Paralympian doing year-long running challenge completes original London marathon

Paralympian Richard Whitehead has completed the original marathon route started at the 1908 London Olympics as part of his year-long running challenge (David Baird/PA) - (David Baird)

Double gold Paralympic athlete Richard Whitehead has completed the original London marathon route to support grassroots running during a year-long challenge.

The Paralympian, who runs with prosthetic legs, is aiming to complete 20 marathons across the world in 2025 to reach his goal of finishing 100 marathons in 21 years.