Competition days are June 20-24
Pool will be open for warm-up on Wednesday, June 19, from 2 p.m. to 6 p.m.


IU Natatorium
901 W New York St
Indianapolis, IN 46202

Hosted By

Meet host: IU Natatorium, Indianapolis Sports Corp., and Indy Aquatic Masters

Have Questions?

Please contact the National Office at or 941-256-USMS (8767). 


The Indiana University Natatorium is located on the campus of IUPUI in Indianapolis. The spectator seating capacity is 4,700 with ample deck seating. The main competition pool will be divided into two-25 yard pools that are eight lanes wide. The diving well is 25 yards by seven lanes wide and the instructional pool will be divided into two-25 meter pools that are six lanes wide. The diving well and instructional pool will be open for continuous warm-up and cool-down during all sessions of the championships. Competitor lane lines are used in each of the three pools. Colorado is the official time system and Daktronics the official video board of the Natatorium.

Additional Places to Swim During Olympic Trials

Swimmers and attendees looking to stay in the water during Trials prior to the start of Spring Nationals can browse this list of over 10 additional pools around the Indianapolis area.

Swimmers can drop-in to an Indy Aquatic Masters workout in the lead up to the start of the meet. Register for a drop-in here.

Entry Deadlines and Surcharge

Online entries are now open will be accepted between the below dates and will close at 11:59 p.m. Pacific, on the last day of the entry period. Fees are $8 per individual event, plus a surcharge per swimmer. The surcharge varies according to date of entry:

January - March 5 at 11:59 p.m. Pacific: $80 surcharge*
March 6 - May 28 at 11:59 p.m. Pacific: $100 surcharge*

Refund requests must be made to the National Office at by June 4. No refunds will be given for events not swum.

Relay-only swimmers must enter and pay the meet surcharge by the May 28 entry deadline. See the relay page for full details.

If you cannot enter online, call 941-256-USMS (8767) between 9 a.m. and 4 p.m. Eastern Time, during the online entry periods above, to provide your entry information. A member services representative will complete the entry for you. Please have your desired events, times, and credit card information available.

National Qualifying Times/Number of Events/Sixth Event

Competitors may enter up to three individual events without meeting the national qualifying times, or a maximum of six events if they meet the NQTs (i.e. have swum a time equal to or better than the NQTs during the past three years). Exception: Competitors entering the 1650 freestyle must meet the NQT.

All swimmers are limited to three individual events per day. If the meet is deemed too large, an athlete’s sixth event will be dropped. Swimmers entering six events must indicate which event is to be dropped in case the timeline is too long. No refunds will be given if the sixth event is dropped. A decision on the sixth event will be announced at by June 1, 2024.

If a swimmer enters an event with a time significantly slower or faster than that swimmer's recorded time in the previous three years, the Championship Committee may, after a discussion with the swimmer, change the seeded time to a realistic time.

If attendance is high, entries MAY be capped for events 200-yards and longer to ensure the timeline is manageable for volunteers and officials, as well as for swimmers who plan to attend finals sessions for the 2024 U.S. Olympic Team Trials – Swimming.

A waitlist will be posted once capacity is reached for the distance events. If we have the ability to add swimmers to distance events after the meet is seeded in early June, entries will be added in the order received from the waitlist. Swimmers must have entered the meet by the May 28 entry deadline in order to be considered from the waitlist. Swimmers should enter up to the maximum number of events desired. The waitlist form will include which event to swap if the swimmer has entered the maximum number.

Eligibility and International Swimmers

Participants must be registered Masters swimmers and at least 18 years of age as of June 19, 2024. Swimmers turning 18 after the meet entry deadline and by June 19, 2024, must enter the meet by the May 28 entry deadline and register for USMS either before or on June 19, 2024.

If a swimmer wishes to affiliate with a Masters club, the club and swimmer must both be registered with the same Local Masters Swimming Committee (LMSC). If there are questions about affiliation, the swimmer will be entered with the affiliation “UC” (Unattached).

International entries are subject to verification and may require additional documentation. Please submit a copy of your Masters Registration card/letter from your governing body to Verification is required at the time of online entry. If you do not present verification, you will not be permitted to swim in the competition.

Age Groups

Age for the meet is determined as of June 24, 2024, except for 18-year-olds, who must be 18 by June 19, 2024. Age groups for individual events: 18–24, 25–29, 30–34, 35–39 … (five-year increments as high as necessary). Relay events: 18+, 25+, 35+, 45+, etc. (10-year increments as high as necessary, determined by the age of the youngest relay member).


Prior to arriving at the facility, all participants must complete a form which includes a liability waiver and emergency contact information. The form will be emailed one week prior to the event and replaces the paper waiver used in previous years. Swimmers can then pick up goody bags upon arriving at the facility. Registration will be held at the IU Natatorium on June 19, 2024, from 3 p.m. to 7 p.m., and on all other days from 6:30 a.m. through the end of competition.


Women’s heats will precede men’s heats for each event, except that women’s and men’s heats may be seeded together for the 400 IM, 1000, and 1650 freestyle events.

The 1650 and 1000 freestyle events may be seeded slowest to fastest by entry time, regardless of age.

The 400 IM and 500 freestyle may be seeded slowest to fastest by entry time, regardless of age.

The 200-yard events may be deck seeded and may be seeded by entry time, regardless of age, for each sex.

All 50 and 100 events will be pre-seeded by age group, with the oldest age groups first, slowest to fastest within each group.

All seeding decisions will be announced at by June 1, 2024.

Distance Events

Swimmers may enter either the 1000 or 1650 freestyle, but not both.  All swimmers entering the 1650 free must meet the NQT. Swimmers will need to supply their own counter (teammate, coach, etc.) for all distance events.

Event Sanction

Sanctioned by the Indiana LMSC for USMS Inc. Sanction Number 164-S001.

The length of the competition course is in compliance and on file with USMS in accordance with articles 105.1.7 and 106.2.1, but as a bulkhead course, is subject to length confirmation. Eligibility of times for USMS Top 10 and records will be contingent on verification of bulkhead placement.

The primary timing system will be automatic timing. Times from this competition will be eligible for USMS records and Top 10 consideration.

Per rule 105.1.2, the 2023-24 USMS Top Ten short course yards season will be extended to include times from 2024 USMS Spring Nationals. The 2023-24 season will end June 24 rather than May 31. 

Check-In Requirements and Deadlines

Swimmers must check in for events 400 yards or longer. Check-in will also be required for all the 200s if it is determined that deck seeding is necessary.

Check-in will be available on the event page available starting Monday, June 17. A link will be sent in an email to all swimmers. If you need assistance, please email or visit the Solutions Table on-site near Registration during the hours of the meet. 

The deadline to check in is 7 p.m. the night before the event is contested. Failure to check in by the following deadlines will result in the swimmer being scratched from the event and the swimmer will not be permitted to swim that event at another time. 

Heat sheets for deck seeded events will be published online by approximately 8 p.m. each evening. 

Check-in Deadline Event Online Check-in
Wednesday, June 19 500 freestyle (women) Mon. 7 a.m. - Wed. by 7 p.m.
Thursday, June 20 500 freestyle (men) Mon. 7 a.m. - Thurs. by 7 p.m.
Saturday, June 22 400 IM Mon. 7 a.m. - Sat. by 7 p.m.
Sunday, June 23 1000 and 1650 freestyle Mon. 7 a.m. - Sun. by 7 p.m.

*All times are Eastern Time. If the 200 events are deck seeded, then their check-in deadlines will be 7 p.m. on the day prior to the event.

Meet Roster

A real-time meet roster including name, age, sex, and club is available here. Please verify your information and contact with any concerns by May 28, 2024.

Heat and Psych Sheets

Psych sheets for all individual events will be available on the website on or about June 4, 2024. 

Heat sheets for pre-seeded events will be available online around June 15, 2024. Heat sheets for deck-seeded events will be posted at various places around the pool deck and on Meet Mobile and SwimPhone, once the events have been seeded.

Meet Start Times 

The competition will start at 8 a.m. every day unless it is determined that the timeline will go too late into the day; then competition may start as early as 7:30 a.m. on any day. Meet start times will be announced at by June 11.

Warm-up Times and Procedures

The competition pool will be open for warm-up on Wednesday, June 19, 2024 from 2-6 p.m. On competition days, the competition pool will be open from 6:30 a.m. until 7:50 a.m. and the primary warm-up pool will be available from 6:30 a.m. until the conclusion of the final event each day. The competition pool will also be open for warm-up for 30 minutes following the last heat of the last event Thursday-Monday. On June 20 the competition pool will remain open until 5 p.m. or 30 minutes following the end of competition, whichever is later.

Swimmers must enter the pool feet first in a cautious and controlled manner. No diving or backstroke starts will be allowed, except in designated sprint lanes. A few lanes will be designated as one-way sprint lanes during the pre-meet warm-up sessions in the competition pools only. Any swimmer who acts in an unsporting or unsafe manner within the swimming venue may be considered for appropriate action or penalty by the referee (rule 102.13.3). Swim equipment is not allowed in the competition or warm-up pools. This includes pull-buoys, kickboards, fins, hand paddles, snorkels, etc.


Any swimmer failing to report to the proper lane in the correct heat of an event will be scratched from that event and will not be permitted to swim that event at another time. Scratches will be accepted through June 4, 2024.


All relays must be entered online. Swimmers may enter relays until 7 p.m. on the day before the relay is scheduled. See the Relay Information page for complete information.


Swimmers in individual events will be awarded points for first through tenth places as 11-9-8-7-6-5-4-3-2-1, respectively. Relays will be awarded double points for first through tenth places as 22-18-16-14-12-10-8-6-4-2, respectively.

Club Scoring

Club scoring will be tabulated in two categories (regional clubs and local clubs) and three divisions (men, women, and combined). Mixed relays score points only in the combined division.


Medals will be awarded for first through tenth places in each age group, for all events. A U.S. Masters Swimming National Champion patch will be given to each individual and relay-team member for the first event won. Swimmers winning more than one event may purchase additional patches. Unclaimed awards will not be mailed unless arrangements are made at the meet. There will be a charge for mailing awards. Club awards will be presented to the top 10 clubs in the local club division and top five clubs in the regional division.

Final Results

The complete results, including splits, will be posted at 

Split Notification

Final results will indicate splits for all swims (excluding pad malfunctions). Splits will be recorded for all swimmers and submitted for records and Top 10 consideration, for initial distances of all individual events (except for backstroke) and for all relay lead-off splits. Therefore, swimmers need not submit split requests for those events. Split requests are required for initial distance(s) of an individual backstroke event. The swimmer is responsible for picking up the Split Notification Form from the administrative official, filling it out, and presenting it to the administrative official prior to the swim. Automatic split times will be submitted for USMS Top 10, however automatic split times from individual events will not automatically appear in the USMS event results database. If you would like a split time to be added to the event results database, please email your request after the meet to

Time Verification (SWIMS)

Swimmers wishing to have times entered into SWIMS (USA Swimming’s times database) must complete a form, obtained from the administrative referee at the meet, prior to the swim.

Hearing Impaired Start Assistance

Any athlete with a hearing impairment may request starting assistance from the meet referee.  The request must be made prior to the start of the meet. If portable strobes are available, one may be located in a manner to provide a visual aid. Otherwise, another appropriate method may be employed to visually assist the affected swimmer. Please contact by June 24, 2024 if you require this assistance.

Service Animals

Animals other than service animals will not be permitted on deck at the venue.