Run: The best place to run the test is on a 400m track. There you have the least disturbing factors and can determine the actual distance run very accurately. If you do not have access to a running track, the test can also be performed on a flat, straight track. Bike: You can do the test either indoors on your Smarttrainer or outdoors. If you do it indoors, we will provide you with a Zwift protocol that you can ride. Outdoors you should have a suitable track with as little traffic and curves as possible.