All 5k events in this country are currently suspended due to COVID-19 (Coronavirus). For further details please see here.

The Course

The course is 5000m (5K) long. This has been accurately measured by us with a professional measuring wheel. The course is at the University of Hertfordshire Sports Village, De Havilland Campus, Hatfield. The course is run on a mixture of grass, tarmac paths and concrete paths. Some sections of the course may accumulate mud, leaves and puddles after rain. Dependent on availability, marshals will be at key sections of the course, or signs will be in place.

Please remember that the parkrun uses shared paths. For the continued success of the event, please give way to other park users. This won't hurt your time, it won't stop you from getting a PB and it will make sure everyone continues to enjoy the event.

Please, wherever possible walk, jog, cycle or use public transport when attending the event. If you do have to drive, please consider car-sharing to reduce our impact on both the environment and other park users. Please also watch out for other park users when arriving and leaving. Parking may be limited so try to arrive early.

Course Safety

The Ellenbrook Fields parkrun is a fun, free event organised by volunteers for the benefit of everyone. We wish to make the run as safe as possible, so runners, spectators and helpers are asked to take care about the following:

  • Please be considerate to the park and other park users at all times.
  • Children under the age of eleven must be accompanied (within arm's reach) throughout the run by a parent, guardian or appropriate adult of the parent's choice.
  • Please arrive by foot, by pedal-power or by public transport if you can - your efforts help to reduce our impact on the park and the planet.
  • Please consider volunteering to help occasionally - this event survives only because of your generosity - please visit the volunteer page for more information.
  • Take care near roads and car parks - some vehicles drive very quickly. Please congregate away from the cars and be careful in particular if you have children. If you’re driving to the run, please drive carefully even if you’re late!
  • When running, take care on uneven surfaces - whether on grass or on tarmac. Watch out for cyclists, other runners, pedestrians, children, dogs, wildlife, park animals, vehicles, park maintenance work, falling branches, bollards, posts and other obstacles around the course.
  • Please ensure that you are fit enough to walk, jog, run 5k (3.1 miles) with us. Health advice about running can be found at the excellent Runners' Medical Resource website (although this external website focuses on preparation for a race and does not describe parkrun events).
  • Remember to warm up before the run.
  • If you see a runner with a serious problem, please stop to help them out and get help as soon as possible.
  • If you’re watching, keep clear of runners on the course, and look after any children and dogs you may have with you.
  • It is not permitted to run with a pushchair and a dog at the same time.
  • Lyme Disease is a bacterial infection spread to humans by infected ticks. Consider protecting yourself by wearing repellent when at parkrun events in grassy or wooded areas. See for further details.
  • You are welcome to take part with a dog, but please keep the dog on a short lead or short harness and under control throughout the event. Please also review the parkrun support page article about running with a dog at parkrun events.
  • Runners pushing buggies are welcome, but please take extreme care of other runners around you. If possible start from the back of the field and try to keep to one side of the main body of runners.

We hope these tips help to ensure that Ellenbrook Fields parkrun is fun and safe for everyone.

Age Grading

All parkrun events use Age Grading to help parkrunners compare results.

Age Grading takes your time and uses the world record time for your sex and age group to produce a score (a percentage). This score allows you to compare your personal performance against other people's performances even though they might be a different age and a different sex to you - the higher the score the better the performance. The scores can also be compared across different race distances - to allow you to, for example, compare a 5km time against a marathon.

For more information, please see our Support page.

Course Map

Course Description

This scenic course is one anti-clockwise loop of Ellenbrook Fields with an inner loop near the start.

The terrain is predominantly flat and comprises mainly grass, the remainder being tarmac or concrete paths.

The course starts on a wide tarmac road and then turns sharply left on to a narrow concrete path before turning left and left again on to a grassy path, past the first km point and back toward the start. The first half of this loop is then repeated before the course heads west and into the open countryside. The runners then pass through two marshalled gates before heading south and then west again towards the furthest perimeter of the Fields. They then head south before re-joining the original tarmac road and heading east past the start and a final sharp right will take them to the finish.

Features of the old Hatfield Aerodrome can be seen around the course and the start is on the former taxiing strip.

There are signs and marshals at all significant turns, to guide participants around the course.

The start and finish are both at the south-east corner of Ellenbrook Fields, close to the parking areas and the cafe facilities.


Parking: The road to Ellenbrook Fields (Albatross Way) is a frequently used bus route (parking is not permitted on this road). Free parking is available in the main de Havilland Campus car park (AL10 9EU) accessible from Mosquito Way. Make your way to the far end of the car park, parking near the Sports Village. Make your way behind the Sports Village where you should see signs directing you up towards Ellenbrook Fields.

Toilets: You may use the facilities in the Swim Centre, but please ensure that you REMOVE ALL MUDDY SHOES before entering the building.

Getting There

Location of start

The run starts at the south-east corner of Ellenbrook Fields, close to the parking areas and the cafe facilities.

Getting there by public transport

The nearest bus stop is "Hatfield, UH de Havilland Campus", and is on many local routes.

Getting there on foot

The nearest railway station is Hatfield, on the Kings Cross to Peterborough line. The UNO 341 bus travels from the station to the UH bus stop - timetable available on the uno website.

Getting there by road

If using sat nav, the nearest postcode is AL10 9EU, also see the Google Map of this location.

From the A1 motorway : Exit at Junction 3, exit the roundabout onto the A1001, then follow the directions as per the A414 route below.
From the South West on the A414 : When you reach the A1 Junction 3 roundabout, take the 1st exit. THEN - Continue for around 1/2 mile to the "Comet" roundabout with the Ramada Hatfield hotel on the left, and take the first exit.
Move to the right before the traffic lights, and turn right onto Mosquito Way. At the next roundabout take the 1st exit leading into the Hertfordshire University Campus car parks.

From St Albans on the A1057 : At the traffic lights to the South of the Hertfordshire University Campus, turn left onto Mosquito Way, then take the 1st exit at the roundabout.

Post Run Coffee

Every week we grab a post parkrun coffee in the Herts Sports Village café, just inside THE main entrance - please come and join us!