Rules and Regulations

Rules and regulations – Before competing with Castle Race Series you need to know with the rules and regulations for your race discipline and have read the Castle Race Series Terms and Conditions.

General Safety For All Disciplines

For the safety of all competitors we recommend the following:

  • Drink plenty of fluid before and during the event.
  • Use caution at the start of the swim if you are not an experienced swimmer.  Even with wave starts at the larger events, it can still be very crowded.
  • Bicycles must be in safe mechanical condition for the race and should be checked by a bike shop mechanic prior to the race.
  • If you are over 35 years of age and/or have not done much regular exercise, it is strongly recommended that you have a medical check-up prior to the event.
  • A proper training program for the event is also strongly recommended – to find our more visit our preparation section of the website.

Triathlon

Rules and Regulations: Events held in Britain are run under the British Triathlon competition rules.

  • Any non-sportsman-like conduct constitutes grounds for immediate disqualification of you or your team.
  • Competitors must strictly obey all directions and instructions by marshals, the Highway Authority and Police.
  • Medical staff have the authority to remove a competitor from the race if judged to be physically incapable of continuing the race without risk of serious injury.
  • If you withdraw from the race, please notify the timing team at the finish line, and hand in your timing chip to the staff.
  • It is the responsibility of each competitor to understand the directions and to be familiar with the swim, cycle and run course.
  • A top must be worn during the cycle leg and run leg of the event. Your given Race number should be visible at all times; If you are wearing a race belt; number at the back on the bike, number on the front on the run.
  • It is the responsibility of Relay teams to transfer their timing chip device and race number in transition.
  • Competitors not completing any discipline within the published cut off times will be withdrawn from the event and the Race Director has the right to stop a competitor at any time from completing the race if in his opinion the competitor’s overall time is likely to fall outside the published cut-off time. Please note that once the Race Director has determined that a competitor is unlikely to complete the race within the published cut off time(s) and the competitor has been informed that they have been withdrawn from the race, the Race Director reserves the right to withdraw event marshals and any traffic management from the course. Any competitor acting against the instructions of the Race Director and/or event marshals concerning withdrawal from the race will be regarded as contravening race Rules and subject to disqualification.

CHILDREN’S AGE GROUPS

  • There are different age groups for the children’s races
  • These age categories relate to the children’s age as of 31st December of the year in which they are participating.
  • If a child wishes to participate in a younger age category race, he/she may, as long as the office is notified in writing and it is understood that they forgo the right to a podium position.

Swim

Events held in Britain are run under the British Triathlon competition rules.

  • No fins, paddles, snorkels or floatation devices are to be used. Regular swimming goggles are permitted.
  • All competitors must wear the Castle Triathlon Series swimming cap during the swim leg. This will also help to ensure that you compete in your correct age group and scheduled wave start time.
  • No individual paddlers or escorts are permitted. The course will be adequately patrolled by safety vessels.
  • Water temperature assessed 24 hours before the event.
  • Wetsuits thickness not to exceed 5mm.
  • Competitors who warm up must be behind the starting line at least three minutes before the race start.
  • If you get into difficulty in the swim you may call for assistance.
  • If you are retrieved from the swim by water safety officials you will be listed as disqualified, however times can still be recorded if, at the discretion of the Medical Director, you are permitted (and willing) to complete the rest of the event.

Cycle

Events held in Britain are run under the British Triathlon competition rules.

  • The roads use on all the cycle routes of all the races will NOT be subject to any official closures although both the Police and Highway Authorities have been involved in the planning process for each race.
  • All competitors will be required to wear United Kingdom/French STANDARDS APPROVED HELMET throughout the bike course.
  • Helmet straps must be fastened at all times the bicycle is in motion i.e. being ridden or walked. In the event of a breakdown on the cycle course, the helmet must remain on and securely fastened.
  • Advice of Drafting Penalties. Penalty box infractions:
    • 1st Penalty – 30 Seconds for Sprint or shorter distances. 1 minute for Standard and longer distances.
    • 2nd Penalty – Disqualification
  • Absolutely no drafting another bicycle or any other vehicle is allowed except for in draft specific races. A space of 5 bike lengths (12 metres) must be left between all riders at all times.
  • Competitors are individually responsible for following traffic laws as dictated by the Road Traffic Act and are solely responsible for the consequences of any infringements
  • The competitors must follow the Highway Code at all times whilst on the cycle course.
  • Competitors must obey the instructions of course marshal’s highway authority and road rules at all times.
  • No MP3 Players, iPod’s, walkmans etc are permitted whilst competing.

RUN

Events held in Britain are run under the British Triathlon competition rules.

  • No form of locomotion other than running or walking is allowed – no exceptions!
  • No individual support vehicles or escort runners are allowed.
  • Runners are expected to follow the directions of all course marshals and race officials.
  • No MP3 Players, iPod’s, walkmans etc are permitted whilst competing.

TRANSITION AND PENALTIES

Events held in Britain are run under the British Triathlon competition rules.

  • Once the race starts, only competitors who are racing can enter the compound during transition. Remember to get all your swim gear out of the bike compound before the race commences, as you will be unable to return to the compound until your cycle leg.
  • Make a mental note of your placement in the compound so you can easily find your correct position, e.g. Bike rack row number. No flags, signs or tape can be used to identify a competitor’s bike rack as it provides an unfair advantage over other competitors.
  • Bikes must be placed in the correct bike rack after the bike sector of the race. Failure to do so will result in disqualification.
  • Each competitor is ultimately responsible for his or her own gear.
  • Helmets must be fastened prior to unracking your bike and must remain fastened until the bike has been racked following the cycle leg. Any breach of this rule may incur a time penalty.

PENALTIES

  • Penalty box infractions:
    • TIME: 1 minute Long Distance; 30 seconds Middle Distance; 15 seconds Standard Distance; 10 seconds Sprint Plus and shorter distance.
  • Blocking
  • Illegal passing (Disqualification)
  • Pulling back in the swim
  • Early start or turn on the swim
  • Stop / start penalty
  • Cycle Course:
    • Report to the Penalty Box and advise the official/marshal that you are serving a stop/start penalty
  • Run Course/Transition: Issued on the spot

DISQUALIFICATIONS

  • If you are shown a RED CARD or fail to attend the Penalty Box a VIOLATION REPORT will be filled out and submitted to the Chief Technical Official
  • The Chief Technical Official will assess the VIOLATION REPORT and issue the appropriate penalty.

Cut-Off Times

At Castle Race Series, our priority is to ensure that all participants are able to compete. Accordingly, cut-off times are not typically enforced. However, where the safety of competitors or marshals may be compromised, we reserve the right to enforce the following cut-off times.

TRIATHLON RACES

Bastion (Full Iron Distance)

  • Swim (at point of swim exit):
    2 hours 20 minutes (+10 minutes for transition 1)
  • Cycle:
    9 hours and 45 minutes (allows average speed of 24km/h)
  • Swim, transition 1, cycle and transition 2 (at T2 exit point):
    10 hours (from start of race)
  • Overall cut-off (must have started last lap of run):
    14 hours 30 minutes (from start of race).

Gauntlet (Half Iron Distance)

  • Swim (at point of swim exit): 1 hour 30 minutes
  • Swim, transition 1, bike and transition 2 (at T2 exit point): Total of 7 hours
  • Overall Cut-Off: 10 hours

Olympic (Standard Distance)

  • Swim, transition 1, bike and transition 2 (at T2 exit point): Total of 3 hours 15 minutes
  • Overall Cut-Off: 4 hours 15 minutes

Sprint Plus

  • Swim, transition 1, bike and transition 2 (at T2 exit point): Total of 3 hours
  • Overall Cut-Off: 4 hours

Sprint

  • Swim, transition 1, bike and transition 2 (at T2 exit point): Total of 2 hours
  • Overall Cut-Off: 3 hours

Super Sprint

  • Swim, transition 1, bike and transition 2 (at T2 exit point): Total of 2 hours
  • Overall Cut-Off: 3 hours

Starter

  • Swim, transition 1, bike and transition 2 (at T2 exit point): Total of 2 hours
  • Overall Cut-Off: 3 hours

Junior

  • No Cut-Off times

MULTISPORT

Aquabike

  • Sprint: 3 hours
  • Standard: 3 hours 30 minutes
  • Middle: 7 hours 30 minutes
  • Long: 10 hours 45 minutes

Duathlon

  • Sprint: 4 hours
  • Standard: 4 hours 30 minutes
  • Middle: 8 hours 15 minutes
  • Long: 8 hours 45 minutes

Aquathlon

  • Sprint: 4 hours
  • Standard: 4 hours 30 minutes
  • Middle: 8 hours 15 minutes
  • Long: 8 hours 45 minutes

RUN

  • 10K: 3 hours
  • Half Marathon: 4 hours
  • Marathon: 6 hours
  • 50 Milers: 17

SWIM

  • 1 mile: 1 hour
  • 2.5K: 2 hours
  • 1.9K: 1 hours 15 minutes
  • 3.8K: 2 hours 5 minutes
  • 5K: 3 hours 30 minutes
  • 10K: 6 hours

CYCLE

  • 90K: 9 hours
  • 180K: 12 hours

Water Regulations

All lakes used in the Castle Race Series are tested for water quality to ensure they comply with the EU Bathing Water Directive (2006/7/EC).

Mandatory standards

Meeting the mandatory standards of the Directive is a legal requirement. Since 2015, microbiological monitoring focuses on two key parameters:

  • Intestinal enterococci

  • Escherichia coli (E. coli)

Bathing waters are classified based on these results as Excellent, Good, Sufficient, or Poor. To achieve compliance, waters must meet at least the Sufficient standard, based on a four-year rolling dataset of samples taken during the bathing season.

Cases of non-compliance with other physico-chemical parameters (such as pH, transparency, or chemical pollutants) remain extremely rare in the UK.

In 2024, 91.8% of England’s 450 designated bathing waters met the minimum (Sufficient) standard, while 37 sites (8.2%) were classified as Poor and therefore failed.

The table below shows percentage compliance with the mandatory standards in the UK over the last decade.

Year 2015 2016 2017 2018 2019 2021 2022 2023 2024
% Compliance 97.0 96.5 98.3 98.3 98.3 99.0 93.0 96.0 91.8
Guideline standards

The Directive also sets more stringent thresholds for “Excellent” status, which Member States are encouraged to achieve. This standard underpins the internationally recognised Blue Flag award scheme.

In 2024:

  • 64.2% of English bathing waters achieved “Excellent” status.

  • By comparison, the EU average was around 85% Excellent, with 96% of all monitored bathing waters meeting the minimum standard.