Beast of the Blacks 10, 20 and 40 Mile Trail Running Challenge

Saturday 14th March 2026

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Distance 20 Miles/32.5 KM 40 Miles/65 KM — Distance
11 Miles / 17 KM
20 Miles/32.5 KM
40 Miles/65 KM

Start Location Perth Y Pia — Start Location
Longtown Hall
HR2 0LD

Elevation 20 Mile: 4553 Feet 40 Mile: 9106 feet — Elevation
11 Mile: 2837 FT
20 Mile: 5554 FT
40 Mile: 11108 FT

Finish Location Perth Y Pia — Finish Location
Longtown Hall
HR2 0LD

Cut Off Times 20 Miles: 8 Hours 40 Miles: 16 Hours — Cut Off Times
11 Miles : 5 hrs
20 Miles: 8 hrs
40 Miles: 16 hrs

ENTER NOW

The Beast of the Blacks 10, 20 and 40 is a great challenge amongst some spectacular, harsh but stimulating trails within the Majestic Black Mountains of Wales. Attracting runners from the elite to the beginner you will not be disappointed by this event. The event will be marked with the added support of marshals. Generous cut off times of 5 hrs for the 10 mile, 8 hours for the 20 mile route and 16 hours for the 40 mile route will ensure that you can tame the beast. The 40 mile event will be a reverse of the 20 mile loop so whatever scenery you miss on the first lap, you can capture on the second lap.

Starting in Longtown, you will climb directly onto the Black Mountains. Greeted with outstanding views that will follow you around this beautiful route whilst taking in forest trails, mountain tops, river crossings and ancient churches. Red kites will be your companions besides an abundance of wildlife. Spring into Spring and enjoy the Mountains at their very best.

This is a canicross friendly event. Dogs must be at least 12 months of age, fit to run and kept on the lead at all times. Owners take full responsibility for their dogs both at headquarters and on the route. Unfortunately, due to the added benefit of having a bit of extra ‘pull’ from your four-legged friend, we cannot allocate trophies to any canicross participants.

We look forward to seeing you there!

Checkpoints

Our checkpoints are well stocked so you’ll be well fuelled throughout the day. We cater for all dietary requirements including vegan. At our checkpoints, you can expect to be met with nuts, bananas, sweeties, biscuits, crisps, electrolytes, coke, squash, water and if you’re very lucky, some homemade cake!

CUT OFF TIMES-START TIMES

APPROX-TBC BY EMAIL PRIOR TO THE EVENT

FRIDAY NIGHT PRE REG 4PM - 8PM

MORNING REGISTRATION time TBC

10 MILER - 9AM REG - 9.45AM BRIEFING - START 10AM

40 MILER - 7AM REG - 7.45AM BRIEFING - 8AM START

20 MILER - 8AM REG -8.45AM BRIEFING - 9AM START

START TIMES WILL BE CONFIRMED VIA EMAIL - SUNDAY BEFORE THE EVENT

WHAT TO EXPECT

Facilities

Camping
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

STALLS

VOUCHERS

What You Get

Bespoke medal
Prizes - 1st 2nd & 3rd Handcrafted trophy, designed in Wales - totally unique to us
1st Male & Female Vet over 50
Canicross trophy
Parking tickets will go into a ballot - winning ticket will receive a free entry to our next event
Best picture advertising Limitless Trails on Social Media during this event will win a free entry to our next event - Tag @limitlesstrails on Instagram
Two refuel zones - full support from our amazing staff - refreshments and food - first aid
PLEASE NOTE - 10 MILE CHECK POINT 1 IS JUST OFF THE ROUTE - THIS CP IS OPTIONAL
Full gallery of pictures
Online results
Refreshments, homemade cake, snacks, sandwiches and much more will be available to feast on after the event. All dietary requirements will be tailored for.

MANDATORY KIT

Waterproof Jacket and trousers
Race vest/pack
Base layer Top - Must be either synthetic or merino wool, we suggest spare socks
Capacity to carry 1 litre of fluid
Emergency Food for the duration
Map or gpx file downloaded
Fully Charged Mobile Phone + power pack (40mile only)
Hat & gloves
Appropriate footwear (trail shoes)
First aid kit - essential items
Foil blanket
Reusable Cup
Head torch & whistle + spare batteries

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.

We are delighted to be welcoming our friends from SoleMate, an inspiring, independent, local specialist running shop. They will be on site throughout the weekend, showcasing some of their products, and they provide an online option for any last-minute or forgotten kit requirements!

https://www.sole-mate.uk/