Yeah, if I had to pick an athletics event with the most similar demands, I would say 800m for midfielders and 400m for most other positions.
It’s still a fair bit different though as you are generally running for around 20-100m at close to full speed followed by periods of slower running / then followed up by another burst at close to full speed. For this reason I think its good to also include some conditioning work involving short runs with short rest periods.
For example at a recent training session we did the following conditioning session after our ball work:
20x20m, 15x40m, 10x80m, 8x120m
The rest periods were - jog back between reps and 3-5 minutes between sets (with pushups etc done between sets).
Yeah I’m Australian. I play in a league in regional Victoria.
Is your team made up of mostly expat Aussies, or mostly Americans who have taken up the sport? If it’s the latter then you did pretty well to come close in two of the games, as it’s not an easy sport to pick up if you didn’t grow up playing it.