Race Preparation

We have partnered with experts in tri gear to help you kit yourself out for race day, whether through hiring or purchasing.


We advise participants of the water temperature in the run up to each event.  Basically, if it is over 15C and under 23C it is wetsuit optional.  Regardless, we would recommend the use of a wetsuit if you are new to open water swimming and/ or a weaker swimmer.  Both shorties and full-length wetsuits are acceptable but should not exceed 5mm in thickness.  Please note that a triathlon-suit is not an alternative to a wetsuit.

Help make that transition from swimming pool to open water with Outdoor Swimmer’s guide to “Escape the Pool”

All of our adult  and junior (13-15 year olds) cycle routes* are on closed roads and as such, we recommend that you hire or buy a road/ racing bike (this includes lightweight hybrid types as we know that not everyone gets on with drop handlebars!) for your race.  This said, we have many a fine  participant who use their mountain bike (heavy) and we have even seen a bike with a kids seat still affixed to the back of it!

The children’s (8-12 year olds) cycle route always takes place within the Castle Estate boundary and as such off the public road and free of traffic.  We recommend mountain bikes although some use a cyclo cross bike (effectively a racer with off-road tyres). The courses encompasses a complete mix of terrain but not too technical (e.g. no bunny hopping logs or super steep descents).

Cycle helmets are compulsory for all.

All running routes are off road and depending on conditions under foot can require a trail type running shoe.  If you only have normal running shoes you will also be fine but just won’t get the sort of traction the super fast guys and girls get as they hurtle around the course.

*The Junior Cycle route at Hever Castle in September is off road and includes 2 laps around the estate on a variety of surfaces including grass, track, tarmac and gravel.

Equipment Checklist

You will need:
  • Transition box/bag
  • Wetsuit
  • Goggles
  • Towel
  • Cycling shoes & socks (If wearing)
  • Tri suit or shorts and t-shirt
  • Bike
  • Cycle helmet
  • Trainers (some routes require trail shoes)
  • Nutrition
  • Water bottle
  • Race belt

We provide you with a swim cap.

If you would like to hire a wetsuit from Zone3 for your race, please follow the link below.

There is also an option to  purchase wetsuits from the Zone3 Store.

Zone3 Wetsuit Hire

The Zone3 range of triathlon wetsuits are designed for beginners all the way through to professional athletes each offering the very best performance, comfort and fit for the given price range. Monthly or a seasonal hire available.

Shop Zone3 Wetsuits

Reach new limits with Zone3’s stunning wetsuit range. Zone3 are offering an exclusive 25% discount to Castle Triathlon Series participants.

Use code ‘CASTLE2019’ to benefit from this offer.


We’ve partnered with KitBrix, the number one Triathlon organiser bag, to work towards the common goal of helping athletes be prepared to achieve their best performance. KitBrix create innovative and inspired organiser systems for triathletes which are built with one, unfussy purpose in mind: to save you time, enabling you to perform at your best.

Castle Triathlon Series athletes can buy KitBrix with a 20% discount using code: CTS20%. SHOP KITBRIX HERE

Bike hire castle triathlon series

Bike Hire

British Bike Hire are the official bike hire partner for the Castle Triathlon Series.

Hiring a bike with British Bike Hire takes the stress and hassle of traveling with your bike out of race weekend; you can rely on them to have a freshly cleaned and serviced bike delivered to the event ready for collection. Once there you can collect your bike from one of their team of mechanics who will be on hand for any fitting adjustments, pedal changes or installation of extra parts that you may want.

The process is simple:
1.       Book your book online at
2.       You’ll receive a confirmation email and then information about the event in the week leading up to it
3.       Arrive at your Castle Triathlon event and find your bike ready to ride in the event village
4.       Do your event!
5.       Drop it off at the end of the day when you’re finished

You can choose from their wide range of bikes from carbon road bikes at £75 for a single day hire, to hybrid bikes for £40 for a day hire.

Bike Hire (Chantilly)

Allovelo Bikes is located in Paris and will be providing bike hire for the Chantilly Triathlon event. Please call or visit their website to book and pay for your bike hire, then simply pick it up from the event. Allovelo will be located by the Transition area.

Call Allovelo on: 0033 1 40 35 36 36

Junior equipment

So, what gear do you need?

Here is a list of the key items; if you don’t have them already you can either buy or hire them from our retail partners.

  • Wetsuit (all Castle Triathlon Series events are in open lakes so temperatures can get pretty cold).
  • Swimming goggles
  • Swim hat (all competitors get a free hat on the day of the events)
  • Bike (mountain bikes are ideal)
  • Helmet
  • Trainers
  • Elastic or lock laces – to tie up your trainers quickly
  • Tri-suit or shorts and t-shirt are fine
Race distances

Race distances

For the absolute beginners and children to the professional triathletes, the Castle Triathlon Series offers a wealth of race distances to suit all levels.

Find out more


Hosted at a selection of stunning and iconic castles across the UK, Ireland and France, the Castle Triathlon Series events all promise an inspirational and memorable race experience.

Find out more

Take part

We pride ourselves on offering a bespoke and tailored offering for all those wishing to take part and grateful for all those who want to be involved on the day.

Find out more


We would always recommend training in preparation for any event, but how much you do, and the style you take is down to you.

Find out more