Triathlon checklist: what to arrange and when

A triathlon depends on several parts working at the same time: swim safety, bike and run routes, timing, volunteers and participant communication. Start with the venue, permits and course checks, then open registration and build the race-day plan around confirmed numbers. In the final week, check equipment, weather, water stations and volunteer instructions. This checklist covers 76 planning tasks and 95 items, so small details such as bib sorting, bike pumps and cooled drinks do not get left until race morning.

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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 the course venue
Apply for a permit
Check the swimming water
2 people
Map out the bike and walking route
3 people
Order race numbers
Arrange timekeeping
Open registration form
Send invitations
2 people
Recruit volunteers
2 people
Process registrations
2 people
Send participation confirmations
2 people
Collect dietary requirements
Create volunteer schedule
2 people
Reserve traffic barriers
Set water stations
2 people
Develop safety plan
3 people
Make route map
2 people
Send participant information
2 people
Inspect the course again
3 people
Check material stock
2 people
Sort bib numbers
3 people
Prepare the volunteers briefing
2 people
Check the weather forecast
Do the shopping
3 people
Chill drinks
2 people
Assemble starter packs
5 people
Set out course signs
3 people

Event

Give volunteer briefing
3 people
Inspect the site
4 people
Set out swim buoys
4 people
Set off the swim start
3 people
Set up bike transition area
6 people
Build the transition zone
5 people
Build the finish arch
4 people
Place route arrows
6 people
Set up traffic barriers
6 people
Set up drink stations
6 people
Set up the registration table
3 people
Test time tracking
2 people
Test the PA system
2 people
Set up the first aid station
3 people
Register participants
5 people
Hand out starter packs
4 people
Inspect bicycles
3 people
Check swimming safety
4 people
Guide participants to the start
4 people
Give the signal
2 people
Monitor the swim course
8 people
Guard the transition area
6 people
Supervise the bike course
10 people
Monitor the running course
8 people
Check off participants
3 people
Restock drink stations
6 people
Refill drinks
3 people
Hand out finisher medals
3 people
Serve fruit and snacks
4 people
Check timings
2 people
Publish results
2 people
Present prizes
3 people
Receive the last participants
4 people

Aftercare

Dismantle the finish area
5 people
Remove swim buoys from the water
4 people
Remove route arrows
6 people
Remove traffic barriers
6 people
Collect litter along the route
8 people
Empty trash bins
3 people
Clean the venue
6 people
Sort materials
4 people
Clean equipment
4 people
Return rented materials
2 people
Store leftover groceries
2 people
Send results to participants
2 people
Register lost and found items
Return lost and found items
Collect invoices
Share participant photos

What to bring

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

Furniture

Party tentsqty 4
Registration tablesqty 4
Beer tablesqty 12
Chairsqty 40
Dressing room tentsqty 4
Clothes racksqty 8
Waste binsqty 20

Sports equipment

Swimming buoysqty 10
Lane ropesqty 4
Swimming safety buoysqty 12
Finish ribbonsqty 6
Bicycle racksqty 220
Bib numbersqty 220
Race bib strapsqty 220
Swim capsqty 220
Finisher medalsqty 220
Stopwatchesqty 12
Conesqty 80
Route arrowsqty 100
Kilometer markersqty 30
Round signsqty 12
Bike repair standsqty 2
Bike pumpsqty 6
Spare inner tubesqty 20
Tire leversqty 12
Basic tool kitsqty 4
High-visibility vestsqty 40
Whistlesqty 30
Drink Cups for Stationsqty 1500
Reusable drink cupsqty 300
Water jerry cansqty 20
Coolersqty 12
Fanny packsqty 12
Life ringsqty 6
Rescue linesqty 6
Paddlesqty 4
Emergency lightingqty 12
Flashlightsqty 12
Rain ponchosqty 50
Thermal blanketsqty 30
First aid kitsqty 4
AED
Lanyardsqty 250
Wristbandsqty 300
Prize trophiesqty 12
Start and finish clocksqty 4
Route mapsqty 250
Clipboardsqty 20
Markersqty 30
Waterproof pensqty 30
Measuring tapesqty 4
Barrier tapeqty 20
Cable tiesqty 500
Sandbagsqty 40
Traffic conesqty 60
Traffic barriersqty 80
Starting matsqty 2
Rubber walking matsqty 30
Towelsqty 100

Equipment

Time registration system
Tabletsqty 4
Walkie-talkiesqty 20
Walkie-talkie headsetsqty 12
Mobile chargersqty 12
PA system
Speakersqty 4
Microphonesqty 2
Extension cordsqty 8
Power stripsqty 8
Batteriesqty 60
Portable coolersqty 4

Tableware

Reusable drinking glassesqty 300
Coffee cupsqty 80
Platesqty 100
Cutlery setsqty 100
Serving spoonsqty 8
Thermos flasksqty 8

Kitchen

Kettlesqty 4
Coffee machinesqty 3
Cutting boardsqty 6
Knivesqty 12
Serving plattersqty 12
Cool bagsqty 20
Food containersqty 20

Decorations

Finishing cloth
Buntingqty 12
Dutch flagsqty 6
Directional signsqty 20

Lighting

String lightsqty 8

Cleaning

Cleaning bucketsqty 6
Cleaning clothsqty 30
Mopsqty 6
Broom setsqty 6
Trolleyqty 2

Catering

Groceries

Tips

Confirm the swim venue and water conditions before opening registration. Course distances, entry points and safety arrangements can affect how many places you can offer.
Set a clear registration deadline, then use the final participant count to prepare bib numbers, swim caps, medals, drinks and volunteer positions. Avoid ordering or sorting everything before registrations are processed.
Plan route inspection twice: once after the bike and run courses are fixed, and again shortly before race day. Check signs, cones, kilometre markers, barriers and any points where athletes could take a wrong turn.
Give volunteers a written briefing at least 2–3 days before the race. Include station locations, shift times, emergency contacts, whistles, high-visibility vests and what to do if an athlete needs help.
Keep race-day supplies separated by area: swim, transition, bike route, run route, finish and registration. Chill drinks before the event and place spare tubes, tyre levers, pumps and basic tools where bike problems are most likely.

Frequently asked questions

How far in advance should I organise a triathlon?: Start at least 12–16 weeks before race day. Venue availability, permits, route approvals, volunteer recruitment and timing arrangements usually need to be settled before registration opens.
When should triathlon registration close?: Close registration 7–14 days before the race if you need time to process entries, sort bib numbers, collect dietary requirements and send participation confirmations. Keep a shorter window only if your timing and supply setup can handle late entries.
How many volunteers do I need for a triathlon?: Plan volunteer shifts by course section rather than using one total number. As a starting point, assign at least 2 people to each water station and each major junction, then add separate teams for swim safety, registration, transition, timing and the finish.
How much water and sports drink should I prepare?: Estimate at least 500–750 ml per participant for the course, then add a 10–20% reserve for warm weather, volunteers and spills. Final quantities should be based on the confirmed field size and the number and length of water stations.

Start this plan in Lizzt

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