THE BORDERLANDS OF WALES ULTRA MARATHON 2026
An adventure through the ancient borderlands where Wales meets England
APRIL 4th 2026
Join us for the BOWUM – The Borderlands of Wales Ultra Marathon, an unforgettable journey through the heart of Monmouthshire. Covering 30 miles of raw Welsh beauty, this ultra marathon explores the legendary Three Castles Walk, connecting the historic fortresses of Skenfrith, Grosmont, and White Castle.
This is more than just a race – it’s an adventure through the ancient borderlands where Wales meets England, weaving through rolling hills, hidden valleys, and timeless villages. Whether you’re chasing a personal best or soaking in the scenery, Pegasus invites you to discover the soul of the Welsh Marches.
Experience the spirit of Wales, its rugged landscapes, deep history, and unmatched natural beauty – all in one epic day on foot.
The Borderlands of Wales
The Borderlands of Wales Circular is a stunning route through the historic borderlands of Monmouthshire, where Wales meets England in a dramatic landscape of castles, valleys, and ancient trails. This circular adventure blends parts of the Three Castles Walk, Offa’s Dyke Path, and surrounding countryside into one unforgettable journey.
Points of interest
The Three Castles – Skenfrith, Grosmont, and White Castle – are the crown jewels of Monmouthshire’s borderlands. Steeped in history and standing guard over the surrounding countryside, these medieval fortresses are impossible to miss – and unforgettable to experience.
In 2026, we launch something entirely new – the very first edition of BOWUM: The Borderlands of Wales Ultra Marathon. Be part of this exciting debut event as we open the gates to a fresh challenge through the breathtaking Three Castles Walk and the historic borderlands of Monmouthshire.
Challenge your perceived limits in a safe, supportive, and welcoming environment – where stunning scenery, rich history, and a strong sense of community come together.
Make history with us at the inaugural BOWUM in 2026!
EXPLORE THE ROUTE – THE BOWUM
Why do we use plotaroute?
We use plotaroute.com for supplying our maps as this means we can provide last minute updates that are readily available and allow you to download them in the best format for your navigation device.
Note: plotaroute.com does have pop-ups. Pegasus Ultra Running will never charge you for downloading or accessing our route files
Race Day Schedule
05:30 – Registration Opens
06:30 – Morning Stretch/Catch up with the Pegasus Family
06:45 – Pre-Event Chat with Heart FM on repeat!!!
07:00 – Start of The BOWUM
Time Limits and Checkpoints
Please note we do not have time limits. Like we’ve stated previously, you’ve trained and paid to enter this race… We owe it to each participant to provide the help, support and time to get you to the finish line. Although we want our participants to challenge themselves, we don’t believe you have to run your heart out to do so. Take in the scenery, have a chat with a local, but most of all… enjoy the adventure!
In terms of Checkpoints, there are 3 along the route. They will be fully manned and stocked with snacks, fresh fruit, drinks (hot and cold), seats, power banks and music . Please include your dietary requirements when signing up, and we will accommodate accordingly.
