Jersey • Saturday 1 August 2026

Round the Rock Half Marathon

13.1 miles along Jersey’s west and south coast, starting at The Watersplash and finishing in St Helier.

13.1 miles 11:00 start Coastal trail Cupless race
Join 2026 Waitlist Enter 2027 Half Marathon
The race

A scenic Jersey coastal half marathon

The Round the Rock Half Marathon follows the final section of the island’s full coastal route. Starting at The Watersplash, runners cross St Ouen’s Bay before continuing around Jersey’s south-west coastline towards the finish in St Helier.

Expect a varied route combining beachside paths, coastal trails, headlands, bays, steps and short road links. The route is marked at decision points, but runners should also carry the GPX file on a suitable watch or phone.

Round the Rock is a small, independent event supported by local volunteers. Checkpoints are deliberately simple and practical, with the focus placed on the route, runner safety and the experience of travelling around Jersey under your own power.

Read about the race ethos →
Course information

Route and GPX

The Half Marathon starts at The Watersplash in St Ouen’s Bay and joins the final section of the Round the Rock Ultra course before following the south coast towards St Helier.

Carry the route

Download the GPX and load it onto your watch or phone before race morning. Course markings should be supported by your own navigation backup.

Download Half Marathon GPX
Race morning

Getting to the Half Marathon start

The Half Marathon begins at The Watersplash in St Ouen’s Bay. There is no dedicated event transport, so runners must arrange their own journey to the start.

01

Public bus

The most direct bus service from St Helier is LibertyBus Route 22 or Route X22 from Liberation Station.

  • Suggested departure: 09:10 from Liberation Station
  • Arrival at The Watersplash: approximately 09:55
  • Use the Watersplash North or Watersplash South stop
  • Allow time to collect your number and attend the briefing
Check the LibertyBus journey planner →
02

Taxi or drop-off

A taxi or pre-arranged lift provides a simple direct option from St Helier or your accommodation.

  • Ask for The Watersplash in St Ouen’s Bay
  • Book taxis in advance where possible
  • Drivers should stop only where it is safe and legal
  • Avoid blocking roads, bus stops or local access
03

Parking and collection

Parking around The Watersplash can be busy and the race finishes in St Helier rather than returning to the start.

  • Do not rely on parking being available beside the start
  • Arrange how you will collect your vehicle afterwards
  • Car sharing is strongly encouraged
  • Keep entrances, roads and residential access clear
Important: Bus times and services can change. Check the current timetable before race morning and allow more time than you think you will need.
Before entering

Is this race for you?

Round the Rock is a small, grassroots event. Please understand what the race provides — and what it does not — before committing to it.

What you can expect

  • A scenic and varied Jersey coastal route
  • Course markings at decision points
  • Friendly volunteers and clear safety rules
  • Simple checkpoint food and drinks
  • A GPX file for navigation backup
  • Honest communication before race day
  • A finisher medal at the end of your journey

What you should not expect

  • Toilets at every checkpoint
  • Gourmet food or individual dietary menus
  • Large gantries, entertainment or luxury infrastructure
  • Personal crews, pacers or friends joining the course
  • A fully marshalled route from start to finish
  • A corporate event with large operational teams

Mandatory kit is non-negotiable

Mandatory kit applies to every distance. It is there to protect you if you become injured, cold or unable to continue. No kit means no start.

Respect is non-negotiable too

Abuse or aggression towards volunteers, staff or other participants will result in disqualification and may lead to exclusion from future Trail Monkey events.

If you value grit over glamour, challenge over comfort and community over corporate gloss, you should fit right in.

Planning your race

Race-day logistics

The key details are below. The full race-day guide and FAQ contain the latest operational information.

Read the full race-day guide →
Key times and registration
  • Friday 12:00–15:00: race-number collection in St Helier
  • Saturday 10:45: Half Marathon briefing at The Watersplash
  • Saturday 11:00: Half Marathon start
  • Runners unable to attend Friday registration should arrive at their start at least 45 minutes before the race
Aid stations
  • Checkpoint support is deliberately simple and practical
  • Expect water and simple snacks where specified
  • The race is cupless: carry your own bottle or collapsible cup
  • Bring your own supplies if you have specific dietary requirements
Course timing

There is no separate Half Marathon finish cut-off, but runners should maintain sensible forward progress and follow any instructions given by race staff or marshals.

Mandatory kit — no kit, no start
  • Trail shoes with suitable grip
  • At least 500ml of water-carrying capacity
  • Foil blanket or bivvy bag
  • Charged mobile phone with What3Words and race contact number
  • Whistle
  • Windproof outer layer
  • Sufficient food and nutrition
  • Route loaded onto a GPS watch or phone
Refunds and deferrals
  • Up to three months before the event: 75% refund available
  • Up to one month before the event: deferral within 12 months
  • Within one month: no refund or deferral unless you volunteer to marshal
Runner welfare

Safety on the coast

Jersey’s coastal paths can be narrow, exposed, uneven and slippery. Adjust your pace to the terrain and overtake only where it is safe.

If someone needs help

  1. Stop and assess the situation.
  2. Help the runner put on warm or protective clothing.
  3. Call race control or 999/112 when appropriate.
  4. Use What3Words to communicate the location.
  5. Stay with a serious casualty until help arrives.

Moving safely

  • Take care near cliff edges and exposed paths
  • Slow down on wet rock, steps and technical descents
  • Give way to members of the public
  • Follow marshal instructions
  • Do not use headphones in a way that blocks awareness
Round the Rock

Choose your year

The 2026 Half Marathon is sold out. Join the waitlist or secure your place for the 2027 edition.

Join 2026 Waitlist Enter 2027 Half Marathon

Questions? Read the race-day FAQ or email Paul.