Poppy Jones is not one to be held back by her cerebral palsy.
The condition affects all of her limbs, causing her to arch backwards. She needs help with sitting and rolling.
Despite this condition, Poppy is determined to complete her first triathlon.
She is taking part with her dad, Rob. He will push and pull Poppy around the course using specially adapted equipment.
The chair that Poppy will sit in for the race is designed by the charity Cerebra's Innovation Centre and modelled in part on the same chairs used in Paralympic competition. It's made of aluminium and carbon fibre.
The front wheel can be removed to enable it to be attached to the back of a bike for the cycle section of the triathlon.
For the swim, Poppy will sit in a custom-built boat that Rob will tow as he swims.
ITV Wales caught up with Poppy and Rob as they prepared for the Cardiff triathlon this weekend.