Parkrun

When: every Saturday at 9am
Where: Central Park Chelmsford (also takes place nearby in Billericay, Braintree, Maldon & Colchester)
Distance: 5K
Cost: free
How to enter: just turn up, but if you want a time then download a barcode from the Parkrun website.

Brightlingsea Challenge

When: Sunday 19th March 9.30am
Where: Batemans Tower, Promenade Way, Brightlingsea, Colchester CO7 0HH
Distance: 26.2 miles or as much as you can do in 6 hours
Cost: £40
How to enter: sign up here

Brentwood 10K race for life

When: Saturday 20th May 10.00am
Where: Weald Country Park, South Weald, Brentwood, CM14 5QL
Distance: 10K
Cost: Adults £17.49, children £11
How to enter: sign up here