The Brecon to Cardiff Xtreme, is a 47 mile mountain running version of our classic Brecon to Cardiff ultramarathon which is now in its 11th year.  The B2C Xtreme is a 75kilometer, linear race over 11 major peaks between Brecon and Cardiff.  This is a tough winter ultra marathon with approximately 2680 meters of ascent and is only suitable for those with excellent winter mountain running skills, experience and fitness.  The event sold out in 2024 and places are limited.

Starting at the canal basin in Brecon the Xtreme heads through the old town then straight to the top of Pen Y Fan - the highest peak in South Britain.  This is followed by steep climbs up Crybin and Fan Y Big, before a fast descent down the Roman road takes you to lower Neuadd reservoir and CP1.  Another short but steep climb reaches the Twyn Mwyalchod trig point, and is followed by a long descent towards Pontsticilli Reservoir and CP2. From here the Xtreme and classic B2C routes briefly converge with some faster forestry running over more rolling hills, before gaining the half way checkpoint in Merthyr. 

Now clear of the national park, the classic B2C course rolls gently downhill to the finish, but the Xtreme still has approximately half the elevation to conquer! Initially it is an ascent over Twyn Gwersylfa in the Gethin woodlands, followed by a fast decent and crossing of the Cynon Valley.  The route then joins the waymarked Glamorgan Way trail with a climb up towards Carn y Pigwn in the stunning St Gwynno and Llanwonno forestry complex. After the rolling decent of Pen y Foel, the route converges again with the Brecon to Cardiff classic runners and a short section along the banks of the river Taff takes you to the checkpoint in the world famous Honky Tronk café in Pontypridd!  Here you can stock up on food, Welsh hospitality and Tom Jones songs before heading out into the last section of the course.  With the end nearly in sight, the Xtreme runners head up and over Cefn Eglwysilan before the fast drop down into the finish and the wonderful welcome at the Coleg Y Cymoedd.

As the route is linear competitors park at the finish and are transported by coach, to the start in Brecon.

The event base, registration and race finish is at Coleg Y Cymoedd at the following location: 

Coleg y Cymoedd

Heol Cronchendy

Parc Nantgarw

Nantgarw

CF15 7QX 

The event base provides event parking, café, large indoor area for registration, the finish line, toilets, changing rooms and showers.  It is easily accessible off the A470 and one junction off the M4. There are many hotels, guest houses, cafes and restaurants in the local area.  In addition there are excellent bus and rail links to and from Cardiff.

An interactive map and gps file is available at the link at the bottom of the page.

To download the gps click on 'actions', then 'export' and follow the onscreen prompts. 

This is an extreme mountain challenge, and the route is unmarked.  There will be some additional markings provided where the route converges with the classic B2C route, and some additional signs in the dense forest sections, but you must expect to be self-sufficient in terms of navigation throughout.

There are 5 manned checkpoints which provide water, energy drinks, squash, sweets, biscuits, oranges, crisps.  The halfway checkpoint is indoors at Merthyr College in the town centre and is a great location to meet friends and family and you will have access to your drop bag and some time to get sorted, changed and ready to take on the final half!  Details of where the checkpoints are can be seen on the FAQ page.  The link is at the bottom of this page. 

As the route is linear you will park your car at Cardiff (Nantgarw) race HQ/registration and catch one of the busses (included in your entry fee) to the start of the event in Brecon.  The B2C Xtreme busses leave Nantgarw Race HQ at 0530 on Sunday morning.

The time limit for the event is 14.5 hours (9:30pm cut off).  Only runners finishing WITHIN the time limit will be eligible for a finishers medal.

There is a compulsory kit list that must be carried. This may vary depending on the conditions and can be viewed here. 

Saturday

1700-2000 Registration in Nantgarw

Sunday

0530 Bus pick up from Nantgarw and travel to Brecon

0615-0630 Registration in Brecon (only available if pre-booked*)

0620 Bus arrives in Brecon

0630 Race brief at Theatre

0700 Race start from Brecon

2130 Cut off time in Nantgarw

*If you would like to register in Brecon you can book this by e-mail after you receive the event notes two weeks before the event date. Please don't e-mail requesting to register in Brecon before this date as they will need to be re-sent.

Race entry, parking, coach transport and GPS tracking £80.

Optional extras:

Participation in a classic event

Electronic timing

Live GPS Tracking and map for friends and family to follow from Open Tracking

Open Tracking live mapping at race finish and halfway point

Race buff

Checkpoints well stocked with refreshments

Half way drop bag transport (at the Merthyr CP)

Finishers medal (strictly for finishers only)

Emergency First Aid and First Responder cover

Event photos

Car parking at the finish in Cardiff

Bus transport from Cardiff to Brecon on Sunday morning

Welsh weather (hopefully)

Entries open on the link below.