Historical clue formulations

• Works out, say — 2026-04-15
• Preps for a sports competition — 2025-05-26
• – — 2024-01-17
• See 2-Down — 2018-09-25
• Drills — 2016-07-16
• They're on track — 2005-05-15
• Subway vehicles — 2002-10-14
• Some bullets — 2002-04-26
• Expresses, maybe — 2001-08-26
• Track group? — 2001-07-01
• Track team? — 2000-11-12
• Choo-choos — 2000-06-26
• Some have diners — 2000-04-16