The Dorchester Sprint Triathlon

BUSTINSKIN EVENTS

DORCHESTER
SPRINT TRIATHLON

SUNDAY 18 JULY 2027

Dorchester • Dorset

300M SWIM • 21KM BIKE • 5KM RUN

Your Race. Your Challenge. Dorchester.

The Dorchester Sprint Triathlon returns on Sunday 18 July 2027, bringing athletes to the heart of Dorset for a fantastic morning of swim, bike and run.

With a 300m indoor pool swim, a scenic 21km bike ride through the Dorset countryside and a 5km run around Poundbury's Great Field, Dorchester offers an enjoyable challenge for athletes of all abilities.

Taking on your first triathlon? The pool-based format makes Dorchester a great place to start.

Already racing regularly? The rolling bike course and fast run provide plenty of opportunity to test your fitness and chase a new personal best.

One great event. A challenge for everyone.

Why Race Dorchester?

A welcoming pool swim. Beautiful Dorset roads. A great finish at Poundbury.

There's plenty to enjoy about racing in Dorchester. The compact event layout makes race morning straightforward, while the course delivers a rewarding mix of scenery and competition.

- 300m pool swim – a controlled start with athletes seeded by predicted swim time.
- Scenic Dorset cycling – rolling countryside and the climb towards historic Hardy's Monument.
- 5km run at Poundbury – two laps around the Great Field, ideal for supporters.
- First-timer friendly – an accessible introduction to triathlon without an open-water swim.
- Great for experienced athletes – a chance to race hard over a compact sprint-distance course.
- Experienced local organisers – delivered by BustinSkin Events, organising triathlons in Dorset since 2006.

The Race

SWIM • 300M

Twelve lengths of the pool, with individual time-trial starts.

Athletes are allocated their start positions according to their predicted swim time, creating an organised and controlled beginning to the race.

BIKE • APPROX. 21KM

Head out onto Dorset's rolling roads, enjoying panoramic countryside views and the climb towards historic Hardy's Monument.

A rewarding bike course with plenty of character.

RUN • APPROX. 5KM

Finish with two laps around the Great Field at Poundbury.

The flat, multi-lap layout provides a great opportunity for supporters to cheer athletes towards the finish.

Explore the Race Routes

Know the course. Plan your race. Get ready for Dorchester.

Take a look at the bike and run routes before race day so you know what to expect.

VIEW BIKE ROUTE

VIEW RUN ROUTE

Athletes should familiarise themselves with both routes before the event. Final course information will be included in the official Race Brief.

Key Race Information

- Date: Sunday 18 July 2027
- Venue: Dorchester Sports Centre, Dorset
- Registration & transition: 05:30–06:30
- Race starts: From 07:00
- Swim format: Individual time-trial starts
- Registration: Race morning only

Your individual swim start time and final race-day arrangements will be confirmed in the event information.

Registration & Transition

Registration takes place on race morning only, between 05:30 and 06:30.

Nothing is posted to competitors in advance. All race materials will be provided at registration.

Please arrive with sufficient time to register, prepare your equipment and be ready for your allocated swim start.

Important: Your Swim Time

When entering, please provide an accurate predicted time for your 300m swim.

We use these times to organise the individual swim starts and ensure athletes are seeded appropriately.

Enter your time in HH:MM:SS format.

EXAMPLE
A predicted swim time of 7 minutes and 30 seconds should be entered as: 00:07:30

Please be realistic with your estimate to help us provide a smooth start for everyone.

Important: Race Brief

The official 2027 Dorchester Sprint Triathlon Race Brief will provide the final information for race day.

This will include registration details, swim start arrangements, course information and essential safety instructions.

All competitors must read the Race Brief before race day.

The updated Race Brief will be available to download directly from this event page once published.

Ready to Race Dorchester?

Entries are limited and may close before the advertised closing date if the event reaches capacity.

Secure your place and join us on Sunday 18 July 2027.

Refund Protection & Terms

We recommend purchasing refund protection when entering to cover eligible circumstances such as injury or illness.

All entries are subject to the event terms and conditions. Please review these before booking.

Refer a Friend — Get Rewarded

Racing with friends makes the day even better.

Refer someone to enter and both parties may benefit through the Eventrac referral scheme.

Full details are provided in your confirmation email.

Making Triathlons Devilishly Good Since 2006