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With Katie Ledecky set on making history and Regan Smith looking to have a breakout Olympics, there are plenty of storylines to follow in the pool in Tokyo. 

But it won’t be an easy battle for Team USA in Tokyo, as other international swimmers have made some noise in recent months — including Ariarne Titmus and Kaylee McKeown.

There are also a few new events this time around, including the 1500m freestyle and mixed medley relays.

Here’s when Ledecky, Smith and the rest of Team USA is set to face off in the pool (all times ET):

Saturday, July 24: Prelims begin at 6 a.m.; Semifinals/Finals begin at 9:30 p.m.

  • Prelims: 400m IM, 100m butterfly, 4x100m freestyle relay
  • Semifinals: 100m butterfly
  • Finals: 400m IM, 4x100m freestyle relay

Sunday, July 25: Prelims begin at 6 a.m.; Semifinals/Finals begin at 9:30 p.m.

  • Prelims: 100m backstroke, 100m breaststroke, 400m freestyle
  • Semifinals: 100m breaststroke, 100m backstroke
  • Finals: 100m butterfly, 400m freestyle

Monday, July 26: Prelims begin at 6 a.m.; Semifinals/Finals begin at 9:30 p.m.

  • Prelims: 200m freestyle, 200m IM, 1500m freestyle
  • Semifinals: 200m freestyle, 200m IM
  • Finals: 100m backstroke, 100m breaststroke

Tuesday, July 27: Prelims begin at 6 a.m.; Semifinals/Finals begin at 9:30 p.m.

  • Prelims: 200m butterfly 
  • Semifinals: 200m butterfly
  • Finals: 200m freestyle, 200m IM, 1500m freestyle

Wednesday, July 28: Prelims begin at 6 a.m.; Semifinals/Finals begin at 9:30 p.m.

  • Prelims: 100m freestyle, 200m breaststroke, 4x200m freestyle relay
  • Semifinals: 100m freestyle, 200m breaststroke
  • Finals: 200m butterfly, 4x200m freestyle relay

Thursday, July 29: Prelims begin at 6 a.m.; Semifinals/Finals begin at 9:30 p.m.

  • Prelims: 800m freestyle, 200m backstroke, Mixed 4x100m medley relay
  • Semifinals: 200m backstroke
  • Finals: 200m breaststroke, 100m freestyle

Friday, July 30: Prelims begin at 6 a.m.; Semifinals/Finals begin at 9:30 p.m.

  • Prelims: 50m freestyle, 4x100m medley relay
  • Semifinals: 50m freestyle
  • Finals: 200m backstroke, 800m freestyle, Mixed 4x100m medley relay

Saturday, July 31: Prelims begin at 6 a.m.; Semifinals/Finals begin at 9:30 p.m.

  • Finals: 50m freestyle, 4x100m medley relay

Tuesday, August 3: Open water 10km begins at 5:30 p.m.