On Friday nights, if you get there between 6pm-7pm, the price is $10, that includes general admission and drag racing only.
If you head to the track on a day other than Friday, the price is $10 for general admission and $5 for drag racing.
If you do drifting, it is a lot more expensive ($20+$10).
I think the track only opens on Thurs, Fri, and Sat.
Here is the link to their website:
http://cfracingcomplex.com/
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The track is not too far (only 15 miles in distance) from Olympia, but if you are heading from there to the track, below are directions from mapquest on how to get there:
*You DON"T need to take the highway to get there, it is easier if you just drive through all local roads.*
http://www.mapquest.com/maps?1pn=olympia+high+school&2c=Orlando&2s=FL&2a=201+Parcel+Lane&2pn=central+florida+racing+complex#a/maps/l:Olympia+High+School:4301+S+Apopka+Vineland+Rd:Orlando:FL:32835:US:28.496842:-81.508431:address::1/l:Central+Florida+Road+Crse+LLC:201+Parcel+Ln:Orlando:FL:32824:US:28.41061:-81.37805:address::1/m::9:28.455665:-81.442866:0:::::::::/io:1:1:1:::f:EN:M:/e
1: Start out going NORTH on S APOPKA VINELAND RD/APOPKA VINELAND RD/APOPKA VINELAND RD S/CR-435 N toward LYNCH COURT DR. 0.5 mi Map
2: Make a U-TURN onto S APOPKA VINELAND RD/APOPKA VINELAND RD S/APOPKA VINELAND RD/CR-435 S. 3.9 mi MapAvoid
3: Turn LEFT onto SAND LAKE RD W/SAND LAKE RD W. 4.4 mi MapAvoid
4: Turn RIGHT onto S JOHN YOUNG PKWY/JOHN YOUNG PKWY S/FL-423 S. 2.8 mi MapAvoid
5: Turn LEFT onto CENTRAL FLORIDA PKWY. 2.1 mi MapAvoid
6: Turn LEFT onto ROCKET BLVD. 0.1 mi MapAvoid
7: Turn RIGHT onto CENTRAL FLORIDA PKWY. 0.8 mi MapAvoid
8: Turn LEFT onto COSMONAUT BLVD. 0.2 mi MapAvoid
9: Turn LEFT onto PARCEL LN. 0.0 mi MapAvoid
10: 201 PARCEL LN is on the RIGHT.