Historical clue formulations

• Like Olympic pools — 2026-07-05
• Like Olympic tracks — 2025-02-28
• Like many pools and highways — 2017-07-23
• Like superhighways — 2012-12-02
• Like interstates — 2012-10-23
• Like an Interstate — 2011-04-10
• Like a highway — 2003-01-21
• Like a highway — 1996-09-20
• Like most highways — 1996-03-08
• Like interstates — 1994-04-01