The Leigh-on-Sea 10K Classic is set to become one of the standout summer races on the Essex running calendar, and it’s not hard to see why. A fast, flat and scenic coastal route combined with a vibrant community atmosphere makes this much more than just another 10K.

◆ Sunday 5th July 2026
◆ Leigh Marina, Leigh-on-Sea, Essex
◆ 10K Race
◆ Fast & flat coastal route

Overview

The Leigh-on-Sea 10K Classic is a brand new summer race brought to you by Mammoth Events, the team behind The Lap.

Starting and finishing at Leigh Marina, the race combines a scenic seafront setting with an energetic race-day atmosphere designed for runners of all abilities — from experienced club runners chasing a PB to first-time 10K runners taking on a new challenge.

With a fast and flat course, strong community support, music, timing, and a buzzing event village at the marina, the Leigh-on-Sea 10K Classic aims to deliver a memorable race-day experience from start to finish.

Whether you’re racing hard or simply soaking up the atmosphere, this is your chance to be part of the very first edition of a brand new coastal race for Leigh-on-Sea.

Race Highlights

• Fast & flat PB potential course
• Scenic coastal route
• Event village atmosphere at Leigh Marina
• Music & race-day energy
• Friendly community event
• Suitable for all abilities
• Timing
• Bespoke finisher medal

What’s Included

• Bespoke finisher medal
• Timing
• Aid station
• Marshalled & clearly marked route
• Event village at Leigh Marina
• Music & atmosphere
• Baggage drop
• Toilets

Event Information

Further race information, including final event details and race-day instructions, will be sent to all registered entrants prior to race day.