"Once we get into the groove, we're kind of like long-distance runners - that adrenalin kicks in for me and I just keep running - and I don't stop!"

In this quote, Keith Urban is comparing himself to a long-distance runner when it pertains to carrying out on phase. He discusses that when he enters the rhythm and circulation of his performance, it's like a runner striking their stride. The adrenaline rush he experiences fuels him to keep going and he doesn't wish to stop. This shows his passion and dedication to his craft, as he has the ability to press through any difficulties or fatigue and continue to offer his all. It also highlights the enjoyment and energy that includes performing, and how it can be a relentless rush for him.