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Blackwater Trail Events

  • (This event has been postponed until further notice)

This event has been postponed

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Starting in Chelmsford, runners follow footpaths across the impressive countryside. With half marathon, marathon and ultra distances to choose from runners of all abilities can find the race that suits them. Come out for the finisher's medal or the race-day flapjacks.

Blackwater Trail Events routes

Runners hit the road in Chelmsford and follow a series of footpaths along the waterways toward Heybridge Basin, where the half marathon participants will end their race. Full marathon runners continue through to Saltmarsh coastal footpath beyond Goldhanger and out to the Wick Nature Reserve. There will be a shuttle service taking passengers back from the half and full marathon route.

While the steelier runners will continue on their ultra route back towards Heybridge Basin along the same coastal pathways.

Event Details

What’s Included
  • Race entry
  • Professional chip timing
  • Shuttle service
  • Aid stations
  • Refreshments and snacks throughout
  • Finisher's medal
  • NB: There are no refunds offered on Hare & Tortoise Events
Raceday Logistics


08:30 - Ultra Start

09:00 - Half Marathon & Marathon Start

Please ensure you arrive with plenty of time to get parked, registered and warmed up before tackling this epic challenge.

Please Note: There will be no shuttle to take ultra runners from the finish of the ultra at the end of the event back to Chelmsford.


Please encourage all your friends and family down to the event to cheer you on, it not only helps your morale but the morale of other racers as well.

Frequently Asked Questions

Is there a bag drop at the Blackwater Trail Ultra?
There will be a bus from the race start to both Heybridge and Tollesbury to take any bags to the finish points depending on the race distance.
Is there parking near the Blackwater Trail Ultra?
Yes, there is plenty of parking in Chelmsford near the starting line.
Will there be aid stations and nutrition provided at the Blackwater Trail Ultra?
Yes, there will be aid stations at every ~3 - 5 miles that will be stocked with flapjacks, sweets, jelly babies, biscuits and fresh fruits and nuts. There will also be a place to refill your water bottles.
Do I need to bring my own cup or water bottle to the Blackwater Trail Ultra?
Yes, you do. In an attempt to protect the environment this event is cupless so participants will need to bring a bottle or cup to refill at the aid stations.
Can I get a refund on Hare & Tortoise Events?
Unfortunately, due to the nature of the events and initial up front costs required, there are no refunds offered on any Hare & Tortoise events.
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Blackwater Trail Events weather forecast

Light rain until evening.

Predicted highs
Predicted lows
IconHigh chance of rain
IconModerate breeze possible, up to 12mph

Meet the organizer

It's our aim to provide premier running events throughout Essex and the South East for all abilities. ​ Between us, we have accumulated more years running than we like to count and participate in as many races as we think we can get away with (either to stay injury-free or just to keep the family harmony)! ​ We think that this gives a really good idea about what makes for great running events and our aim is to provide awesome events with runners always at the heart of what we do. ​ We also recognise the enormous benefits of running for general well-being and mental health and want to encourage participation at every ability and for any age. For this reason, we have set up a running group to operate within the Run Together initiative.

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