Belvoir Tri members Mark Deans and Chris Pugh set out on an adventurous challenge , tackling mud, hills, water and grit on Saturday.
Sherwood Pines hosted the annual Robin Hood Duathlon set within the breathtaking 1,200 hectares of woodland and open heath.
The duathlon was a challenging off-road course, consisting of a 5km run, 20km bike and 3.4km run.
Mark completed the duathlon in an overall time of 2:01:44.
He said: “My first run leg was great and I felt really strong and had to contain my excitement and not go off to quickly and ruin my legs before the second run of the course.
“The bike course was fantastic in loop one and a nightmare in loop two after all the riders had been through it and left it a slippery mud fest.
“I was happy with my own skill on the bike given that I have only owned a mountain bike two weeks and was riding clipped in.”
Mark took an unfortunate tumble at the end of one descent that knocked the wind out of him, but he was soon on the bike again and willing the ride to the end.
His second run was good and left him feeling he could have pushed a little harder.
Chris (pictured) completed his event in 2:07:37, with splits of 24:58, 1:17:16 and run to the finish line in 22:30.
“The duathlon can only be described as a real tough day in the office in conditions that literally sucked the energy out of my muscles,” he said.
“But if you like mud it was fun. And I like mud.”