Jewish Lads' and Girls' Brigade volunteer leader Alex Lewis has been walking the 60 miles from JLGB's South Woodford HQ to its summer camp in Colchester to raise money for the organisation which "changed my life".
Alex, 19, from Chigwell, is partially sighted and had learning and behavioural difficulties. He says he has made hundreds of friends at JLGB, which has presented him with a medal for overcoming his problems.
On the first day of the walk on Tuesday, Alex - who is being accompanied by JLGB volunteers - said the route "is down long country lanes with lots of cars so we have to be careful. We're camping most nights and staying with a JLGB family too."
Volunteers also helped him prepare his route and took him shopping for waterproof clothing and food supplies. He has so far raised £2,600.