Open Water Swim Checklist

An open water swim needs more than a marked course and a start time. You need a confirmed swimming location, a clear safety plan, trained support on the water and accurate participant information. Work through the planning in stages: secure permissions first, then open registration, assign groups and numbers, and prepare the site and equipment before event day. This checklist covers the details that are easy to leave until the last minute, including weather checks, route maps, changing areas, refreshments and finish-line supplies.

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The plan, step by step

Every task with its own sub-checklist, in the order you'll actually need them.

Preparations

Reserve a swimming location
Set the swimming route
2 people
Check permits
Prepare safety plan
2 people
Reserve safety equipment
Publish registration form
Send invitations
2 people
Process registrations
2 people
Collect dietary requirements
Confirm participants
2 people
Assign starter groups
2 people
Assign start numbers
2 people
Distribute the route map
Check the weather forecast
Send participant information
2 people
Confirm reservations
Do the shopping
3 people
Collect materials
3 people
Prepare race numbers
2 people
Prepare catering
3 people
Fill coolers
2 people
Inspect venue
2 people
Set up tents
4 people
Set up tables
3 people
Set up chairs
3 people
Set up the registration table
2 people
Set up the finish area
3 people
Set up the start and finish buoys
3 people
Set out route buoys
4 people
Position safety boats
4 people
Put up route signs
2 people
Set up the first aid area
2 people
Set up the changing area
2 people
Test sound system
2 people
Lay out bib numbers
2 people
Brief volunteers
3 people

Event

Open participant registration
4 people
Hand out race numbers
3 people
Hand out swim caps
2 people
Collect luggage
2 people
Serve coffee and tea
2 people
Give participant briefing
2 people
Set up starting groups
3 people
Start swimming event
3 people
Staff route checkpoint
4 people
Supervise safety boats
6 people
Count participants
2 people
Keep track of finish times
3 people
Hand out finisher medals
2 people
Distribute water and fruit
3 people
Refill drinks
2 people
Serve snacks
3 people
Process results
2 people
Announce the results
2 people
Serve the hot meal
4 people
Clear away dishes
2 people
Collect waste
2 people
Check out participants
2 people

Aftercare

Remove buoys from the water
4 people
Return safety boats
4 people
Remove route signs
2 people
Take down tents
4 people
Clear tables and chairs
4 people
Wash dishes
3 people
Empty the coolers
2 people
Clean the venue
4 people
Dispose of waste
2 people
Sort materials
2 people
Return borrowed items
2 people
Publish results
Register lost and found items
Share participant photos
Send thank-you message

What to bring

Grouped the way you'd shop for it, with quantities.

Furniture

Party tentsqty 3
Foldable tablesqty 8
Folding chairsqty 40
Coat racksqty 2
Clothes racksqty 4
Storage boxesqty 12

Tableware

Reusable cupsqty 150
Platesqty 120
Bowlsqty 100
Cutlery setsqty 120
Coffee cupsqty 80
Serving traysqty 8

Equipment

Coolersqty 8
Kettlesqty 3
Coffee machinesqty 2
Food warmersqty 4
Sound system
Microphonesqty 2
First aid kitsqty 2
Digital thermometersqty 2
Mobile phoneqty 2

Sports equipment

Start and finish buoysqty 4
Route buoysqty 12
Swim capsqty 120
Finisher medalsqty 120
Race bib strapsqty 120
Stopwatchesqty 6
Counting framesqty 3
Life ringsqty 8
Rescue linesqty 4
Paddlesqty 8
Inflatable kayaksqty 4
Waterproof bagsqty 8
Waterproof walkie-talkiesqty 8
Thermal blanketsqty 30

Lighting

LED lampsqty 12
Extension cordsqty 6
Power stripsqty 4

Decorations

Route signsqty 14
Directional signsqty 10
Start/finish banner
Barrier tapeqty 6
Traffic conesqty 20
Ground pegsqty 30

Kitchen

Cutting boardsqty 4
Chef's knivesqty 4
Thermos flasksqty 6
Serving spoonsqty 8
Serving tongsqty 6
Ice packsqty 30
Jerry cansqty 6

Cleaning

Bucketsqty 4
Spongesqty 12
Dish brushesqty 4
Hand broomsqty 3
Trash binsqty 8

Catering

Groceries

Tips

Start with the location, permits and safety plan before publishing registration. Confirm where swimmers enter and exit the water, how the route is marked, and how rescue equipment and support craft will be positioned.
Send participant information several days before the swim, including the route map, start group, number, arrival instructions and what to bring. Ask for dietary requirements during registration so catering is not a last-minute guess.
Check the weather forecast at least 48 hours before the event and define a clear go/no-go decision time. Recheck conditions on the morning, especially wind, water visibility and temperature, before setting the course.
Prepare separate waterproof storage for race materials, registration items and safety equipment. Keep swim caps, race bib straps, stopwatches and participant lists dry and accessible rather than packed in general storage boxes.
Set up tents, tables, chairs, changing and storage areas before swimmers arrive. Fill coolers and test the sound system and microphones early enough to replace missing batteries or equipment before the briefing.

Frequently asked questions

How far in advance should I plan an open water swim?: Start securing the swimming location and checking permit requirements at least 8 to 12 weeks before the event. Open registration only after the route, safety plan and essential water-safety equipment are confirmed.
What safety equipment do I need for an open water swim?: The plan should include life rings, rescue lines, paddles and support craft such as inflatable kayaks, plus clearly visible start, finish and route buoys. Final quantities depend on the course and participant count, so confirm them with the responsible safety team before event day.
When should I send open water swim participant information?: Send the main information 5 to 7 days before the swim, after registrations, start groups and numbers are confirmed. Include the route map, arrival time, start procedure, safety instructions and any catering or dietary details.
How early should I set up an open water swim venue?: Allow at least 3 to 4 hours for venue setup, including tents, tables, chairs, registration materials, route markers, coolers and the briefing area. Finish the safety inspection and course check before participants begin arriving.

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Every task and item on this page, ready in your own event. Invite people, split the work, and see who has done what.