Hriston
Dungeon Master of Middle-earth (He/him)
In the situation as described in the OP, any characters with a STR of at least 10 and a speed of at least 30 feet would have enough movement to clear the gap and land on the very edge of the opposite side.
If the gap was any farther away, or if a character's speed was less than 30 feet, they could end their turns mid-jump, but they would still need the minimum STR to make the jump.
If the gap was any farther away, or if a character's speed was less than 30 feet, they could end their turns mid-jump, but they would still need the minimum STR to make the jump.