THE INTERTIDAL

A unique adventure across Jersey's low-tide terrain from Gorey to St Aubin's, linking six iconic landmarks across the foreshore. With the third-largest tidal range in the world, this point-to-point race really is the chance to go where very few feet have been before.

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A Race Like No Other

Start

Gorey

Finish

St Aubin's

Distance

Approx. 26.7 km

Elevation

Approx. 40 m

Format

Point-to-point, tide-dependent

Date

15 August 2026

What Is The Intertidal?

The island has the third-largest tidal ranges in the world, with over 12 m on Spring Tides and receding as much as two miles from the southeast coast.

The Intertidal is a running challenge like no other, set in the small window of time when the usually submerged surface is exposed.

You'll run between two corners of the island and collect six iconic coastal landmarks on the way. Expect mixed surfaces, shifting conditions, and a route that rewards calm decision-making as much as fitness.

We don't create a cut-off, the sea does.

The Six Landmarks

A journey across Jersey's unique foreshore.

Seymour Tower
1
Seymour Tower

A Jersey icon out on the flats. Big skies, big exposure.

Seymour Tower

A Jersey icon out on the flats. Big skies, big exposure.

Seymour Tower

Seymour Tower is one of Jersey's most distinctive coastal fortifications: a square-built 18th-century defensive tower standing alone on a tidal outcrop nearly 2 km offshore, raised in the aftermath of the 1781 French invasion attempt. Its isolation, military purpose, and position within one of the world's largest intertidal zones makes it both historically significant and geographically dramatic.

Icho Tower
2
Icho Tower

A solitary marker and a proper moment to take stock before the next stretch.

Icho Tower

A solitary marker and a proper moment to take stock before the next stretch.

Icho Tower

A compact, granite Martello-style tower built in 1810-1811 on a tidal reef in St Clement's Bay, forming part of Jersey's coastal defenses during the Napoleonic Wars. Its isolated position, round profile, and military purpose distinguish it sharply from the areas shifting sands, reefs, and channels that historically made the southeast coast vulnerable to landings.

Green Island
3
Green Island

A classic Jersey waypoint with views that feel earned.

Green Island

A classic Jersey waypoint with views that feel earned.

Green Island

Also known by its older name La Motte - Green Island is a small tidal islet off Jersey's southeast coast, notable for its rich prehistoric archaeology, its shifting relationship with the shoreline, and its distinctive geology. It sits just offshore from St Clement and becomes completely surrounded by water at high tide.

Havre des Pas
4
Havre des Pas

Back into civilization briefly, then straight back out again.

Havre des Pas

Back into civilization briefly, then straight back out again.

Havre des Pas

Havre des Pas is a Victorian and Edwardian seaside district just a short walk from St Helier town centre. The distinctive blue and white coloured swimming pool is a late-19th-century tidal lido, built in 1895 and is one of the earliest purpose-built seaside bathing pools in the British Isles. Its circular granite tower, sweeping terraces, and position on a natural rocky platform make it both architecturally distinctive and historically significant.

Elizabeth Castle
5
Elizabeth Castle

A signature landmark and a turning point for many runners mentally.

Elizabeth Castle

A signature landmark and a turning point for many runners mentally.

Elizabeth Castle

Jersey's headline act for good reason: the castle is one of the Island's most important historic fortresses: a granite stronghold built from the late 16th-century on a tidal islet in St Aubin's Bay, guarding the approaches to St Helier and embodying over 400 years of military history. You'll approach ia the causeway with the castle cut off twice daily by the tide.

St Aubin's Fort
6
St Aubin's Fort

One last coastal target before the finish pull into St Aubin's.

St Aubin's Fort

One last coastal target before the finish pull into St Aubin's.

St Aubin's Fort

St Aubin’s Fort is the exclamation mark at the end of the bay. Built to defend approaches and assert control of the waterway when coastal security mattered as much as any road. Close enough that you can see the finish but far enough away that the shore is not yet in reach. The final stretch takes you into the picturesque fishing village of St Aubins where your journey will end.

How It Works

  1. 1
    Enter and receive your confirmation email.
  2. 2
    On race day, you start within the event window set around low tide, running from Long Beach in Gorey away from shore.
  3. 3
    You must visit all six landmarks in order and collect a token from each to prove you made it.
  4. 4
    Finish up the slope at St Aubin's Yacht Club, for result validation and well-earned refreshment.

Safety is our priority

If conditions change, you are expected to make conservative decisions. Please respect the decisions of the race crew.

Read the safety guidance

Who It's For

Are you ready for the challenge?

  • Those looking for something completely new and unique
  • Runners comfortable with varied terrain and changing footing
  • People who enjoy a challenge and can stay composed under pressure
  • Anyone happy to self-manage pace, kit, and route choices between key points
  • Not for you if you want a closed-road course, constant aid stations, or predictable conditions.

Ready to Take on The Intertidal?

Registration is open for the 2026 challenge. Secure your spot at one of the world's most unusual races.

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