Today is the longest day in Auto Racing, with the Indianapolis 500, dubbed the “Greatest Spectacle in Auto Racing,” at 12 noon Eastern starting the day. Then the longest race on the NASCAR schedule, the Coca-Cola 600, gets underway at 5:30 PM Eastern. All told, the final checkered flag might not fall until close to 11 PM Eastern. Here is a rundown of both races:

INDIANAPOLIS 500

Where: Indianapolis Motor Speedway

When: Sunday, May 26 at 12 p.m. ET

Watch: ABC

Live Stream: LiveStream.com

Defending Champion: Dario Franchitti

Pole Winner: Ed Carpenter (228.762 mph)

Weather: 68 degrees with a 40% chance of rain (from The Weather Channel online)

Storylines: We have a chance of seeing history made with Dario Franchitti (starting 17th today) and Helio Castroneves (starting 8th today) moving into a tie for the all time winningest drivers at The Brickyard, but they do have some tough competition in James Hinchcliffe (starting 9th today; 4th in the IndyCar standings) and Scott Dixon (starting 16th today; 5th in the IndyCar standings) as well as Takuma Soto (starting 18th today; leading the IndyCar standings) all with a chance to hoist the Borg-Warner trophy and have a drink of milk in the winner’s circle, then kiss the bricks at the start/finish line. ESPN the Magazine’s Lewis Francke posted on Twitter that Marco Andretti (starting 3rd today) is the favorite to win at Vegas, followed by Ed Carpenter (starting on the pole today) and Dixon.

 Coca-Cola 600

Where: Charlotte Motor Speedway in Concord, N.C.

When: Sunday, May 26 at 6 p.m. ET

Watch: Fox

Live Stream: NASCAR RaceView

Weather: 55 degrees with a 10% chance of rain (from The Weather Channel Online)

Defending Champion: Kasey Kahne

Pole Winner: Denny Hamlin (195.624 mph)

Storylines: The Coca-Cola 600 is always one of the most anticipated races of the year because it is also the longest. Jimmie Johnson () is the 5-time NASCAR Sprint Cup champion and has not won this race since 2005. Johnson, Kasey Kahne, and Jeff Gordon are the only drivers with 3 Coca-Cola 600 wins. This race could also be the turning point for such drivers as Kurt Busch and Tony Stewart. It is also interesting to see how Danica Patrick (who was a fixture at the Indy 500 until last year) will fare in this race. Denny Hamlin also need a good race as he sat out 4 races earlier due to injury and sits 26 in the standings.

(h/t Bleacher Report [Coca-Cola 600 and Indianapolis 500])