An 81-year-old who has had two heart attacks and triple bypass surgery is set to take part in an annual fun run tomorrow alongside some of her children and grandchildren.

Grace Neighbour of Four Acres in Stevenage will walk the 5km Knebworth Park race in aid of the British Heart Foundation – but aims to run over the finish line.

This will be the eighth time she has taken part in the event, and estimates she has raised more than £2,000.

She said: “I know what I have raised doesn’t even begin to cover the cost of my operation, but as Tesco says, every little helps.”

Grace had her first heart attack in 2001 when she was 68, followed by a second when in 2005.

Doctors said her heart was in such a bad way that only triple bypass surgery would save her life.

Before her first heart attack Grace had taken part in a 5km at Fairlands Valley Park in Stevenage, so she was no stranger to charity runs when she first lined up at Knebworth Park.

This year two of her children – daughter Marie, 41, and son Colin, 47 – with grandchildren Holly, nine, and Bradley 11 – will be joining her. Marie has taken part in the event for the last four years with her mum.

BHF regional event organiser Hayley Reynolds said: “We’re very excited about this year’s run and hope to see many enthusiastic people eager and willing to take on the challenge.”

Entry is £12 for adults and £6 for children. To enter call 0845 130 8663, visit bhf.org.uk or email events@bhf.org.uk.

The Baldock Beast will also be taking place tomorrow.

The scenic race starts at 10am on Clothall Common and takes in the villages of Wallington and Sandon before looping back towards the outskirts of Baldock.

Entry is £19 or £17 for affiliated club members.

Race packs will not be posted out but can be collected from Templars Carvery and Hotel on Saturday between 9.30am and 2.30pm and Sunday from 8am and 9.15am. For more visit www.baldocktown.co.uk.