The route 66 site has you penned in for saturday. Here's their event description:
DIALED-IN THURSDAY
Thu., June 28 - Kids ages 12 and younger are FREE. Sportsman drag racing's elite converge on Route 66 Raceway from throughout the country. All day Thursday, racers are wrenching on their cars, qualifying and getting "dialed-in" for the big race!
FRIDAY NIGHT ON FIRE
Fri., June 29 - Friday night qualifying will conclude with an explosive finale, featuring fire breathing jet cars! NITRO & JETS will light up the night sky!
SATURDAY NIGHT NITRO & NOSTALGIA
Sat., June 30 - Relive drag racing's glory days with a classic match race finale featuring the Chi-Town Hustler Nostalgia Funny Car on Saturday night! Enjoy todays stars and historys greatest, with Saturday Night Nitro & Nostalgia!
CHAMPIONSHIP SUNDAY
Sun., July 1 - Kick-off the most prestigious day of all with FREE Parking, a morning track walk, pre-race access, winners circle access and more! This why the racers converge on Route 66 Raceway, to do battle and crown champions!
I like that they don't make you pay to park sunday! That's so sweet of them.