"Bring the rear" is a common phrase used to describe someone who is coming last in a race or a competition. Antonyms for this phrase could include "lead the front," "take the lead," "be ahead," or "set the pace." These antonyms imply that the person is in first place or leading the group, rather than trailing behind. Other antonyms could include "out in front," "ahead of the pack," or "in the lead." It's important to remember that language is fluid and context-dependent, so the appropriate antonym will vary based on the situation in which the phrase is being used.