Take the hassle out of travelling with a bike and hire one for race day. BBH's team of mechanics will be on hand for any fitting adjustments, pedal changes or installation of extra parts that you may want.

TTH specialise in innovative coaching for individuals and groups. They have created a unique online coaching opportunity for all Castle Race Series athletes and lead our training days.

Make sure you're covered for any unforeseen circumstances. Yellow Jersey have a number of different options for event day cover, bike damage or theft and reimbursement due to injury.

Look the part when you're training in one of our Castle Race Series t-shirts. Share your photos using #CastleRaceSeries so we can see you in action.

Optimise your performance with High5's complete product range made from the very best ingredients, tested by scientists in the lab and trialed and used by world-class athletes.

Get stocked up on BeetActive and CherryActive concentrates, the perfect natural pre and post nutrition pairing enjoyed by leading endurance athletes, football, rugby and Olympic teams.

Get in touch with Six Physio's team to create a bespoke treatment plan is aimed at getting you back to what you love doing most...competing!

Need to hire a wetsuit? This is really easy, quick and affordable solution for making sure you have a high performance, technical Yonda wetsuit for race day.

Looking to buy a wetsuit? Yonda wetsuits are built with technical neoprene panels, the right balance of flexibility and buoyancy and will aid your swim style.

Sports yoga for those wanting to be stronger and injury free before and after race day. Run by triathletes, the yoga sessions are specifically geared towards athletes, strengthening the areas needed most.