The target may still choose which direction they're going, just so long as they're running at full Move.

This is a Wizard's Guild restricted spell. Members may learn it at no cost. It was created accidentally by Caroissa (a member of the Wizard's Guild) while attempting to research a similar spell to give the target great running endurance.

Affliction [33] 
    Disadvantage [+15%] 
        Severe Delusion [-15] 
            "I must run at full Move each turn!" 
    Extended Duration (Permanent) [+150%] 
    Malediction (As Regular Spell) [+100%] 
    Based on Activation Roll [+5%] 
    Magical [-10%] 
    Spell Components [-30%] 
        Must say "run" in Latin 
        Must gesture with hands 
        Must hold a drop of sweat collected from a running humanoid 
Level 2 [38] 
    Increase Malediction to Speed/Range table [+50%] 
Level 3 [43] 
    Add Area Effect (2 yard radius) [+50%] 
Level 4-7 [48/53/58/63] 
    Increase Area Effect by 1 step [+50%]