Rasus y Bannau

2 May 2026 - 3 May 2026
Brecon, uk
YOUR RATING:
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mountains race
100 KM
2 days
500 Runners
Alternate Distances: 
72 KM
   
62 KM
Difficulty:    Advanced
ENTRY FEE:    99.00 gbp

Rasus y Bannau (The Beacon Races) are 3 epic, long distance running races starting and finishing in Brecon and following a circular route around the Bannau Brycheiniog (Brecon Beacons) National Park.  There are 3 race distances to choose from:
100 k (63miles / 101km) with +5100m ascent
Ultra 45 (45miles / 72.5km) with +3500m ascent 
Marathon (26 miles / 42km) with +2000m ascent 
The Routes
All 3 routes start in Brecon town centre, with a direct ascent up the iconic North ridge of Cribyn.  From here runners head east to Fan Y Big then follow a fast ridgeline traverse towards Carn Pica followed by fast descent down to Tal y Bont reservoir.  After crossing over the old dam, both the Ultra routes head up to the summit of Tor Y Foil, whilst the marathon skirts around.  The routes then converge with a short and runnable (if you have the legs) section up the Taff Trail towards Torpantu and CP2. 

Shortly after here the marathon and ultra routes split again, with the marathon runners heading up the ‘gap’ road eventually summitting Pen Y Fan via Jacobs ladder then dropping down the North ridge to Brecon and the finish.  The Ultra routes follow the ridge line up to Cefn Cul and Craig-Gwaun Taf, descending to Pont-ar-Daf, the Storey Arms and CP3.

Both ultra routes then follow the classic routes over Fan Fawr and Fan Llia to CP4 in the Blaen-Llia car park.  Here the 100km and Ultra 45 races split with the Ultra 45 heading towards the stunning Graig Cerrig Gleisiad Nature reserve and the 100km runners heading further West towards the Black Mountain. 

The 100km runners follow the Beacons Way footpath eventually topping out on Fan Brycheiniog on the Carmarthen Fan (the Black Mountain).  Then the journey heads back east with a dramatic rollercoaster ride across mountain tops as the follow the South Wales Traverse line to CP5, Fan Gyhirych and Fan Nedd. 

The 100km runners re-join the Ultra 45 route shortly after CP6 with a beautiful climb through the Graig Cerrig Gleisiad Nature reserve to the top of Fan Frynych, before following the Beacons Way back down to Storey Arms and CP7 (100km) / CP5 (45mile).

The final leg takes you up to the summit of Pen Y Fan and a fast enjoyable descent down the North ridge to Brecon and the finish.

Map and Gps

For an interactive map and gps file of the provisional route please go to the link at the bottom of the page.

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

Navigation
The route is marked at major junctions with running arrows and you must also be able to follow the published route using the gps trace.  For a competent ultra runner the route is relatively simple to follow using gps alone and typically follows obvious lines, mountain trails and footpaths on well established paths and mountain trails.  Whilst there will be safety teams and marshals around the course, ultimately it is the participants responsibility to follow the published route using a combination of the gps trace, map, compass and markers.

Checkpoints

There are 8 checkpoints for the Rasus y Bannau 100km, 5 CPs for the Ultra 45 and 2 for the Rasus y Bannau marathon.  They will provide refreshments, water, energy drink, sweets, biscuits, crisps, sandwiches, noodles, soup and more substantial food.  In addition there is a drop bag available for the runners on the 100km and Ultra 45 which will be available at CP4 Blaen Llia Forest (mile 30). 

Checkpoint locations are provide on the FAQ page (Q17) and can also be seen on the interactive maps on mapometer (links at the bottom of the page). Details of what is provided at checkpoints will be published soon, but you can expect it to be similar to our other long distance events such as the Black Beacons and a guide is available on the blog here.

Time limits and start times 
The Rasus y Bannau 100 km race starts at 0730 on Saturday mourning and has a 24 hour time limit (Sunday 0730). 

 

The Rasus y Bannau Ultra 45 mile race starts at 0730 on Saturday mourning and has a 24 hour time limit (Sunday 0730). 

The Rasus y Bannau Marathon starts at 0830 on Saturday mourning and has a generous 15 hour time limit (Saturday at 2330). 

Registration, Start and Finish

The event registration, start and finish is in Brecon at Llanfaes Hall, 25 Church St, Brecon. LD3 8BY.
Parking is in one of the many pay and display car parks in Brecon town centre.  Details of the best locations will be sent out in the pre-event emails. 

 

Accommodation
There are numerous accommodation facilities in Brecon and the surrounding areas.  These include bed & breakfasts, hotels, air b&Bs, bunkhouses and campsites.  The following links take you to a list of the various accommodation types although a google search is by far the best way to organise accommodation suitable for your taste.
Campsites

Hotels
Accommodation

Compulsory Kit

There is a compulsory kit list that must be carried. This can be viewed here.

Experience
These are challenging mountain routes.  To enter you must be in good fitness and be able to complete the distance you have registered for.  You must also be able to follow the course using a suitable combination of the gps trace, signs and map.  You must be able to look after yourself in a potentially hostile mountain environment and in extreme weather. 

Timetable – including Start and Registration Times
Friday
1900-2200   Registration for all courses in Brecon.

Saturday
0600-0700   Registration in Brecon for the 100km and Ultra 45 mile runners only
0715             Race brief for the 100km and Ultra 45 mile runners 

0730             Race start for 100km and Ultra 45 mile

0700-0800   Registration in Brecon for the marathon runners

0815             Race brief for the marathon runners
0830             Marathon starts

2330             Marathon course closes

Sunday
0730              All ultra distance courses close

Prices
There are 3 race distances available for competitors and you can select the appropriate options when you sign up online. 
 
Rasus y Bannau 100km ultra (£99)
Rasus y Bannau ultra 45 mile race (£75)
Rasus y Bannau Marathon race (£50)

Event T-shirt (£15)

Event hoodie (£35)

What your entry fee includes

Checkpoints with refreshments
Finishers medal
Race buff
Emergency first aid cover and mountain safety teams
GPS file
Route marking
1 drop bag for the ultra 45 and 100km race at 30miles
Free race photography for downloads and bragging
GPS tracking and timing for all runners

Are you the race organiser?

Event Organiser

Sian Parry

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Global - Virtual

Elevation

A virtual race which can be run at any time shown on the dates shown, on any type of terrain in any country.

Suitable for

For runners from beginners to experienced as you choose your own course and challenge based on the guidelines and options set by the virtual race organiser.

Endurance - Multi-activity

Elevation

An ultra distance race including at least two of the following activities such as running, swimming, cycling, kayaking, skiing and climbing. It may also include different climatic conditions (eg ice, snow, humidity, cold water, mud or heat).

Suitable for

Experienced multi-skilled athletes who have trained for the different activities included in this event. Admission to these races may be subject to receipt of a recent medical examination certificate. Check with the race organiser regarding entry requirements and any specialist equipment required such as a wetsuit, skis or a mountain bike.

Brutal

Elevation

Increase of up to 2000 metres with very challenging climatic conditions (e.g. ice, snow, humidity, heat or at high altitude)

Suitable for

Very experienced long distance ultra runners (min 3 years’ experience) or are doing regular long distance running (>50 miles) with elevation and conditions shown (where possible). Admission to these races is often subject to receipt of a recent medical examination certificate. Purchase of specialist kit is often recommended for these races.

Expert

Elevation

Increase of up to 2000 metres with some challenging climatic conditions (e.g. ice, snow, humidity or heat)

Suitable for

Experienced runners who have completed at least 4 ultras in last 12 months, or are doing regular long distance running (>50 miles) with elevation and conditions shown (where possible). Admission to these races may be subject to receipt of a recent medical examination certificate. Check with the race organiser regarding entry requirements.

Advanced

Elevation

Increase of up to 1500 metres

Suitable for

Runners who have completed several ultra distances or similar events, or are doing long distance running regularly, with elevation shown.

Intermediate

Elevation

Increase of up to 1000 metres

Suitable for

Runners who have completed at least one ultra in last 6 months or are doing long distance running (>26 miles) regularly, with elevation shown.

Beginner

Elevation

Very little change < 500 metres

Suitable for

First ultra event. Runners completing a marathon or doing regular long distance running (>26 miles) in the last 6 months.