Please do not attend parkrun if you display any COVID-19 symptoms.

The Course

The course is 5000m (5K) long. This has been accurately measured by us with a professional measuring wheel. The course is at Harrow Recreation Ground, Harrow. The course is run on a mixture of tarmac paths and grass. 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 Harrow 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 Harrow 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 is a 3 lap run which follows the perimeter of the park (anticlockwise) with an additional small ‘inner’ loop only on lap 1 after 600m.
Each lap contains two gradual ascents which are not too demanding. The lap has picturesque views over towards Harrow on the Hill and St Marys church spire. The run is entirely on tarmac, apart from a short finish on grass.
The start is alongside the Harrow St Marys pavilion close to the entrance nearest the town centre and the finish is within 100m of the pavilion on lap 3.


Toilets are available in the Harrow St Marys pavilion at the start and a public toilet on the course near to the Hindes Road entrance.
A childrens playground is adjacent to the car park just 400m after the start. There is an outdoor exercise station at the north end of the park by the Cunningham Park entrance.
There is free car parking in Beresford Road area in addition to the main free car park next to the childrens playground.
The Morrisons supermarket on the Pinner Road (just 5 minutes from the start) also has parking (restricted to 2 hours max stay) and a pleasant café on the ground level.

Getting There

Location of start

The run starts alongside the Harrow St Marys pavilion close to the entrance nearest the town centre.

Getting there by public transport

Harrow on the Hill tube station and Harrow Bus Terminal are a short 5 to 10 minute walk from the starting point.
Bus services 183 and H18 stop on the Pinner Road where there is a park entrance close to the Morrisons supermarket.
Bus service H14 stops on Headstone Road allowing entrance to the park via Hindes Road.

Getting there on foot

Exit left from the Bus and Tube station, walk along College Road and turn right into Headstone Road. Turn left immediately into Junction Road and walk via the pedestrian walkway underneath the roundabout turning right Roxborough Road and into the park via entrance to your left.

Getting there by road

The park is situated close to Harrow town centre and has multiple access points.

From the North: travel up Harrow View towards the town centre and turn right into Buckingham Road, then left into Salisbury Road crossing the intersection with Hindes Road into Roxborough Road and right into the car park (approx. 40 spaces).

From the West: travel up Pinner Road and turn left into Pinner View. Take the third right into Chandos Road and park at the end where there is an entrance into the park via Beresford Road.

From the South: travel through Harrow town centre and follow road signs to Pinner via Pinner Road. Take the fifth right into Chandos Road and park at the end where there is an entrance into the park via Beresford Road.

From the East: travel through Harrow town centre via Greenhill Way and turn right at traffic lights with Headstone Road. Take second left into Balfour Road and crossing the intersection with Hindes Road into Roxborough Road and right into the car park.

The car park Sat Nav Post code is HA1 1RR

Post Run Coffee

Every week we grab a post parkrun coffee in Harrow St Marys pavilion (adjacent to the start area) - please come and join us!