Marathon des Sables: Hong Kong psychologist takes autistic runners to desert ultra, 250km across the Sahara
- Doctor Rachel Poon says the runners lack the self awareness to monitor their own condition as they run 250km through the desert
- Adjusting to new environments is hard for the runners, and they will need help getting used to the sleep and packing arrangements

Looking after yourself as your run 250 kilometres across the Sahara Desert is one thing, but Dr Rachel Poon Mak Sui-man has the added responsibility of taking care of three other runners, all who have autism.
Lam Pok-yin, Leung Hok-hin and Wu Man-hang are experienced trail runners and have competed in the Oxfam Trail Walker with Poon. But the multi-day Marathon des Sables (MDS) presents a host of new challenges that could trigger their condition.
“They can take care of themselves at home,” Poon said. “But without a common language at the MDS, and they are very rigid in their routine, it will be challenging. Just simple things, like making their beds or packing their bags. Once they settle in they will be fine.”
The MDS takes thousands of runners across the Sahara over seven days. The longest day is 84km. Runners are required to carry their own kit, including food for the week and only have the chance to refill their water at the start and finish of each day.

“If they are tired from the heat, it will be hard,” Poon said. “One of them is not fully aware of his own exhaustion. During one Oxfam Trailwalker, I asked if he was tired and he said no. He noticed he was falling behind but he had trouble labelling it.”
Poon said she will have to be extra vigilant, particularly monitoring their hydration.