Keswick Mountain Festival has unveiled the details of its 2015 programme.
Olympic, European and Commonwealth triathlon champion Alistair Brownlee is set to be a guest speaker at the event.
The festival will run from May 14 to 17 in the Lake District, and will offer a mixture of outdoor activities, speakers, sports events, and live music.
Thousands of people will be descending on Keswick over the next four days for the town's Mountain Festival. They're coming to see famous speakers, live bands and to watch or take part in mountain sports.
This year, due to popular demand, there are more triathlon events than ever before. The sport is fast becoming one of the most popular in the Lakes.
Fiona Marley Paterson went to meet one family who love getting involved:
Keswick Mountain Festival begins today. It's four days of camping, live music, speakers and sport.
This year will see more events than ever before, including a triathlon - the fastest growing sport in the UK. This year's event will also see the first children's triathlon in the event's history.
Kendal's Mountain Festival has been given a National Tourism Award. It was one of five Cumbrian winners chosen by VisitEngland.
The festival runs in November and includes films, art and adventure sports. It claims to be the largest of its type in the world and is considering introducing a summer event.
A concert in a tepee on the banks of Derwent Water is just one of the highlights of this year's Keswick Mountain Festival.
Dutch fiddler Tim Kliphuis will be combining his love of fell running and playing the violin to raise money for local mountain rescue teams.
As Samantha Parker reports - there is something at the festival for everyone.
Watch her full report below.
The Keswick Mountain Festival director Lucy Scrase believes that this year's event is going to be bigger and better than ever:
One of the largest mountain festivals in the UK is being launched in Cumbria.
The Keswick Mountain Festival, now in its seventh year, aims to showcase the stunning landscapes of the Lakeland fells with a variety of activities and challenges held over five days.
Around 20,000 people from across the UK and overseas attend the festival every year to enjoy the outdoors.
A range of activities including kayaking, hiking and orienteering are held for all ages and abilities.
A festival village is held at Crow Park in Derwentwater over the weekend of the event and is packed with displays, demonstrations and over 60 exhibitors.
The festival kicks off today (15th May) and runs until Sunday (19th May).