No need to run even, you can stay in Zone 2 via walking. Incline on a treadmill makes required speeds quite low (2-3mph for most people). I prefer it since it'

No need to run even, you can stay in Zone 2 via walking. Incline on a treadmill makes required speeds quite low (2-3mph for most people). I prefer it since it's at a pace where you can easily use your phone/browse the web at the same time. Walking is also far more practical given that you walk 99% of the time in modern society. Might as well train for the thing you actually functionally do