Longstrider

Source: Player's Handbook

Level 1 Transmutation (Artificer, Bard, Druid, Ranger, Wizard)

Casting Time: Action
Range: Touch
Components: V, S, M (a pinch of dirt)
Duration: 1 hour

You touch a creature. The target’s Speed increases by 10 feet until the spell ends.

Using a Higher-Level Spell Slot. You can target one additional creature for each spell slot level above 1.