Just Cause

I did this after 3 story missions and 50 side missions done. I had 2 races available then and the closest one was 'Race 6' between Isla de la Asuncion and Provincia de Rio Negroa. Just go through the 10-15 checkpoints. Go through traffic and don't flip your car or you'll need to go back and restart. I had cops after me but they were behind me most of the race.