Up for the Challenge!

Up for a Challenge!

Royal Welsh Trail Running Festival

2018 Results & Photos >

Incorporated into the Royal Welsh Spring Festival, the Royal Welsh Trail Running Festival has quickly established itself as one of the UK’s largest trail running events, offering a series of thrilling and scenic races in the heart of Mid-Wales.

Castell Howell Foods are the Principal Partner of the Royal Welsh Trail Running Festival, which is delivered by Run 4 Wales – the mass participation events team behind the Cardiff Half Marathon.

The 10K and Half Marathon trail courses start and finish in the Royal Welsh Showground in Builth Wells and take in valleys, fields, woodland tracks and stunning forestry. The 3K Trail, Family Mile and Toddler Trail, offer something for all ages and abilities.

This year brings a host of exciting changes. With the race expected to grow in size even further, race packs will now be posted prior to the event, and 10K and half marathon races will start separately in a new and improved start and finish area, located next to a revamped race village. Competitors will now be chip-timed as they cross the start and finish line, whilst family and friends can track their progress on a brand-new smartphone app.

Race entry fees include a bespoke unique commemorative medal, technical finishers t-shirt (for half marathon and 10K) and free entry into the Royal Welsh Spring Festival – a celebration of rural life with entertainment, workshops, livestock, trade stands and a street food quarter – the perfect place to unwind after running the trails.

Runners are encouraged to fundraise for Prostate Cymru – our Lead Charity.

Camping Packages are available for those wanting to make a weekend of the Spring Festival.


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Event Information
For the more accomplished trail runner, each are one or two laps respectively on an undulating course which meanders in the valley, fields, woodland tracks and stunning forestry surrounding the Royal Welsh Showground. Entry includes a technical finishers tee and unique wooden commemorative medal.
The 3K race is perfect for those looking to embrace the fun and excitement of trail running, without committing to the longer distances. For the youngest of competitors there is a Toddler Trail Challenge and a pentathlon of come-and-try athletic activities.
We have a number of Associated Charities with spaces available in the Royal Welsh Trail Running Festival. Knowing your run has helped others gives a huge boost to the satisfaction you’ll feel on finishing the race and help keep you motivated during your training!
Looking to enter the race as a group or team? Our Corporate Challenge offers discounted race entries and is the perfect team-building exercise, fundraising opportunity or CSR activity for your business.
The Course

10K and half marathon races start within the Royal Welsh Showground, taking in valleys, fields, woodland tracks and stunning forestry - with stunning views of the Royal Welsh Showground below. Half marathon runners will return to the showground before returning for a second loop.

Get in Touch

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The Royal Welsh Trail Running Festival is organised by Run 4 Wales, the organisers of the Cardiff Half Marathon.

Phone: 029 2166 0790

Run 4 Wales Ltd
Pod 1 Capital Retail Park
Leckwith Road
CF11 8EG