Presenter Alex Jones has completed her rockface challenge for Sport Relief - a three day ordeal which has left her fighting tears while inching up a sheer cliff.

The One Show host has hauled herself 1200ft up the Moonlight Buttress in Zion National Park, Utah.

Having survived two tough days and nights on the rock, the star was emotional and relieved when she finally arrived at the summit.

Speaking at the summit, Jones said: "I can't believe I'm at the top, it's such a feeling of elation. I just wanted to touch solid ground for so long. Everything aches. The bottom of my back, my hands are in pieces."

Jones has been seen struggling with her emotions during her uphill battle, which has already raised more than £300,000 for the charity.

She had just three months of training for the tough task, which would challenge many experienced climbers, and has had to sleep harnessed to a portable suspended ledge, although she has found it difficult to rest with so little room.

Jones has climbed a height greater than London's Shard building, and she has been enjoying the views from her commanding position, observing: "The upside of this challenge is that there's probably no better place to have a cup of tea in the morning."

Her climb will feature in a documentary to be screened on BBC1 at 3.15pm on Sunday.

The money she raises will be spent to help families affected by Typhoon Haiyan in the Philippines, as well as other projects.