2026 Competition Rules and Regulations in T100 & World Triathlon

World Triathlon & T100 Rules

4. SWIMMING

4.1 General Rules:

a.) Athletes may
use any stroke to propel themselves through the water. They may also tread
water or float. Athletes are allowed to push off the ground at the beginning
and the end of every swim lap. Technical Delegate may authorize to push off the
ground in other sections of the swim course;

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b.) Athletes must follow the prescribed swim
course as outlined in 2.1 a) (xiii);

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c.) Athletes may
stand on the bottom or rest by holding an inanimate object, such as a buoy or
stationary boat. It is forbidden to pull, push or use any inanimate object in a
way which help the athlete progress;

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d.) In an
emergency, an athlete should raise an arm overhead and call for assistance.
Once official assistance is rendered, the athlete must retire from the
competition;

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e.) Athletes may
sportingly maintain their own space in the water:

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(i)
Where athletes make accidental contact in the swim and then immediately
afterwards move apart no penalty will be incurred;

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(ii)The deliberate targeting of another athlete to impede their progress,
gain unfair advantage and potentially cause harm will result in
disqualification and may be reported to the World Triathlon Tribunal for
potential suspension or expulsion;

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(iii)
Where athletes dunk, punch, scratch, or kick another athlete will result
in disqualification and may be reported to the World Triathlon Tribunal for
potential suspension or expulsion;

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(iv)
Additionally, for the World Triathlon Championship Series, World
Triathlon Cups, World Triathlon Para Series or World Triathlon Para Cups, if an
athlete is penalised for infringing this rule twice in a calendar year, he or
she will not be admitted in the next event from those mentioned above. This
sanction is also applicable to the third, fourth or following infringement.

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f.) Rules about water quality are outlined in
section 10;

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g.) This paragraph applies to Elite, U23 and
Junior races in standard and shorter distances. Fingernails must be trimmed
short and should not be sharp. Nails that could potentially cause harm to other
athletes are not permitted. The nail should not extend past the tip of the
finger. Ideally, the edge of the nail should align with or slightly below the
fingertip. The nails should be rounded or slightly squared to follow the
natural curve of the fingertip. No sharp corners or edges should remain after
trimming. The trimmed edges should be filed to remove rough or jagged edges.

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4.11 Equipment:

a.) Swim cap:

(i) All athletes must wear the official event
numbered swim cap during the swim segment;

EZ Gains - Please place your race swim cap on top of the EZ
Hydro-Glide and EZ Hydro-Glide swim cap.

(ii) In an Aquathlon event athletes may carry
the official event swim cap and goggles during the first run segment and may
wear them in the Transition Area;

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(iii) Numbered swim caps are provided by World
Triathlon or the Local Organising Committee;

(v)
If an athlete chooses to wear two caps, the second swim cap must be
unbranded and the official swim cap must be on the outside from the moment of
the athletes’ line-up procedure starts;

Please select the Non-Branded EZ Hydro-Gains swim cap

(vi)
No sponsor logos are allowed on the official swim cap other than
prescribed by World Triathlon/ Local Organising Committee;

Please select the Non-Branded EZ Hydro-Gains swim cap

(vii)
Athletes may not alter the swim caps in any manner; (vii) Failure to
wear the official swim cap, or altering the official swim cap, may result in a
penalty up to and including disqualification;

The EZ Hydro Glide is worn underneath a standard swim cap and does not require any modification to the cap itself.

(viii)
Neoprene swim caps are allowed if wetsuits are allowed.

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b.) Trisuits:

(i) Athletes must wear the approved trisuit
for the non-wetsuit swims. If athletes choose to wear more than one trisuit,
both have to comply with the specifications;

(ii) Trisuits must be 100% textile material,
which is defined as materials consisting of natural and/or synthetic,
individual and non-consolidated yarns used to constitute a fabric by weaving,
knitting and/or braiding (this generally refers to suits made only from nylon
or lycra that do not have any rubberized material such as polyurethane or
neoprene);

(iii) When the use of wetsuits is forbidden,
clothing covering any part of the arms below the elbows and clothing covering
any part of the legs below the knees is also forbidden with the exceptions
outlined at 2.8.c.) (iii) to 2.8 c.) (vi)

(iv) Trisuits
must comply with the applicable Guidelines Regarding Authorised
Identifications.

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c.) Swimskins:

(i) Swimskins must be 100% textile material,
which is defined as materials consisting of natural and/or synthetic,
individual and non-consolidated yarns used to constitute a fabric by weaving,
knitting and/or braiding (this generally refers to suits made only from nylon
or lycra that do not have any rubberized material such as polyurethane or
neoprene);

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(ii) For Elite,
U23, Junior, Youth and Para triathlon standard and shorter distance events,
swimskins are not allowed; World Triathlon Competition Rules 13 December 2025
48/212 BACK TO CONTENTS

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(iii) For
Age-Group athletes in all events and distances swimskins are allowed;

(iv) Swimskins
must be removed after the swim segment;

(v) Swimskins must comply with the wetsuit
section of the applicable Guidelines Regarding Authorised Identifications;

(vi) Swimskins can be used in all water
temperatures.

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d.) Wetsuits:

(i) Wetsuits cannot exceed 5 mm thickness
anywhere. If the wetsuit is made in two pieces, the combined thickness in the
overlapping areas may not exceed the 5 mm thickness limit, +/- 0.3 mm tolerance
is admissible;

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(ii) Propulsion
devices that create an advantage for the athlete, or a risk to others, are
forbidden;

The EZ Hydro-Glide is not a propulsion device “In
competitive swimming, a propulsion device is any artificial, non-human
mechanism—such as a motor, propeller, or jet—that augments an athlete's
physical force”.

(iii) The most
external part of the wetsuits will fit to the athletes’ body tightly while they
are swimming;

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(iv) A wetsuit may cover any part of the body
except the face, hands and feet. When mandatory, the wetsuit must cover at
least the torso;

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(v) There is no
limitation regarding the length of the zipper;

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(vi) Wetsuits
must comply with the applicable Guidelines Regarding Authorised
Identifications.

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e.) Electronic
devices may be used in the competition unless they are distracting the athlete
from paying full attention to their surroundings;

EZ Gains -The EZ Hydro-Glide GPS Tracker is optional, does not
require any interaction from the swimmer whilst swimming, and it is a pure
safety device and non distracting.

f.) Illegal Equipment:

(i) Athletes must
not use or wear:

● Artificial propulsion devices;

● Flotation
devices;

EZ Gains -EZ Hydro-Glide is Non-buoyant

● Gloves;

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● Socks, except
when use of wetsuits are mandatory;

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● Wetsuits
(including neoprene caps) or any part of the wetsuits when they are forbidden;

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● Non-certified
swimsuits;

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● Snorkels;

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● Bib numbers (in non-wetsuit swim only);

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● Headphone(s),
headset(s) or technical earplug(s), which are inserted or covering the ears,
except ear protection plugs;

EZ Gains -The EZ Hydro-Glide
GPS Tracker is optional, does not require any interaction from the swimmer
whilst swimming, and it is a pure safety device and non-distracting.

● Safety inflatable device (tube) which has
been deployed. If deployed the athlete must retire from the race; World
Triathlon Competition Rules 13 December 2025 49/212 BACK TO CONTENTS

● Suits, vests,
or any clothing having any part made of rubberized material such as
polyurethane or neoprene;

● Buoyancy
shorts;

● Any jewellery;

● Watches. This non allowance applies to
Elite, U23 and Junior races in Standard and shorter distances. Exceptionally
the Head Referee may allow the use of watches.