Accelerate

Coose up to three willing creatues within range, which can include you. For the duration of the spell, each target's walking speed is doubled. Each target can also use a bonus action on each of its turns to take the Dash action, and it has advantage on saving throws.

At Highter Levels. When you cast this spell using a spell slot of 4th level or higher, you can affect one additional creature for each slot level above 3rd.