A 71-year-old grandmother is hoping to secure a place in the Guinness Book of World Records by becoming the oldest woman to complete an "ultra marathon".
Jennifer Murray will take part in the 'Racing the Planet - Nepal' event, a six-stage, 250km (155 mile), trek through the Annapurna foothills, which reach up to 10,500 feet.
Writing for The Huffington Post UK, Murray says one of her aims is to inspire others to "live their dreams" and show that life doesn't end at 70.
"The race attracts world class ultra runners along with those who just hope to finish. I fall firmly into the latter category. It's all about a very personal challenge. We take off at 8am each morning and I am unlikely to reach the next camp in daylight," she writes.
Two hundred competitors from more than 35 countries will take part in the race that starts on November 20. They will contend with daytime temperature highs of 25-35 °C and night time lows of 0°C.
Murray is no stranger for extreme pursuits however, having already completed the first ever helicopter flight around the world by the south and North Pole.
She is raising money for The Friends of The Scott Polar Research Institute (SPRI).