An Edinburgh man is to run 260 miles in nine days between two stone circles in Lewis and West Lothian.
Ian Campbell is captain of the Hunters Bog Trotters
Ian Campbell, 41 , captain of the Hunters Bog Trotters, is to start the run on Saturday from Callinais stone circle to Cairnpapple near Bathgate.
The athlete, who is running for Leukaemia Research, will first complete the Stornoway Half marathon beforehand.
He said: "Running between my two favourite stone circles has always been an ambition of mine."
Leukaemia Research was established in 1960 and is still the only national research charity devoted exclusively to leukaemia and the related blood disorders in both children and adults.
Donations will support doctors and scientists at hospitals and academic institutions throughout the country and a wide range of projects, from basic laboratory research to clinical trials with patients.