Daredevil distance runners set a new record this weekend by reaching the tops of the 10 highest mountains in the UK.
Dr Andrew Murray and Donnie Campbell achieved the feat in 13 hours 10 minutes
A total of 9 hours 10 minutes was spent running, with the remainder driving between the mountain ranges.
The duo are no strangers to record breaking feats of endurance, however.
Aberdeen born GP Dr Murray, 34, completed a 2,559 mile run from Scotland to the Sahara Desert.
Mr Campbell, 29, a running coach and former Marine, has completed a non-stop run between Glasgow and his home in Skye.
Saturday’s run started on Ben Lawers at 4.20am before heading to the Nevis Range where the pair completed Aonach Mor, Aonach Beag, Carn Mor Dearg and the UK’s tallest mountain, Ben Nevis.
They then headed to the Cairngorms, where they traversed Cairn Gorm, Ben MacDui, Braeriach, Angel’s Peak before finishing on Cairntoul at 5.30pm.
Dr Murray said: “The mountains of the Scottish Highlands are magical.
“The Big 10 had it all in terms of spectacular ridgelines, some wildlife and highly variable weather.
“We had fog, wind, rain, and even a glimpse of sunshine.
“We were both glad that the promised thunderstorms did not materialize. For me definitely the toughest part of the day was dealing with the wind, rain and low visibility in the Cairngorms when we were already tired.
“There were a few boulder fields to cut across which were pretty slippy resulting in a few comedy falls.”
Mr Campbell added: “It was an early start, followed by a full day of up and down, up and down.
“We are hoping that other people will take on the Big 10, much like the three peaks challenge.
“With a decent level of fitness it could be great day and a do-able challenge, that people can give a shot.
“Saying that, low visibility and changeable weather makes finding the routes and navigation tricky so it’s important to have decent kit with you.
“Some fresh air and a load of hills might give us sore legs the next day, but it’s much underestimated how good exercise is for mental health as well as physical health.”