Olivia Tsim – Welsh International endurance athlete, Chartered Accountant, running Coach & Mum.

We are delighted to welcome Olivia to this year’s Cardiff Running Show. A Welsh International with a background in sprinting, she spent 12 years on the track before moving into distance running — achieving her best performances while also balancing the demands of motherhood.

Her current personal bests are 16:12 for 5km, 33:48 for 10km, 73:37 for the half marathon, and 2:35 in her debut marathon. This has established her as one of Wales’s leading endurance athletes.

At the Cardiff Running Show 2025, Olivia will take part in an interactive Q&A session, sharing her journey from sprinting to endurance running,  and the lessons she’s learned competing at a high level. She will discuss the realities of balancing training and competing with motherhood and everyday life.
Visitors will have the opportunity to ask questions and hear her story first-hand. They can also explore her insights on resilience, motivation, and achieving personal goals in sport and life

Links
Instagram: @ojt_runs

See other exhibitors:
Exhibitors & Speakers 2025