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Distance

50KM

Elevation

264M

Start Date

Sat, 5th Jun 2027

Location

Rochester, Kent

Cut-off Time

9 Hours

Three Castles 50K Ultramarathon Kent

Imagine an ultra marathon where your journey is guided not just by trail markers, but by the flow of a river and the shadows of ancient castles. The Three Castles 50km is a unique point-to-point ultramarathon that takes you on a historical and scenic tour through the heart of Kent, following the beautiful Medway Valley Walk.

This isn't a battle against brutal hills, it's a test of endurance and pacing on a predominantly flat and fast course, making it the perfect race for a first-timer or a seasoned runner chasing a new personal best.

Course

This 50k ultra marathon begins on the Esplanade in Rochester, under the formidable gaze of Rochester Castle, one of England's best-preserved Norman keeps. From this epic starting point, the route quickly finds the serene paths of the Medway Valley Walk. You'll follow the gentle meanders of the river, leaving the town behind for peaceful towpaths and well-marked trails.

The course leads you through a tapestry of classic Kent countryside and charming villages. Along the way, you'll pass the fairytale-like Allington Castle and eventually run towards the impressive motte of Tonbridge Castle in the final stages of your race.

The finish is a truly special one. Instead of just an inflatable arch in a field, you'll enter the Tonbridge School Centre and complete a triumphant final lap of the athletics track. It’s a fantastic way to finish your journey and soak in the applause.

The Three Castles 50km is a wonderfully accessible ultra. Its flat profile makes it an ideal choice if you're looking to step up to the 50km distance without the added challenge of significant elevation. For full details regarding registration and race details, please visit the official race website. 

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