John ‘Stingray’ Ray Onifa will tackle the Barclays MoonTrekker on Friday, but he said it was “much more difficult” to talk about navigating Hong Kong’s hills and valleys than actually doing it. And that’s despite the Philippine star, who is considered one of the best trail runners in Asia, carrying a long-term back injury that still leaves him “feeling the pain”. Onifa also has a perfect record to defend, having won the 50-kilometre race on his debut in 2018 and the 40km version five years...