B354, since it is half the speed of Sprinting (which is 120% move) it is 60% move. Example is Move 7 doing 4.2 yards/second.
It involves a HT check to avoid FP loss every 60 seconds instead of every 15.
No data exists for how often to make these rolls when moving at speeds in between these, or at slower than PR, such as someone who moves full Move every turn but not Sprinting.
B426 has Hiking expend a minimum of 1 FP per hour, B351 says someone moves 10 x Move miles per day (encumbrance, injury and exhaustion can reduce move)
10xMove per 24x60 minutes = Move per 24x6 minutes, or Move miles per 144 minutes.
5280 x Move feet per 144 minutes is 36.(6) / 36 ⅔ x Move feet/minute.
So someone with average Move 5 moves 183⅓ feet/60 seconds will Hike at a pace of 3.0(5) feet per second, IE just over 1 yard, equal to a step. 2 steps per second is not hiking!