By entering the Mid Sussex Triathlon you accept that this event is conducted under the rules and conditions of the British Triathlon Federation and agree to acquaint yourself with, and abide by, those rules and any instructions issued by the organiser. You declare that you are fit to take part in this event, and understand that you take part entirely at your own risk and relieve the organiser of any responsibility for any injury, loss or damage sustained to either your person or property as a result of your participation.


You declare that you will be aged 17 years or over on 31 December this year. Your age group category is determined by the age you are on the 31st December in the year that you are competing. For example, if you are 30 on 1st August 2023 you will be in the 30-39 age group for the whole of 2023.

Closing date for entries

The closing date for entries is the Tuesday before the race, or when the race is full.

Refunds and deferrals

As fellow triathletes we know that injuries happen so we offer a full refund (less bank charges) up to ONE WEEK before the race. You can also swap to or from the Aquabike event as long as you inform us before the race close. Up to 48 hours before the race, you can defer your entry to the following year. Requests should be sent through our contact page. No refunds can be given after the closing date.

Duplicate entries made in genuine error will be refunded in full (less bank charges).

No refund can be given if the race has to be cancelled or postponed due to circumstances outside our control, for instance due to a bomb scare. Your entry fee is invested in the cost of staging the event, and the main costs to contractors, suppliers, administration etc are already committed well before race day.


Photographs and/or video will be taken at the event. By taking part in this event you grant the event organisers full rights to use the images resulting from the photography/video filming, and any reproductions or adaptations of the images for fundraising, publicity or other purposes to help achieve the clubs aims. This might include (but is not limited to) the right for the club and their sponsors to use them in their printed and online publicity, social media, press releases and funding applications. If you do not wish your photograph to be used in this way please inform the event organiser.


This event is being held to encourage participation of anybody who wishes to enter it.  This event will be non-discriminatory.  The organisers actively encourage participation by people of any ability. The organisers will carry out all activities and functions in ways that promote and respect the dignity and equality of all people, irrespective of status or characteristic including, but not limited to, age, ability, disability, ethnicity, gender, marital status, nationality, race, religion or sexual persuasion. All participants are required to respect all other people at all times during the event.

Click here to view the event privacy statment


Safeguarding and Welfare Commitment Statement.

In line with MSTC's Safeguarding Policy, this permitted triathlon event acknowledges the duty of care to safeguard and promote the welfare of triathletes, the organising team and spectators; and is committed to ensuring safeguarding practice reflects statutory responsibilities, government guidance and complies with best practice and British Triathlon requirements.