2011 14th FINA World Championships
July 16–31, 2011
4x200 freestyle Women Relay gold in
United States Team 7:46.14 (28/07/2011)
Missy Franklin (1:55.06)
Dagny Knutson (1:57.18)
Katie Hoff (1:57.41)
Allison Schmitt (1:56.49)

2010 (15–19 December) The 10th FINA World Championships Short-Course (25-meter)
Dubai, United Arab Emirates
400 free
3:57.07 CR

2010 (August 18–22) Mutual of Omaha Pan Pacific Swimming Championships (50m Long Course)
4×200m freestyle relay gold in
United States Team
Dana Vollmer (1:58.05)
Morgan Scroggy (1:57.89)
Katie Hoff (1:58.70)
Allison Schmitt (1:56.57) 

2007 (25 March to 1 April) World Aquatics Championships
Melbourne, Australia
200m individual medley Katie Hoff United States 2:10.13 CR
400m individual medley Katie Hoff United States 4:32.89 WR
4×200m freestyle relay in Team United States
Natalie Coughlin
Dana Vollmer
Lacey Nymeyer
Katie Hoff
7:50.09 WR

2006 (August 17–20) Victoria, British Columbia, Canada
The tenth edition of the Pan Pacific Swimming Championships
200m freestyle gold in
Katie Hoff (USA) 1:58.02 
400m individual medley
Katie Hoff (USA) 4:36.82 CR 
4×200m freestyle relay gold in
Team United States
Natalie Coughlin
Lacey Nymeyer
Dana Vollmer
Katie Hoff 
7:54.62 CR

The 2005 World Aquatics Championships (XI FINA World Championships
Montreal, Quebec, Canada
July 16 to July 31, 2005
200m individual medley Gold: Katie Hoff (USA) 2:10.41 CR July 24
400m individual medley Gold: Katie Hoff (USA) 4:36.07 CR July 31
4×200m freestyle relay  Gold: United States (USA)
Natalie Coughlin
Katie Hoff
Whitney Myers
Kaitlin Sandeno
7:53.70