For those of you who want to submit a race for future rounds of the championship, here's one track which is a good benchmark of what we're looking for.
We don't necessarily look for only small lap tracks like that, but regarding prop positioning (except the destructible barriers that need to be removed), layout, flow, checkpoint placement it's really well made racetrack.
This one is especially good for the first-person category (1 of the 8 races each round), as you cannot easily hold B for 3rd person while racing in it (it's intense, non-stop turning).
"Dockerz GP 4" Highlights
(GTA 5000 Round 1, Season 3, Jan 31st 2015)