David ‘Jacko’ Jackson has aimed to raise awareness of brain injuries, with fellow runners sharing their stories The key for David “Jacko” Jackson is to take each stage nice and gently. “It’s not about running fast,” he said. “It’s more like the hare and tortoise story. Slow and steady – and do it again tomorrow.” So far, so good. Jackson, a former professional rugby player who retired after a traumatic brain injury, is nearing the end of an extraordinary bid to run 100 ultramarathons (50km, or about 30 miles) in 100 consecutive days. Continue reading...