Historical clue formulations

• Many a charity run — 2025-01-04
• Running event — 2017-01-13
• Many a charity run — 2016-05-20
• Long race, in brief — 2016-03-27
• Piece of cake for a marathoner — 2006-11-17
• It's no marathon — 2006-05-13
• Fun race — 2005-01-30
• Race of about 6.2 mi. — 2004-12-14
• Certain race ... or a cryptic title to this puzzle — 2004-01-08
• Lengthy footrace — 2003-08-19
• Race much shorter than a marathon — 2003-04-23
• Certain race, informally — 1999-09-30
• Common race — 1999-08-05
• Popular race — 1996-12-18
• Six-mile-plus run — 1994-01-29