100 ultramarathons in 100 days: former rugby pro hit by brain injury nears end of feat
David ‘Jacko’ Jackson has aimed to raise awareness of brain injuries, with fellow runners sharing their stories

TL;DR
- David 'Jacko' Jackson is attempting to run 100 ultramarathons (50km each) over 100 consecutive days.
- The challenge aims to raise money and awareness for brain injury charities Headway and Head for Change.
- Jackson, a former professional rugby player, suffered a traumatic brain injury which ended his career.
- Over 700 people have joined him on parts of his run, sharing their experiences and stories.
- He sustained a leg injury early in the challenge but, with support from his wife, continued by adjusting the daily distance.
- The journey has involved living in a camper van and experiencing significant support from well-wishers.