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Beacons to the Blacks Ultra 50 & Marathon

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Saturday 18th September 2021

Entries Open
Thursday 5th November 2020
Entries Close
Wednesday 8th September 2021 at 22:00
Entry Fees
Ultra 50 Mile   £80.00   
Marathon   £55.00   
Event Organiser - Ellen Wood

To enter you must first Log In or Register your Details with SiEntries.

Limitless Trails are very excited to be offering our reverse Ultra marathon 50 mile / 80 km and Marathon 26 mile / 42km- starting on the Beautiful Brecon Beacons and finishing deep in the heart of the Black Mountains set in the Brecon Beacons National park.

This long distance challenge is one that will fulfil the elite and seasoned runner besides also offering amazing support for the less experienced trail runner who may be looking to step up a gear and attempt a greater challenge with the knowledge that they will be receiving incredible support and checkpoints throughout the duration of the run. Support crews and supporters will be most welcome during the event (COVID restriction allowing).

Start Venue: Gilestone Farm Talybont on Usk Brecon LD37JE

Finish Venue Perth y Pia Outdoor Activity Centre, Llanbedr, Crickhowell, NP8 1SY


Participants will be transported to the start from the finish. The Marathon and the Ultra will BOTH be starting at Gilestone Farm at 8am.
Registration will be at Perth y Pia on Friday Night from 6pm - 9pm and Saturday Morning at 6am - 7am.
Transport will be leaving Perth Y Pia at 7am.

What you can expect from this event 

Friday evening the Team will welcome you to Race HQ at Perth Y Pia– camping and parking will be available at PYP. Registration and kit check will be available for an easier pre-race morning. For those unable to attend Friday please do not worry as there will also be registration available from 6am-7am Saturday morning. Transport to the start will be arranged. 

This Trail Challenge is a self- navigation experience however we will be supporting certain areas that may lead to some confusion with flags and signs. Our pledge not to use tape stands. Participants will be tracked by our team throughout the entire race. Family and friends will be able to monitor and support each and every one of you. A GPX file and a map will be provided.

Each competitor will pass a stringent kit check during registration and at the main CP Zone on route. Mountain Rules set by the Local Mountain Rescue Team must be obeyed.

There will be incredible support on your challenge, first class Medical team and mountain medics on the route. Our aim is to ensure that your experience will inject confidence with the knowledge that  the Limitless Trail Team will do everything to make this challenge an amazing achievement and experience, whether it’s your first attempt at a 50/26 miler or not, hopefully it will inspire you to achieve and fulfil future goals and aspirations that you may have to push that bit further.

On route we will be supporting you with  Check Points and water stations,  but to go that step further we will be providing hot food where possible. Medical advice given to any runner not to continue must be followed, if not then the organisers do not accept any responsibility if the participant  continues. They do so at their own risk. We will have a team of physiotherapists on site to offer any light relief.

Support crews, friends and families are more than welcome to attend (COVID restriction allowing) the Eat Zone however we do ask that runners take president over all. Please keep noise down to a minimum due to this being a small residential area and be considerate when parking. More details will follow shortly.

During the event you will also be supported by a full mobile medical unit, support runners will be on the course at various locations if needed for vital support – both experienced within this Mountain Range.

Before entering the event please have a thorough read through our COVID-19 participant guidelines.

Cut Off Times

  • 50 miles = 24 hrs
  • 26 miles = 12 hrs
  • The 50 mile event will take in both highest peaks in both the Black Mountains and the Brecon Beacons
  • The 26 mile will take in the highest peak in the Black Mountains


  • 90% self-navigation with 90% trail 10% road (lanes) - Ability to read a compass is mandatory.
  • Any runner who assists an injured participant / or similar will gain a time reward.
  • Hot & Cold Food and drinks will be available at HQ at the finish
  • Besides all this incredible support you will also be rewarded with our bespoke Medal, free photos, results and chip timing/tracker. Winning bespoke trophies and a few surprises thrown in.
  • Moon & Back Coffee will be at HQ throughout the event serving speciality drinks and cakes for family & friends (COVID restriction allowing). Fresh hot food will be available at the finish for purchase/ supporters 
  • Brief route outline 50
  • Starting at Gilestione Farm Talybont  the route takes you straight up towards Pen y Fan via Fan y Big and Cribin-  Pen y Fan the highest point in south Wales. Leaving PYF you head over Corn Du and drop down to the Storey Arms before heading back up to the ridge, following Graig Fan Du you drop down and cross the valley heading towards Pontsticill Resevervoir before once again climbing to Waun Rhydd and joining the Marathon route 26 - The marathon route will head from Gilestone Farm up the Taff Trail adjacent to the reservoir before joining the 50 mile route near Tor y Foel. Taking the Beacons way you head towards Llangynidr before crossing to climb Mynydd Llangorse, The Dragons Back and hitting Waun Fach in the Black Mountains before your decent back to Perth y Pia .
    Both route maps will be available soon.


  • ULTRA 50 HEIGHT GAIN = 10442FT


  • Camping @ Perth y Pia
  • Refreshments
  • Toilets
  • Parking £5 - Parking tickets will go into a ballot - winning ticket will receive a free entry to our next event
  • Full Medical Team
  • What you get
  • Bespoke medal, complimentary gift - refreshments
  • Chipped timing and Tracking
  • Prizes - 1st 2nd & 3rd Male & Female, Handcrafted wooden trophy, designed & hand-carved in Wales - totally unique to us 
  • 1st Male & Female Vet over 50
  • Best picture advertising Limitless Trails on Social Media during this event will win a free entry to our next event - Tag @limitlesstrails on Instagram
  • Four refuel zones plus water stations - full support from our amazing staff  - first aid 
  • Full gallery of pictures 
  • Online results
  • Free celebratory hot & cold drinks along with delicious warm or cold food after the event for each participant.
  • All dietary requirements will be tailored for.



  • Waterproof Jacket and trousers
  • Race vest/pack
  • Baselayer Top - Must be either synthetic or merino wool, we suggest spare socks
  • Capacity to carry 2 litre of fluid
  • Emergency Food for the duration
  • Map or gpx file downloaded
  • Fully Charged Mobile Phone + back up
  • Hat & gloves
  • Appropriate footwear (trail shoes)
  • First aid kit - essential items 
  • Foil blanket
  • Reusable Cup
  • Head torch & whistle + spare batteries
  • Anti bacterial gel, mask & gloves 

No participant will be allowed to participate without the full kit. A full kit check will be undertaken at registration and spontaneous checks will be carried out on the event. There will be NO changes to the mandatory kit lists due to weather - the mountains are unpredictable.

Please note that we are a cup free event - please remember to bring your reusable cup

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