remains the same is remarkable.

Like Road Atlanta, it's also had a hump cut down to minimize flying cars near the end of Mario Andretti Straightaway. As I recall, the hump was reduced by about 8 feet.
 
Great track, only one spot is a bit too demanding. I hope that Reizas further optimizes the performance of this track. And there's still some texture flickering/z-fighting going on at the advertisements, these are reported already but unfixed.
 
Like Road Atlanta, it's also had a hump cut down to minimize flying cars near the end of Mario Andretti Straightaway. As I recall, the hump was reduced by about 8 feet.

@Yannik Haustein I believe turn 5A may have slightly altered as well; I've read reports that Moss Corner was "squared off" a bit. I'm unsure if that is purely visual due to how the track was widened (I'll get to that) or if it actually changed the racing line to be more squared off as well.

On the widening, it's worth noting that it was widened in such a way that the racing line didn't change. Most of the time a circuit gets widened they just add a bit to the side of the track. The result is a different racing line and, usually, a faster lap. When Mosport was widened it was done in a way where a single car's driving line was the same before and after. I'd imagine widening in that way would make several corners look more squared off as the extra width was added to the inside on the 'straight' bits, and the outside of the corners, giving an overall more squared look while the actual racing line retains the exact same trajectory.

Other points of note; modern GTP did race at Mosport in 2023, the inaugural season of the new rules. Sadly the class no longer races there, instead leaving P2 as the top class when IMSA visits. Big blow to the Canadian fans, for sure. Hopefully that gets reversed soon.

Turn 1 is a fast, blind, descending, desceptive corner that only requires a lift or a quick dab of the brakes. Turn 2 (aka Clayton Corner) is a monster, with a blind turn in before a crest, dropping several stories with questionable camber, also only requires a lift or quick brake dab and lots of guts. Turn 4 is a fast, blind, descending corner that... See a pattern, here? Turn 5 brakes up the fast, blind, descending corners with the singular slow complex on the entire circuit, though it is also more or less blind and, this time, very steeply ascending. Even in VR, you simply do not get any appreciation for just how steep these areas are. The steep entry to 5A is like a wall.

It's such a wild lap. So much incredible elevation change. Incredible flow, while still being quite technical. Fast. Very fast. The kind of place that requires commitment. Certainly don't build them like they used to.
 
Had some great IMSA fun in rF2 with the SGS sportscar mod around Mosport this past season of racing... Hypercars and GT3s is nuts on that track... Can see why they don't do it in real life...

Mosport is such an under rated track... Love it...
 
oh if I only had all those years back spent on this one in Grand prix legends

but you know what ? doesn't feel like a waste. this is a such a sweet and cool place to be
really, truly in love with it :inlove:

thanks REIZA, smart move :thumbsup:
god bless you for this one
 
Walked the entire track that damp, cool morning in 1968 with my dad, as a young lad of 7. Later that day we watched my first ever live F1 grand prix.
And after that, stood back in the paddock and witnessed my dad purchase Brian Roberstons' championship formula Vee! Suddenly he became a roadracer, and we towed home the Beech FV! It was later apparant that our little car had played a large role in launching Wayne Kellys' fabulous line of racing Vees in more ways then one.
The next 12 years of my life were the very best of times possible between a father and son! Culminating with him racing in "our" own crafted car, that i had designed and fabricated for him.
In addition to Mosport we travelled and raced at Harewood, Sanair, St Jovitte, Three Rivers, Watkins Glen and Nelson Ledges. But in his own words, many times "nothing compared to the challenge and risk/rewards of Mosport! Risks indeed, as I witnessed my best racing friend losing his dad one Sunday afternoon between turns 3 and 4 , in "the chute" as it was known!
I am a proud canadian for a great many wonderful reasons, and our racing capabililities of Eppie Weitsies, Horst Kroll, Moe Carter, Gilles Villenueve, Brian Stewart, Paul Tracy, Robert Wickens, ....and my incredible dad and hero, to name a few!
And that fabulous track, that has stood the test of time, and a legacy that rivals in its own wonderful way, that allows all Canadian racing fans to be very proud!
 
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I am a proud canadian for a great many wonderful reasons, and our racing capabililities of Eppie Weitsies, Horst Kroll, Moe Carter, Gilles Villenueve, Brian Stewart, Paul Tracy, Robert Wickens, ....and my incredible dad and hero, to name a few!
It's a real shame to see what has happened to our Canadian racing scene, don't you think? We used to have tremendous talents in the 90's: David Empringham, Paul Tracy, Jacques Villeneuve, Patrick Carpentier, Alex Tagliani, Claude Bourbonnais... In the mid-80's, Bertrand Fabi was a hugely talented driver who was destined for great things, maybe even F1. He died tragically in 1986 while testing a F3 car in the UK. And I will always mourn Greg Moore, who would have been an Indycar champion (multiple times) had he not died at Fontana in 1999.

It's sad that the last two Canadians in F1 are Lance Stroll and Nicholas Latifi, two guys who only got there because of their dad's money. I don't know if there's anybody coming up in the junior series.
 
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