It was a Grand National finish, with Jess pipping me by a nose.
I then tried to regain some glory by racing Jess over one of her favourite events, the 100m hurdles.
But as you can see, I cheated slightly by having my own set of mini hurdles to even things out. And it worked. I managed a dead heat and Jess did say that my technique was good.
Jess drives a Jaguar XKR Coupe, which is a long way from her first car, a humble Suzuki Ignis.
She says: “I love driving and I like driving by myself because it gives me some me time and it’s a break from training, which has been pretty gruelling.”
She says one of her ambitions is to drive a high-performance sports car around Silverstone — but not until after the Olympics.
Jess admits she’s a terrible passenger. She says: “My boyfriend says I’m like Mrs Bucket from Keeping Up Appearances, always telling him what to do.”
Jess was also impressed by Jag’s XF Sportbrake Estate.
She thinks it will be perfect for lugging around all the gear a modern athlete needs for training.
My fun afternoon with Jess was part of her link-up with Jaguar’s Academy For Sport.
Jaguar have invested £350,000 in the academy which is helping to mentor and train a cross-section of Britain’s up-and-coming young stars from a wide range of different sports.
Jess says: “I think the academy is doing a really good job with young sports people.
“It’s good that the youngsters are given access to British sporting stars who are helping to inspire them to become our next generation of top sports people.”
Geoff Cousins, of the Jaguar Academy, added: “The aim of the academy is to develop the sports stars of the future.
“We are developing athletes for the 2016 Olympic Games now.
“It’s also good for Jaguar as it takes us away from the image of being ‘the old man’s car’ to a far cooler sporting brand.”