Mine would be:

Sector 1: Silverstone
Sector 2: Spa
Sector 3: Hockenheim
Atmosphere: Sau Paulo
Weather: Spa
Start Time (in your time zone): 19.00

Sector 1 - Spa
Sector 2 - Monza
Sector 3 - Shanghai
Atmosphere - Sau Paulo
Weather - Spa
Start time - 18.00.

Sector 1: Spa
Sector 2: Spa
Sector 3: Spa
Atmosphere: Spa
Weather: Spa
Start Time (in your time zone): 14.00

Had to be done.

Sector 1: Le Mans Sarthe from Dunlop Curve to Indianapolis Corner, no chicanes on the Mulsanne
Sector 2 (to be exasperating to the drivers): Monaco or Pau
Sector 3: Silverstone S1

Atmosphere: Le Mans

Weather: Silverstone

Start time: 00:00, minimal night lighting. So this is a track where you need HEADLIGHTS.

And don't knock me for not mentioning Spa, this popped into my head as I read the topic.

1985 Silverstone.

Sector 1: Interlagos
Sector 2: Suzuka
Sector 3: Valencia
Atmosphere: Monza
Weather: Spa
Start Time (in your time zone): 03.00 (There's something great about early morning F1 races; either the comedown from the pre-race saturday night, or a free TV guranteed, or maybe just feeling that you're being totally hardcore)

I know there are better tracks, Spa, Monza, etc.

But my personal favorite is the Melbourne Grand Prix Circuit at Albert Park.

I dunno if this would link up.

Sector 1: Sector 1 at Silverstone + Stowe & Vale
Sector 2: Sector 1 at Donington (Moto GP)
Sector 3: Sector 2 at Donington (Moto GP)

Atmosphere: Silversone (F1) Donington (Moto GP)

S1 Monza
S2 Abu Dhabi
S3 Indianapolis

This is how it will look like:

Actually that would be a great addition to the calendar; a nice high-speed challenge to replace the void left since Hockenheim's murder. Turn 10 would provide some great overtaking, and also at turn 1 with the run off turn 13.

I miss Indy actually; that was a nice simple track that led to great racing, and had a lot of history too. It was certianly the best new track of the 2000s.

Sector 1: Old Spa: L'eau Rouge, Radillon, Kemmel, Les Combes, Haut de la Cote, Burnenville, Malmedy, Masta Kink.

Sector 2: Nurburgring North Loop: Quiddelbach Height, Flight Place, Foxhole, Mountain Work, Courage Curve, Carousel, High Lookout, Seesaw Man, Little Carousel.

Sector 3: Brands Hatch: Westfield Bend, Dingle Dell, Dingle Dell Corner, Stirling's Bend, Clearways, Clark Corner, Brabham Straight.

Atmosphere: Silverstone, knowledgable, appreciative, partisan but not "Kill the Infidel!"

Weather: typical Eiffel Mountain: intermittent light rain, barely acceptable fog

Start time: 0900 hours. Time for breakfast but no day-long agonizing countdown to green.

Non-F1 tracks are fair game, then?

I want the last corner, main straight and first corner of Mugello, followed up by the start line to the first hard right of Vallelunga, and then just drop off the edge of a mountain, and Eau Rouge it back up to the beginning.

Though I like alg7_munif's suggestion, too...

Sector 1 : Suzuka start/finish through the esses and then the plunge downhill
Sector 2 : Monza through the Lesmos and Ascari
Sector 3 : Indy around the oval

Atmosphere : Imola

Weather : Monaco

Start Time : 7:30 (I'm an early riser)

Image of my track.

http://img203.imageshack.us/img203/9506/mytrack.jpg

I don't know how I would finish it though?

My turn.

Start/Finish Line

Sector One
- Abu Dhabi's turn two-three-four combination
- Spa's Eau Rouge
- Bahrain's turn nine and ten
- Montreal's turn four, five and six

Sector Two:
- Silverstone's Maggotts-Becketts-Chapel sequence
- Istanbul's "Haymaker" (turn eight)
- Spa's Pouhon (Cross-over)
- Sepang's twelve, thirteen and fourteen
- Nurburgring's Michael Schumacher-S

Sector Three:
- Imola's Piratella
- Suzuka's Denger Curves
- Spa's La Source
- Nurburgring's Kumho-Kurve
- Nurburgring's Bit-Kurve
- Suzuka's Esses (Cross-under)

Original circuit in between to link it up

Start/Finish Line

It's probably impossible ... does anyone want to have a shot?

Sector One: Suzuka from starting grid, esses to Hairpin
Sector Two: Spa, Le Combes to Stavelot
Sector Three: Silverstone, Copse, magotts, Becketts, chapel to Stowe