Many racing circuits have different layout variants. Grand Prix circuit, International circuit, National circuit, North Loop, South Loop, Short Course with Chicane, Variant 15a... some even have multiple pit-lanes and paddocks so that they can cater for different layouts simultaneously.
But how often do they all get used?
This question actually came to me when I was trying - unsuccessfully, as it turned out - to find some sort of broadcast/onboard video of an event using Shanghai's West Long variant ahead of Formula E's use of it last weekend. Try as I might I couldn't find any real-world (not sim racing) seres or event which made use of that last chicane which cut out the long back straight. Doesn't mean there isn't one... I just couldn't find any.
And that got me thinking a bit about all the other variants that exist at various tracks. Has anyone used the used the Monza 'Junior Course' in recent years? What about the 'Short Source with Alt T4' at Buddh International? How often has Silverstone's current 'International Circuit' been used?
I mean there are loads and loads... and loads. So I thought it might be kind of fun to make a thread out of it.
To get started, here's a lap of Yas Marina's North Circuit Corkscrew in a Radical SR3