It is hoped the trip, for which Mr Tusting has planned to cycle 40,000 km (24,855 miles), will raise £10,000 by the time he finishes – at the end of 2026.
He said his epic cycle had taken him along the world’s second highest road, the Pamir Highway – which reaches 4,600 metres (15,092 ft) high – across the Pamir mountains through Tajikistan and Kyrgyzstan, where the “air was pretty thin”.
The bike industry worker, who has been camping in some of the world’s remotest spots, said he had been inspired by his grandfather to try to make a difference to the community.
Mr Tusting hoped his endeavours would allow youngsters to stay at the Chellington Centre to enjoy its outdoor pursuits, when their circumstances would normally make it difficult.