Riverside For Assetto Corsa: A Long-Lost US Road Racing Gem

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Despite their oval racing stereotype, the United States have plenty of excellent road courses as well. One of them, however, is lost forever – luckily, there is a version of Riverside for Assetto Corsa.

The Indianapolis 500 and the Daytona 500 are likely the most famous US-based races. Both of them are on superspeedways, and even though the latter’s road course is famous in its own right with the 24 Hours of Daytona, it is not what made the venue famous. However, exciting road courses are everywhere within the country. And that is not just since the opening of COTA in 2012, as Riverside for Assetto Corsa shows.

Riverside: One Of The Great US Road Circuits​

Racing fans and sim racers around the world cherish venues like Road America, Road Atlanta, Laguna Seca or Mid-Ohio, just to name a few. Winding the clock back over 30 years, though, another entry would be on the list of many – Riverside in California.

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Riverside's original layout (left) and the modified track used from 1969 to 1988. Image credit (2): racingcircuits.info

Situated about four hours of a drive east of Los Angeles in the Moreno Valley area, the track opened in 1957 after construction began that same year. It soon became a hub for road racing on the West Coast, even hosting the 1960 Formula One United States Grand Prix. Stirling Moss took victory ahead of Innes Ireland and Bruce McLaren – the only drivers to be on the lead lap by the end of the race.

By that time, the track had already seen two fatalities. John Lawrence lost his life in the opening event in 1957, and earlier in 1960, Pedro van Dory succumbed to injuries sustained in a sports car crash. Until 1968, 11 (!) more drivers died at Riverside. Ken Miles had died at Turn 9 in 1966 while testing for the Ford factory team. IndyCar legend AJ Foyt barely survived a brake failure going into the turn. Clearly, something had to be done.

Faster, But Safer​

For the 1969 season, the relatively slow 180-degree final turn was made faster. What sounds counterintuitive actually improved safety somewhat, as the preceding straight that went mostly downhill was shortened. A slight left kink led away from the former straight, opening up the banked Turn 9. This gave the track a more high-speed character, and its long configuration remained like this until 1988.

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Riverside’s Turn 9 in its modified guise was mind-bendingly fast.

The changes did not elimiate fatalities, but significantly reduced them. Compared to 11 deaths in as many years before, only eight more drivers passed away following incidents at Riverside in the following 20 years. The bumpy track remained a challenge and saw its share of hair-raising incidents. CART ace Dick Simon famously rolled his car on the back straight after a tire failure. Simon narrowly missed marshals and spectators, and luckily emerged from the wreck unharmed.

Both IMSA and IndyCar/CART raced at Riverside, Can-Am and Trans-Am also visited, among several other series. Until 1988, the circuit was an integral part of the NASCAR calendar as well, hosting as many as three rounds (in 1981) per year. The premier US stock car racing series used a shortened version, bypassing the Turn 7 infield.

No Future For Riverside​

By that point, the writing had been on the wall already. As the Moreno Valley kept expanding, residential areas moved closer to the track. Coupled with protests by environmentalists and the increasing value of the land, it was clear that the circuit would have no future.

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Riverside may have not been around for over 30 years, but racing fans miss it to this day.

Professional racing ceased after the 1988 season. For 1989, most of the backstretch had to be bypassed as construction on the site had already begun. After that season, Riverside closed its doors for good. Today, a shopping mall and a residential area sit where one of the great US road circuits used to be. Since 2003, there are no remains of the track anymore.

Riverside For Assetto Corsa: 1988 Throwback​

Luckily, as with many such cases, sim racing preserves a legendary circuit. Already in 2016, RaceDepartment member @LilSki released Riverside for Assetto Corsa. And even though its last update dates back to 2017, the circuit still holds up well in 2023. Not to mention that it is enormous amounts of fun.


LilSki’s version portrays the track as it was at its final NASCAR race in 1988. In Kunos Simulazioni’s stock Porsche 962C (which is not the IMSA version, but extremely close), the esses of the first sector at Riverside for Assetto Corsa are insanely quick, leading into a trick braking zone for Turn 6. After that, it is all about conquering the low-grip, bumpy infield including Turn 7 and the even trickier braking zone into Turn 8.

Riverside For Assetto Corsa: Bumpy, But Flowing​

Blasting down the back straight and through the dogleg into Turn 9 are nothing short of excellent as well. Older cars with less downforce fit the track very well, too. Its flow, bumpy nature and eleveation changes lend themselves well to these vehicles.

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The infamous back straight at Riverside International Raceway.

With a few modernizations, mostly a repave, it is not hard to imagine NASCAR, IMSA and IndyCar still racing there if Riverside was still around today. It is an enormous shame that it is not.

For another track that is no longer around but preserved in Assetto Corsa, be sure to check out our recent article on Crystal Palace in London.

Have you tried Riverside for Assetto Corsa already? Let us know your thoughts on the track on Twitter @OverTake_gg or 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

Remember back in the day watching one of very few overseas broadcastings, a thilling NASCAR battle with Richard Petty, Dale Walltrip (*edit, sry Darrel ofc), Rusty Wallace, Bill Elliott, Dale Earnheart Sr., Geoff Bodine, and other celebrities of which I as a 15-16 yo European kid knew nothing about, but were all pure legends to me after the race. So intense.
I don't remember exact year, might well be the closing season before the track sadfully closed.

Then manys later observed an rF1 track mod version and soon after likewise splendid for GTR2. And as first to-do I searched on Google Earth to find the track...it was devastating to me. So much soul lost for soulless grounds. At least I'm happy that I witnessed a single live broadcast race from the time.

An Lilski's AC version is a blast, have had many fine battles in the Corvette C5.R mod of "what could have been" but just as well as the heavy big block classics existing in the time.

Yes could be cool with official versions of this indeed legendary track.

Aaand...mentioning again: CDR - Continental Divide Raceways....of which drivers of the time described as "a better version of Riverside". Really miss a thorough modelled version of this track too.
 
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Staff
Premium
In the RaceDepartment Club Races we have visited Riverside several times with different cars.
Everytime it was great fun!

At the moment we haven't scheduled a race on Riverside yet because we have so much other tracks to visit.

But in a couple of weeks there will be again a voting for Track of the Month so if you want to have a go on Riverside, keep an eye on the announcement for Track of the Month here: https://www.racedepartment.com/forums/racing-club.671/?prefix_id=250 and place your vote for Riverside for December 2023.
 
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One of my favourite tracks in simracing. Raced it on my GPL days for the first time and had a scincillating battle for the win on a league, missed it by 4 tenths, dammit! :p The layout change of 1969 makes it even better for me.
 
I've run here about 7 or 8 times in Assetto Corsa's SRS. Cannot understand why people enjoy this track.It's structurally no different than 1960's Monza with only two real braking points at either end of the circuit.
It's good to have content from different creators to fit different tastes and opinions. But this post works as a personal reminder of why I always stay away from what you do, and why I have no expectations from GTRevival.
 
Premium
Really a beautiful race track. At first glance it doesn't seem very sophisticated, but when combined with old vehicles it does. This is where the race track shows its pitfalls. I was able to experience some exciting races back then in GT Legend, as part of the Altbierbude, and I hope that there will be a few more in AC.
 
I've run here about 7 or 8 times in Assetto Corsa's SRS. Cannot understand why people enjoy this track.It's structurally no different than 1960's Monza with only two real braking points at either end of the circuit.
Must say it has never occurred to me comparing Riverside with classic Monza.
It may well be that the design on a paper drawing roughly resembles similar category.

But when you drive around the tracks, it is in the nuances there's, to my experiences, a world of differences.

Riverside is much more "raw" with a lot of bumps and unevenness, cambered beautiful imperfectional turns, sand dusty surface and everything that makes this track so much more "alive".

The chase through the esses to turn 6 I see no similarities in Monza, maybe vaguely comparison with classic Suzuka at the most.

Turn 6 in itself ok maybe brake-in like Lesmo 1, but the escape from here to Turn 7 is like nothing else with the ramp down and ramp up before this left turn, loosing grip at critical braking point (a bit like NS Flugplatz), with something to accomodate for the driver.

Not to speak of the long right sweeper towards Turn 8, in the escape opening for speed but you immediately have to think of early braking in order to have the upperhand of the indeed narrowing right corner - of which the escape right/left is much more snappy than similar Lesmo 2 (edit: OK, bad comparison, classic Monza miss such kind of leg brace).
And OK, the high speed left kink towards last Turn 9 could maybe be compared a bit to similar classic Monza left sweeper where the Ascari curves later were implemented.

But last corner Turn 9 is way too different to be compared with Parabolica.
I think best comparison is with old infamous Peraltada of Magdalena Mixhuca, with the dangerous escape being a balance of optimizing for max exit speed as the banked curve flattens, i.e. loosing grip/surface at one and same time at critical point being near the wall, while accelerating already at high speed, getting further interesting with tire wear.

So excellent and rewarding on a completely other level than classic Monza IMO.
 
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Versions of Riverside always seem to suffer from lack of pit boxes, 24 boxes in this version. The NASCAR race in 1988 had a full field of 43 cars, IMSA in 1985 and 1986 had 59 cars and 56 cars respectively
Can always commission a version to your liking, since this top quality free one is not up to your standards :)
 
Versions of Riverside always seem to suffer from lack of pit boxes, 24 boxes in this version. The NASCAR race in 1988 had a full field of 43 cars, IMSA in 1985 and 1986 had 59 cars and 56 cars respectively
I figured that would be the reason of course, it is a tiny pit lane , the mod for 32 boxes just sticks the boxes in the middle of the pitlane since cars in pits just pass thru each other. Even so Papyrus NASCAR 2003 does 36 pit boxes , easier to get over view of pits filled with cars on AC than NASCAR 2003 though to try to see the differences. I think N2003 has smaller boxes but not sure. Even with just 24 boxes this is a top level AC track just like all Lilski tracks
 
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I figured that would be the reason of course, it is a tiny pit lane , the mod for 32 boxes just sticks the boxes in the middle of the pitlane since cars in pits just pass thru each other. Even so Papyrus NASCAR 2003 does 36 pit boxes , easier to get over view of pits filled with cars on AC than NASCAR 2003 though to try to see the differences. Even with just 24 boxes this is a top level AC track just like all Lilski tracks
The 4 star review on a project of that quality is a bit of stinger tho... just saying
 

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