Wilshere-Dacre Junior Academy’s popular teacher Tessa Alexander completed the marathon with the cheers of well-wishers ringing in her ears, as she proved an inspiration to the pupils she teaches at the school on Fishponds Road in Hitchin.

She completed the gruelling course in 6:03:45 raising more than £900 for the NSPCC.

Brave Tessa said: “Running is great for your mental health and this was kind of my theme for taking part.

“I didn’t think I could do it on top of all the pressures life throws our way. However, I quietly got on with the training, not really daring to believe I could do this.

“It’s been truly a blessing.

“I also ran the marathon for all the children I have had the privilege of teaching and helping through their difficult times.

“And for my beautiful, funny, crazy daughters – the only obstacles in our paths are the ones we build ourselves.

“It takes some of us longer than others to get to that finish line – but we all get there in the end.

“It was a brilliant experience – and if I can do it anyone can!”

It’s not too late to sponsor the inspirational Tessa – visit www.justgiving.com/fundraising/Tessa-Alexander.