Historical clue formulations

• At the absolute back of the pack — 2025-04-11
• Like this clue among the Acrosses — 2021-04-17
• Bringing up the rear — 2016-09-25
• Finishing eighth out of eight, say — 2016-05-30
• Trailing the field — 2004-10-22
• After everyone else — 1998-11-27