In Oregon you are not allowed to drive too much at any given time if you are testing your physical endurance.
811.125 Speed racing on highway; penalty.
(1) A person commits the offense of speed racing on a highway if, on a highway in this state, the person drives a vehicle or participates in any manner in any of the following in which a vehicle is involved:
(a) A speed competition or contest.
(b) An acceleration contest.
(c) A test of physical endurance.
(d) An exhibition of speed or acceleration.
(e) The making of a speed record.
(f) A race. For purposes of this paragraph, racing is the use of one or more vehicles in an attempt to outgain, outdistance or prevent another vehicle from passing, to arrive at a given destination ahead of another vehicle or vehicles or to test the physical stamina or endurance of drivers over long distance driving routes.
(g) A drag race. For purposes of this paragraph, drag racing is the operation of two or more vehicles from a point side by side at accelerating speeds in a competitive attempt to outdistance each other, or the operation of one or more vehicles over a common selected course, from the same point to the same point for the purpose of comparing the relative speeds or power of acceleration of the vehicle or vehicles within a certain distance or time limit.
(2) The offense described in this section, speed racing on a highway, is a Class A traffic violation and is applicable on any premises open to the public.
[1983 c.338 ï¿½568; 1985 c.16 ï¿½287]