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TRAIL RUNNING
FOR EVERYBODY
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SEPTEMBER 6TH 2025 – SIGN UP TODAY

The RIDUM – A 30 mile challenge around the hills of South East Wales and the Rhymney Valley Ridgeway Walk.

Join us for an exhilarating 30 mile ultra marathon around the Rhymney Valley Ridgeway Walk, with 4,252 feet of elevation this little beast in the East is a great way to explore the lesser known trails within a stones throw of the Welsh Capital.

The Rhymney Valley Ridgeway Walk

The Rhymney Valley Ridgeway Walk is a waymarked long distance footpath in Wales forming a circular walk around the ridge tops of Caerphilly basin encircling the River Rhymney. From the elevated ridgeway you can expect spectacular views across south east Wales as well as a varied route encompassing lanes, trail and woodland.

Point of interest

Mynydd Machen is the highest point of the trail, a 362-metre-high (1,188 ft) hill lying between the town of Risca and the village of Machen in Caerphilly County Borough in south Wales. Yep… You go up and over it!

Enough of the huff, sign up today, challenge your perceived limits and toe the line at the RIDUM.

SIGN UP TODAY
EXPLORE THE ROUTE – THE RIDUM

Race Day Schedule –

05:30 – Registration Opens

06:30 – Morning Stretch/Catch up with the Pegasus Family

06:45 – Pre-Event Chat with Jay Traynor’s ‘Up and Over’ on repeat!!!

07:00 – Start of The RIDUM

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.

Route – The RIDUM

The RIDUM Compulsory Kit –

Appropriate Footwear (No High Heels)
Water Carrier (1 Litre)
Mobile Phone
Compass (Mobile Phone Version Will Suffice)
Head Lamp or Other Light Source for Tunnels and / or Night-Time
Foil Blanket
Waterproof jacket
Rucksack
Sense of Adventure!!!

Included with your Entry –

  • Infamous Pegasus Medal
  • Post Race Care
  • Fully loaded checkpoints
  • Awesome Pegasus CREW members
  • Professionally organised event and much more…

What to expect once you sign up –

A friendly ‘welcome to the party’ (event) email will be sent to the email address you registered with. Be sure to join the super duper Pegasus Community Group on Facebook here and get to know your fellow runners – we promise they won’t bite!

The next time you will hear from us (directly) will be in the form of an email 6 weeks before your chosen event, then another email 4 weeks before the event and a final email 2 weeks before the event.

Alas that isn’t the last communication – please keep an eye on your mobile for a phone call from our Race Director a couple of days before the event is due to take place – don’t worry you haven’t done anything wrong – it’s a peace of mind call to make sure you are ready for the big day!

Fancy volunteering?

Want to experience a Pegasus event from the eyes of a volunteer and race crew? Drop us an email to info@pegasusultrarunning.com and we’ll be sure to get in touch.

SIGN UP TODAY