We’re back for 2026!
After a sold-out first year, we’re ready to welcome runners to the bigger and better River Run Half Marathon.

We’ve listened to your feedback and made improvements to create one of the best Half Marathons in the South East of England. You won’t want to miss the upgraded River Run along the stunning River Adur route!

Whether you’re a trail enthusiast or a road runner, this race is for you.

Starting in the beautiful town of Shoreham-by-Sea, this is one of the most picturesque half marathons in the UK — fast, flat, and perfect for runners of all levels.

The River Run is part of "The South Coast Series" this race will be the final of the 4.