The charity hosts sports events to improve the health and wellbeing of veteran communities in Scotland.
Liane said: “Summer has been training every day and has really been pushing herself. I think she will do a mixture of walking and cycling to complete it. She is really motivated.
“David would be over the moon, it’s something that I know he would have been so happy about. He was so into his fitness and always very active, so the event was big to him.”
On top of training and juggling school commitments, Summer has also been helping her mum prepare for the birth of her little brother.