Couple of different ways you can make it there Greg!
This is probably the most effecient compared to 36/270/70
Cleeek me! :WHY!!!!: But if you want Sans Tollway then:
Take Highway 36 east
Jump on highway 270 east (which will force you onto I-70)
Take I-70 east to pena blvd (airport exit)
Take the Tower road exit
North (left) to 88th avenue
East (left) to second creek raceway
You will most likely have to stop at bobs house
to sign a waiver, his house and the entrance is
located right before the road makes you jog right then left.
Basically about a mile from where you turn onto 88th, right after
where you see the track.