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Former Rugby Pro Nears 100-Ultramarathon Brain Injury Awareness Feat

Theo Brennan By Theo Brennan calendar_today Aug 31, 2026 schedule 2 min read

David 'Jacko' Jackson, a former professional rugby player, is nearing the completion of an extraordinary challenge to run 100 ultramarathons in 100 consecutive days, raising significant awareness and funds for brain injury charities.

Jackson, whose rugby career ended prematurely due to a traumatic brain injury, began his endurance feat in May from his north Wales home and aims to conclude it on September 5 at Caernarfon Castle nearing the end of an extraordinary bid.

A Journey Fueled by Purpose and Pace

Each ultramarathon covers 50 kilometers (approximately 30 miles), emphasizing consistent, steady effort over speed. Jackson noted his strategy is not about running fast, but rather taking each stage gently to ensure he can continue the next day take each stage nice and gently. This measured approach has allowed him to endure the extensive mileage, despite suffering a leg injury on day 14 in the Lake District, which he pushed through suffered a leg injury on day 14.

His journey has spanned Scotland and England, attracting over 700 individuals, ranging from children to octogenarians, who have joined him for portions of the runs. Jackson reported using seven pairs of running shoes throughout the endeavor used seven pairs of shoes.

Amplifying Awareness Through Shared Experiences

Jackson’s primary motivation extends beyond fundraising for Headway and Head for Change, two brain injury charities. He aims to draw attention to the wider issue of brain injuries and provide a platform for people to share their personal experiences.

He recounts that many individuals running alongside him have opened up about their struggles or triumphs, finding a unique camaraderie on the road. The shared physical challenge often facilitates "deep stuff" discussions, offering participants a space to talk about difficult experiences or celebrate overcoming adversity people tend to share a lot.

Rugby's Ongoing Concussion Dialogue

Jackson’s own rugby career concluded abruptly in 2013 following a traumatic brain injury and subsequent seizure during a training session traumatic brain injury and seizure on the pitch. For months post-injury, he experienced debilitating symptoms including fatigue and light sensitivity.

His experience highlights the ongoing challenges faced by athletes in contact sports and underscores the importance of continued research and support for those affected by brain injury. The rugby world has increasingly grappled with the long-term effects of head trauma, leading to significant discussions and legal actions by brain injury concerning player welfare and safety protocols by brain injury.

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