Running events in Cardiff

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What you need to know about Running

Running is the world’s most accessible sport. Park runs, colour runs, 5k, 10k, half marathons, marathons and ultras — all you need is a pair of trainers and off you go. Running events are hugely popular on Let’s Do This and it’s a sociable sport, so get some friends involved and achieve something extraordinary.

If you’re starting small, the 5k and 10k events are great fun and definitely worth doing even if you’re training for a bigger challenge further down the line. Getting used to the atmosphere of an event is important. You’re so much more likely to hit a better time if there’s a crowd cheering you on, people in fancy dress and a big celebration at the finish line.

Find local Running races

Today, with international organisations, local clubs and national events to choose from, there are thousands of races to discover, and we want to help you find them quickly and easily. Below you’ll find selections by running type, running location and some exceptional events to take part in.

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10k Races in Cardiff

An exciting and exhilarating off-road 10k or 5k multi-terrain run which starts at the foot of Brean Down, then it's straight up the steep hill to the top! The route then follows some more challenging hills, with a gradual descent to the fort and the turnaround point. The 10k runners will endure this taxing route twice.

Brean Down Challenge 5/10k – September

Burnham-on-Sea, GB
Brean Down Challenge 5/10k – September

This multi-terrain 5/10k will start from near the foot of Brean Down, ascending straight into the steep hill to the top. You will then be taken up and over the challenging undulating hills with a gradual descent to the fort which is the turnaround point. The route will then take you along the adjacent side and back down to the finish. The 10k runners will then take on this enduring route for the 2nd time. There will be a halfway water/feed station just past the 5k point.

The route will again be marked out with run route sign signs and orange/yellow waymarker flags throughout the course, ensuring that Brean Down is preserved and not damaged in any way.

Brean Down Challenge 5/10k

Burnham-on-Sea, GB
Brean Down Challenge 5/10k

The Magor 10k is probably the flattest and fastest road 10k in Wales. If you're looking for a 10k PB this is the place to get it! The course is all on scenic country lanes and suits both experienced and beginner runners alike.

Magor 10K

Undy, Monmouthshire, GB
1 race
£10£12
Magor 10K
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Marathon events in Cardiff

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5k Races in Cardiff

An exciting and exhilarating off-road 10k or 5k multi-terrain run which starts at the foot of Brean Down, then it's straight up the steep hill to the top! The route then follows some more challenging hills, with a gradual descent to the fort and the turnaround point. The 10k runners will endure this taxing route twice.

Brean Down Challenge 5/10k – September

Burnham-on-Sea, GB
Brean Down Challenge 5/10k – September

This multi-terrain 5/10k will start from near the foot of Brean Down, ascending straight into the steep hill to the top. You will then be taken up and over the challenging undulating hills with a gradual descent to the fort which is the turnaround point. The route will then take you along the adjacent side and back down to the finish. The 10k runners will then take on this enduring route for the 2nd time. There will be a halfway water/feed station just past the 5k point.

The route will again be marked out with run route sign signs and orange/yellow waymarker flags throughout the course, ensuring that Brean Down is preserved and not damaged in any way.

Brean Down Challenge 5/10k

Burnham-on-Sea, GB
Brean Down Challenge 5/10k
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Ultramarathon events in Cardiff

The Midnight Express follows the same 45 mile route as the Green Man Ultra only in reverse (clockwise).

As this race is mainly in the dark, it is mandatory for each competitor to carry a route-loaded GPS device. A GPX file will be made available to competitors prior to the race to take into account the actual race route including last minute diversions that we are aware of. It is also a requirement for each competitor to understand how to obtain their location grid reference from their GPS device in case of an emergency.

The Midnight Express

Long Ashton, North Somerset, GB
The Midnight Express

This ultra marathon will start at noon, and runners will have 1 hour to complete the first 4.2 mile loop and be at the start line ready to go again at 1pm, then again at 2pm and so on. Any runner not finished inside the time limit and at the start ready to go again will be disqualified. This will happen every hour until there's only one runner at the start line. This runner must complete a solo loop inside the time limit to be crowned the winner. All runners with the exception of the winner will be an official DNF(did not finish) and will get a medal to prove it! Any competitor still in the race at 24hrs (100.8 miles) will receive a medal. This race is not about being the fastest! Pacing is everything!

Last One Standing

Cardiff, Cardiff, GB
Last One Standing

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