I popped this during the first race of the Throttle Series in the first League.
I used the Phoenix with no upgrades (as i hadn't unlocked any).
It took a few tries but what worked for me was taking the left at the highest point (after going uphill) quite tight and then after passing through the next checkpoint
I would go off the left hand side a little after the gate, near where there is a jutting peice of concrete before after the first 2 but before the last 2 lamposts (if they are still standing) and this gave me a nice line towards the start/finish gate.