2005: Three-year-old season

Deep Impact won over Admire Japan by two lengths in Kikuka Sho on 23 October 2005, thereby becoming the first horse since Narita Brian 11 years earlier to complete the Japanese Triple crown. He also became the first unbeaten Japanese Triple crown winner since Symboli Rudolf 21 years earlier, but in his next race, Arima Kinen, Deep Impact was defeated by Heart's Cry to suffer his first loss in his racing career.

2006: Four-year-old season

In 2006, Deep Impact returned to the turf with an easy victory in the Grade 2 Hanshin Daishōten.

Then he won the spring Tenno Sho, setting a new world record for a 3200-meter race in the time of (3'13"4)

He followed up with a victory in the Grade 1 Takarazuka Kinen over 2200m.

In October, he raced in France's most prestigious race, the Group 1 Prix de l'Arc de Triomphe over 2400m. He was the heavy favourite for the race, and 1,587,263 € (about $1,238,000) was bet on him in France (especially by many of the Japanese fans that traveled to the racecourse). However he only finished third.

Two weeks later, news from France Galop revealed Deep Impact was positive tested to Ipratropium.^[2] Connections announced the colt would retire to stud after that season in a syndication deal worth 5.1 billion yen.

Deep Impact then won the Japan Cup and Arima Kinen before being retired for stud.

Tenno Sho 2006 on April 30

Wins:

• 2005 Hochi Hai Yayoi Sho (Domestic G2), Nakayama Turf 2000m
• 2005 Satsuki Sho (Japanese 2000 Guineas) (Domestic G1), Nakayama Turf 2000m
• 2005 Tokyo Yushun (Japanese Derby) (Domestic G1), Tokyo Turf 2400m
• 2005 Kobe Shimbun Hai (Domestic G2), Hanshin Turf 2000m
• 2005 Kikuka Sho (Japanese St. Leger) (Domestic G1), Kyoto Turf 3000m
• 2006 Hanshin Daishoten (G2), Hanshin Turf 3000m
• 2006 Tenno Sho (Spring) (Domestic G1), Kyoto Turf 3200m
• 2006 Takarazuka Kinen (G1), Kyoto Turf 2200m
• 2006 Japan Cup (G1), Tokyo Turf 2400m
• 2006 Arima Kinen (Domestic G1), Nakayama Turf 2500m

Notable progeny

c = colt, f = filly

• 
  Tosen Ra (2008)
• 
  Danon Shark (2008)
• 
  Real Impact (2008)
• 
  Marcellina (2008)
• 
  Gentildonna (2009)
• 
  Deep Brillante (2009)
• 
  Spielberg (2009)
• 
  Verxina (2009)
• 
  Joie de Vivre (2009)
• 
  Kizuna (2010)
• 
  Ayusan (2010)
• 
  Lachesis (2010)
• 
  Shonan Pandora (2011)
• 
  A Shin Hikari (2011)
• 
  Harp Star (2011)
• 
  Mikki Isle (2011)
• 
  Marialite (2011)
• 
  Satono Aladdin (2011)
• 
  Tosen Stardom (2011)
• 
  Mikki Queen (2012)
• 
  Real Steel (2012)
• 
  Shonan Adela (2012)
• 
  Danon Platina (2012)
• 
  Makahiki (2013)
• 
  Dee Majesty (2013)
• 
  Satono Diamond (2013)
• 
  Sinhalite (2013)
• 
  Vivlos (2013)
• 
  Jour Polaire (2013)
• 
  Satono Ares (2014)
• 
  Al Ain (2014)
• 
  Ange Desir (2014)
• 
  Danon Premium (2015)
• 
  Keiai Nautique (2015)
• 
  Wagnarian (2018)
• 
  Fierement (2015)
• 
  Glory Vase (2015)
• 
  Danon Fantasy (2016)
• 
  Gran Alegria (2016)
• 
  Loves Only You (2016)
• 
  Roger Barows (2016)
• 
  World Premiere (2016)
• 
  Danon Kingly (2016)
• 
  Contrail (2017)
• 
  Lei Papale (2017)
• 
  Potager (2017)
• 
  Shahryar (2018)
• 
  Akaitorino Musume (2018)
• 
  Killer Ability (2019)
• 
  Ask Victor More (2019)