1. Events
    Schedule 

2. Qualification
    Swimming – individual events  Swimming – relay events  Open-water swimming 

3. Participation
    Participating nations 

4. Medal summary
    Medal table  Men's events  Women's events  Mixed events 

5. References

The swimming competitions at the 2020 Summer Olympics in Tokyo will take place from 25 July to 2 August at the Olympic Aquatics Centre. The women's 10 km open-water marathon will be held on August 5, with the men's race happening a day later (August 6) at the Odaiba Marine Park.

Swimming will feature a record total of 37 events (18 for each gender and 1 mixed), with the addition of the men's 800 m freestyle, women's 1500 m freestyle, and the mixed 4×100 m medley relay.

Events

Swimming in 2020 will feature a total of 37 events (18 each for men and women and 1 mixed event), including two 10 km open-water marathons. This is slight increase from the 34 events contested in the previous Olympic Games. The following events will be contested (all pool events are long course, and distances are in metres unless stated):

• Freestyle: 50, 100, 200, 400, 800, and 1,500;
• Backstroke: 100 and 200;
• Breaststroke: 100 and 200;
• Butterfly: 100 and 200;
• Individual medley: 200 and 400;
• Relays: 4×100 free, 4×200 free; 4×100 medley (men's, women's, and mixed)
• Marathon: 10 kilometres

Schedule

Unlike the previous Olympics, swimming program schedule will occur in two segments. For the pool events, prelims will be held in the evening, with semifinals and final in the following morning session, spanning a day between semifinals and finals in those events with semifinals. The shift of the normal morning prelims and evening finals (to evening prelims and morning finals) will occur for these Games because of the prior request made by US broadcaster NBC (due to the substantial fees NBC has paid for rights to the Olympics, the IOC has allowed NBC to have influence on event scheduling to maximize U.S. television ratings when possible; NBC agreed to a $7.75 billion contract extension on May 7, 2014, to air the Olympics through the 2032 games,^[1] is also one of the major sources of revenue for the IOC),^[2] so that the finals from the event could be shown live in the United States.^[3][4]

M = Morning session, starting at 10:30 local time (01:30 UTC). N = Night session, starting at 19:00 local time (10:00 UTC).

Qualification

Swimming – individual events

Swimming – relay events

Each relay event features 16 teams, composed of:^[5]

• 12: the top-12 finishers at the 2019 World Championships in each relay event.
• 4: the 4 fastest non-qualified teams, based on times in the 15-months preceding the Olympics.

Open-water swimming

The men's and women's 10 km races featured 25 swimmers:^[5]

• 10: the top-10 finishers in the 10 km races at the 2019 World Championships
• 9: the top-9 finishers at the 2020 Olympic Marathon Swim Qualifier
• 5: one representative from each FINA continent (Africa, Americas, Asia, Europe and Oceania).
• 1: from the host nation (Japan) if not qualified by other means. If Japan already contained a qualifier in the race, this spot had been allocated back into the general pool from the 2020 Olympic qualifier race.

Participation

Participating nations

Japan, as the host country, receives guaranteed quota place in case it would not qualify any qualification places.

Medal summary

Medal table

Men's events

Women's events

Mixed events

References

• Locally Hausdorff space
• Locally integrable
• Locally integrable function
• Locally metrizable space
• Locally nilpotent
• Locally nonsatiated
• Locally optimal
• Locally path connected
• Locally pathwise-connected
• Locally Riemannian symmetric space
• Locally ringed space
• Locally simply connected
• Locally simply connected space
• Locally small category
• Locally symmetric
• Locally symmetric space
• Locally symmetric variety
• Locally trivial
• Locally uniformly convergent
• Locally weighted regression
• Local Malay
• Local Management Agreement
• Local martingale
• Local Matters
• Local maxima