I'm talking about Los Angeles County Raceway. They let Jr Dragsters race. I don't know why I couldn't run a minibike on at least the 1/8. I have full offroad safety gear, so it's not like some yahoo would be going out with only street clothes and a skid lid.
Timing lights are nice for precision, but a stopwatch can get you in the ballpark for E.T. If I go there soon, I'll ask and see what the tech/safety people say.