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Guernsey Ultra Gun31

20-Nov-2021 Guernsey, UK (Channel Islands)


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Trail Race Race Terrain
50KM / 31Miles
1 Day - 50 Runners

DIFFICULTY Race Difficulty Advanced  

Entry From £40 GBP

Start Midnight Saturday 20th November -  Cut-off 07:30 Sunday 21st November
Registration and kit check opens 2230hrs Saturday 20th November, closes 2330hrs.
Race briefing at 2345hrs.

A challenging 31 mile trail race, out and back at night on the beautiful and rugged cliffs of Guernsey in the Channel Islands. 

An ideal race if you are looking to gain experience of challenging night trail running or as a training race for a longer ultra. It is a tough race though so be prepared...

The adventure starts at midnight in an 18th century fort with views down to St Peter Port and the iconic mediaeval Castle Cornet. The route follows the cliff path - which is demanding in the daylight and even more so at night - right to the southwesterly tip of the island where the turnaround point and checkpoint is another fort almost entirely surrounded by the sea. 

This race is a different bag of nails to the Guernsey Ultra. In that race competitors get 5 hours to run the cliffs. Once. In daylight. In May... In this race the overall cut-off for the race is 7.5 hours (back before dawn) which makes it suitable only for experienced runners. The turnaround point has a 3.5 hour cut-off. It also includes some climbs and paths that are bypassed on the GU36 - to give you the full cliff experience! Around 2,700 metres ascent/descent.

Qualifying races and experience will be taken into consideration before entry is accepted. At a minimum with no ultra experience, this will be 3.5 hours for a flat marathon plus trail experience and training. Entry will be refunded (minus booking cost) if your entry is not accepted. If you are in doubt, please email us to check before entering.

You will be expected to be self-reliant. There are no checkpoints apart from the turnaround point so you must carry all the hydration and nutrition you require for 15.5 miles. At the turnaround there will be shelter, water and minimal food. If you choose to retire here (or are timed out) there is a walk of approximately one mile required to get to our transport.

There will be hot food and drinks at the finish and a tent should you wish to sleep after the race (bring your own sleeping kit).

The course will be fully marked so there should be no issues with navigation.

You will be given a tracker device so supporters (and race support) can track your progress. We will look after you on the race and pick you up if you decide to retire.

In addition:

  • No outside assistance (support crews or pacers etc.) allowed.
  • No drop bags - this includes placing supplies on the route for retrieval during the race.
  • No headphones or ear-buds - this is a condition of our insurance.
  • Mandatory kit includes a head torch with batteries sufficient to last the entire race and a backup torch. The weather in Guernsey in November can be extremely windy with driving rain etc. coming off of the sea so proper wet weather gear (jacket with taped seams, waterproof trousers, hat, gloves) is essential. You are also required to carry a mobile phone.

Guernsey Weather in November:

  • Average Temperature: 12° / 8°
  • Average Rainfall Days: 23 
  • Average Rainfall: 80mm
  • Average Wind Speed: 20mph
  • Chance of snow: Unlikely but not unknown
  • These are averages. Storms are common with gale force winds and hail.

Probably the only weather event that will cause the race to be delayed/cancelled is an electrical storm. This will be assessed on the day and the race start either delayed or the event may be cancelled if it is considered too dangerous to continue. In the case of cancellation, a refund of the race fee (minus booking) will be offered.

Medical Cover
Apart from first aid by race officials there are no special medical provisions. In the event of a medical emergency, given the small size of the island, services can provide assistance quickly from their usual locations. You are advised to check you are covered by your own medical (and/or travel) insurance as Guernsey is not part of the UK, the EU or the UK NHS.

Medal and tech t-shirt for all finishers.


Event Organiser
Peter Tiffin



Elevation: Very little change < 500 metres. Benign running terrain, not technical.

Suitable for: First ultra runners completing a marathon or doing regular long distance running in the last six months.


Elevation: Increase of up to 1000 metres

Suitable for: Runners who have completed at least one ultra distance race (or similar event) or are doing long distance running (>26 miles) regularly, with elevation shown.


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.


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

Suitable for: Experienced runners who have completed at least regular ultra distances 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 evidence of recent qualifying race participation and recent medical examination certificate. Check with the race organiser regarding entry requirements.


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

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 evidence of recent qualifying race participation and recent medical examination certificate. Purchase of specialist kit is often recommended for these races.

Endurance - Multi-activity

Type: 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.

Global - Virtual

Type: 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.

Review Guernsey Ultra Gun31

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06:03 20-11-18

The race setup was very professional, with full kit check and gps tracking of all the competitors. Add in the roving marshals and the welcome checkpoint at the half way point, I don't recall a race on this scale where I've been so well looked after.

The course was almost flawlessly marked, but no less challenging than during daylight - except that you can't see what's coming next. The cliff paths were so peaceful at night, and with the clear starry skies and the sounds of the sea below making for a serene night of running, despite the endless climbs and descents.

Seeing the leading and chasing headtorchs at various points as you crested a climb, or rounded a corner, was great motivation to keep moving, and watching the sky start to colour for dawn helped to stay focussed during the latter hours into the welcome finish, complete with coffee and bacon butty.

You get a real sense of being out in the wilds, and the route offers a good opportunity to test out night running kit, in a well supported friendly environment. The 15 miles to the only checkpoint also makes for great prep for longer races, ensuring your kit and plans are up to the task.

The medal is massive, if that's your sort of thing, though I didn't dare wear the race shirt through Guernsey customs the next morning with 'I'm a gun runner' emblazoned across the back ;)

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