Longstrider 5e spell

1st-level transmutation · 2024 version below

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

At higher levels

When you cast this spell using a spell slot of 2nd level or higher, you can target one additional creature for each slot level above 1st.

The 2024 Player’s Handbook revised many spells, and the SRD 5.2 carries the new text. What changed from the 2014 version above:

Same level, casting time, range, components, duration and dice.

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.

2024 version from the SRD 5.2. Most tables settle on one edition, so check which one yours uses.