Historical clue formulations

• Doesn't go straight, in a way — 2018-01-20
• "Giant" events — 2013-05-10
• Winter Olympics races — 2009-10-08
• Zigzags downhill — 2006-02-14
• Goes downhill — 2003-12-19
• Winter Olympics races — 2001-05-01
• Downhill events — 1995-05-06
• Lillehammer events — 1994-04-22