Historical clue formulations

• Formula 1 divisions: Abbr. — 2025-10-11
• E.U. distance units — 2024-01-30
• Tour de France distance units: Abbr. — 2022-09-11
• Autobahn units: Abbr. — 2022-07-20
• Tour de France units: Abbr. — 2021-08-12
• Eur. distance measures — 2017-09-20
• Tour de France units: Abbr. — 2008-08-17
• Tour de France units: Abbr. — 2003-12-14
• Distance abbr. — 2003-08-01
• There are 1.609 in a mi. — 1995-05-12