Longstrider

1st-Level Transmutation Spell (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

A creature has a Speed, which is the distance in feet the creature can cover when it moves on its turn. See also Climbing, Crawling, Flying, Jumping, Swimming and Combat.

Special Speeds. Some creatures have special speeds, such as a Burrow Speed, Climb Speed, Fly Speed, or Swim Speed, each of which is defined in this glossary. If you have more than one speed, ch ... [more]

increases by 10 feet until the spell ends.

At Higher Levels: You can target one additional creature for each spell slot level above 1.

Source: Player's Handbook, p. 293