If you want to drag race at olds, camp at the washes or on sand highway near the store. Wash 4-5 is a straight shot 15 min ride to olds on a bike. Or drive in to olds from the wash in a truck pulling bikes is the best way for drag bikes. By truck its 20-30 min from the store to olds.
From this side of the dunes, you can get to all the best dunes and olds hill.
If you camp at gecko rd and want to race at gecko flat drags. And tons of dunes as well. From the store/washes to gecko rd is about a 15 drive in a vehicle. Sand highway runs along side the highway. About a 40 min ride on a duner depending how fast you ride.
I prefer the washes, harder packed if you have an rv, way closer to olds hill, closer to china wall and huge dunes etc..
If you plan to dune bring ALOT of fuel. You can do 10gal a day easy on a banshee if you go on a few trips.
If racing, olds is usually whooped and chopped to hell. Not sure if someone grades it, usually not. So good luck going fast there. Also rangers are everywhere busting people for anything
All in all, go to Dumont for prez weekend. 1000 times better. In all ways possible.