The Thorndon Mile (formally George Adams (Tattersalls) Handicap) is a Group One (G1) Thoroughbred horse race contested over 1,600 metres (one mile) at Trentham Racecourse by the Wellington Racing Club. The race is run on Wellington Cup day, traditionally the last Saturday of January. The purse for this race is NZD$200,000. This race was known as the WRC George Adams Handicap until 1883. It was also known as the Jarden Mile or Jarden Morgan Mile while sponsored by that organisation over the 1984-1991 period. Later sponsors have included Hutt Valley Cartage.