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Kings Forest 50k

12-Oct-2019 Kings Forest, Bury St Edmunds, UK (England)


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Trail Race Race Terrain
50KM / 31Miles
1 Day - 200 Runners

DIFFICULTY Race Difficulty Advanced  


Event Organiser
Kevin Marshall (Positive Steps Events)



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.

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05:12 31-03-21

This is a relatively fast, flat 50k trail race held amongst the fire tracks and forest paths of Kings Forest. The Thetford Forest area is known for being a forestry area with many wide, straight paths crossing each other at right angles which means many parts of the route all look the same as each other and it could be impossible to avoid getting lost - but both times I've run it, the signage has been up to scratch and it's not hard to keep to the route. As well as those wide-open paths, its a varied mix of everything you'd expect running through a mixed forest, with heath areas, dense overhanging tree areas, grassy hillocks, some winding paths and even a bit of sand along the two-and-a-bit laps. Never a dull moment, a friendly atmosphere and it was well crewed by enthusiastic volunteers.

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07:57 02-03-21

I entered the Kings Forest Ultra before the Covid-19 situation disrupted the country and was unsure as to whether it would be going ahead.

Sure enough, the team went out of their way to put on an event for us, with it then being staged in West Stow county park rather than the Kings Forest due to being turned down by the forestry commission. Due to the slight change of location, the event temporarily changed its name to the Beowulf Ultra.

The event would usually be a few laps in the Kings Forest, but due to the change of location, this now became 31 x 1 mile laps in the country park. Needless to say I was a bit apprehensive of the monotony of that many short laps, however I needn’t have worried.

This gave me the opportunity to chat to a lot of the runners throughout the event which would not have been possible if it was set up like the original proposed format, especially those who were quicker or slower than me and it was nice to see familiar faces throughout the day. This definitely helped towards the latter end of the event when the going got tough.

Another bonus of this format was that we were only ever 1 mile away from our drop bags which made it easier in terms of hydration and fuel, not needing to have to wear a vest the whole time.

The team put together a great event and all the volunteers were extremely friendly and provided great moral support for the duration of the event. Covid guidelines were fully enforced, mask to be worn at the checkpoint, staggered start times etc.

Would just like to say thank you to everyone who organised, volunteered and entered the race and made my first ultramarathon one I will never forget!

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10:04 21-05-18

11th November 2017
King forest ultra (with Positive Steps) marathon 50k
My first ultra and my 5th marathon in 5 months and you could say I was a bit nervous. I turned up to West Stow (near Bury St Edmunds) parked up and went to get my race number and the amount of people I bumped into was crazy I’m starting to recognise people. I got to start line and I thought I get near the middle this time and they said 4 laps. We had a 2 min silence before we started and then we where off. After 3 miles I was going to throw in the towel as I wasn’t feeling it so I push through it as I think it was just nerves. I keep pushing and before I know it lap one was done.
On lap 2 I was chatting away to others runners and having a laugh and before I know it the miles was ticking off quickly and I remembered the route and how long I had left and lap 2 was a lot better than 1 and I’m getting into it. Lap 2 finished and I know I’ve got a pb on half so I made sure I fuelled and went on my way again for lap 3. Around the lake I see other runners standing there and it clicked it was 11:00 so I waited with them for 2 minuets silence for Remembrance Day and then went on my way.
I was getting nervous with lap 3 as I was waiting for my calfs to cramp up so I keep pushing myself and it starting to get long but the people around does help you and you keep going. After mile 17 miles the cramp kicked in so I went into my bag and got a bottle of pickle juice and had a big mouth full and almost sick, put it back in my bag and pushed on.. it stop so I keep pushing on and the quick ones started to lap me so I keep on going. Final lap to go and I congratulate the people who have finished then I set off for the last time, now I have a battle in my head known what’s coming and doing it again, I checked distance and time and I was on for a PB on a marathon by 15 mins so I keep at it and I got there nocking off 15 mins, other runners congratulations me known I got a PB had a laugh then carried on.. mile 28 and I just wanted it to be done and found it so hard to run but 5k left so I ended up walking the rest as I was almost dead. 1 mile to go I found some energy and started running and keep going to the end where my kids where waiting for me to cross the line again with them. PB on half, full and longest run. My first 50k done and doing it again this year.

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01:40 14-01-16

I ran this as my first ever ultra in its inaugral year in 2014. It was ideal for a first ultra, being flat and runnable and well organised with no navigation required. The volunteers were great and the CP well stocked. When someone rubbed away an arrow marker on the first lap, the organisers went out of their way to help those affected to add a bit of distance to ensure they completed 50k. It was a great experience for me at the time. I'm not sure I would be quick to enter again as laps aren't my favourite kind of race and I now prefer more challenging terrain. However, if you are new to ultras or it's local then it's definitely worth a go.

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