XNRG 2024 events now open for booking!

No. of days 1 day

Distance 50 mi

Ascent gain 242 m

Accom. no

Food yes

30 miles:

Distance 30 mi

Ascent gain 109 m

A 1 day ultramarathon allowing you to take in all the beauty of the Essex Riviera, organised by c2c on behalf of the Railway Children Charity. All monies raised from entry fees and donations will go directly to the charity.

With a choice of 50 or 30 mile distances the runners and walkers will register at Fenchurch Street Station before boarding a private train that will take them to the 50 mile start at Upminster and the 30 mile start at Tilbury. The route will in general follow along the Thames going east, utilising the London Loop and England Coast National Trails. The going underfoot is mainly tarmac with some hard trails in sections. The scenery is a mixture of urban, marsh land and river bank, with some amazing views of this part of the Thames and Greater London.

Kinetic SportsCheck out Kinetic Sports for help with a training plan.


The Railway Children Ultra Marathon

We are delighted to support SheRACES and commit to providing a great experience for female participants. Find out more


  • Transportation from Fenchurch Street Station to the starts
  • A fully recced and marked route
  • Full medical cover throughout
  • A quality finishers T-shirt and medal
  • Toilets, showers and changing facilities
  • Checkpoint food and water at regular intervals
  • Free tea, coffee and cake at the finish
  • Prizes and trophies for overall and category winners
  • A great atmosphere and a fun but challenging day out
  • Action photos en-route, free to download
The winners, runners up and age group winners will receive fantastic prizes or vouchers from our sponsors.


You will be taken from Fenchurch Street Station to your starting point - for the 50 mile route this will be at Upminster Station and for those opting for the 30 mile route, the start will be at Tilbury Station.

The finish for both routes will be at Southend Central Station.

Showing route for:



Registration opens at Fenchurch Street Station


Train leaves for starts


50 mile route starts


30 mile route starts


Finishers start arriving and prize givings


Last finishers expected


Entry for 50 miles


Entry for 30 miles


All money raised will go to the Railway Children charity.

Please note: a 2.5% service charge, levied by the registration software, will be added to your total. We are using a new entry system that takes payment through the secure system Stripe. No payment information is retained by Extreme Energy, or our entry system tool.

Email us on info@xnrg.co.uk if you have any questions about your options.

Book now

If for some reason you are not able to make the event you have entered. The XNRG refund policy is that we will give you 70% refund of your entry fee up to 1 month before the start date of the event. You also have the option (1 month before the date of the event) to get a 100% transfer credit to another one of the other Humanity Direct 1 day events, or you can donate your entry fee to the charity. All entry fee money goes directly to the charity and directly to helping children with life changing operations. These options you can execute on your Ultrabritain entry page.

After this time we are sorry there will be no refunds or transfers to future events. Refunds will be to your booking credit card.

Race-day Preparation

Kit List

The only compulsory kit is a fully charged mobile phone and a minimum 500ml of water, but it's worth taking a look at our recommended kit list.

Other equipment may be made compulsory by the race director depending on the weather.


The event is supported by a Course Manager and a fully qualified medical crew will be in attendance. We strongly recommend taking a moment to read our medical page before booking.


We've answered a range of common questions in our FAQ. For other questions, say hello on info@xnrg.co.uk.

More Information

As with all our events, we'll take care of everything so you can focus on walking, running or jogging the trail. Transportation from Fenchurch Street Station to the starts, free photos, changing facilities, and plenty of tea and cake are all included.


Entries will close one week before the event (or when full). A waitlist option will be available if the event becomes fully booked.

Navigation and Support

The event is supported by a course manager to maintain event safety and a fully qualified medical crew will be in attendance throughout.

Aid stations

There will be checkpoints at regular intervals with water and food - four for those taking part in the full ultra and two checkpoints for the half ultra. Please bring your own cups.

Due to the risk of cross contamination, we cannot provide checkpoint food to suit all dietary requirements. If you require special food or snacks to suit any allergies or vegetarian/vegan diets, can you please bring your own. Put them in containers, marked with your name and checkpoint number and give them to the checkpoint teams at the start of the race.

Trees Not Tees

As part of your entry fee you will get an event T-shirt, or you can choose not to have the T-shirt and the money we would pay for the T-shirt will go to Trees not Tees and a tree will be planted instead.

For more details visit their website - https://treesnottees.com/

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We can't wait to see you there! Questions?

For questions about your entry i.e. cancellation, refunds, changing distances please email events@railwaychildren.org.uk

For questions about the event itself i.e. the route, the aid stations, race day logistics etc. please email info@xnrg.co.uk

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