Almost 1,000 people took to the streets of Calderdale in a sea of pink to take on the Overgate Hospice Midnight Walk.
Charity organisers say it is the biggest Midnight Walk they have ever seen.
The 984 walkers had the choice of tackling on a six or 13 mile route - both of which were kept a secret until the night.
The 13-mile route went as far as Luddenden Foot before snaking back towards the starting point at North Bridge Leisure Centre in Halifax.
Walkers were welcomed to North Bridge from 10pm and the Sports Hall quickly filled with men, women, and children; young and old, many of whom also accompanied by their dogs.
One walker, Steve Lewis, took on the 13-mile route and went on the take on the Great North Run the following morning.
Steve said; ‘It was such a great atmosphere on the night I am glad not to have missed it, despite the need to be awake in just a few short hours time to take on the Great North Run.
“Overgate Hospice is such a great cause and I am keen to support them however I can.”
The crowds were offered glow-in-the-dark face paints, flashing goodies such as shoe laces, bunny ears and even dog collars.
Many also added the name of who they were walking for to the 5ft memory star.
The walkers set at midnight and by 6.30am, all had arrived safely back at North Bridge where they received their medal and enjoyed a bacon buttie and hot chocolate.
Massages were also available from The Wellness Centre.
Rebecca Gill, events fundraiser at Overgate said: “It was fantastic to see so many people come together to support Overgate, and they really were a stunning sight as they set off into the night in their bright pink t-shirts and flashing headbands.
“I would like to thank each and every person who took part, and would like to extend a special thank you to the team at Overgate, our sponsors Rosemount Estates and our fantastic volunteers, without whom this amazing annual event simply would not be able to happen.”
More than 100 volunteers gave their time to support what is the Hospice’s biggest event of the year, which is estimated to raise £50,000 for the Elland-based charity.