IT IS the event that everybody does for somebody else.
Whether it is in memory of a brother, because your best friend didn't want to do it on her own – or because your uncle promised you an extra £50 sponsorship if you cross the finish line in under an hour – everyone has a reason and a goal.
This year's Jane Tomlinson Hull 10K has sold out, meaning more than 3,500 people will be taking to the city centre streets on Sunday.
Among them will be the relatives and friends of Kerry Key.
The mother-of-two was a tireless fundraiser and bravely fought cancer for seven years.
She died at her home in February, aged just 36.
"The run will be very emotional," said her stepmum Dawn Megson, 44, of Roos.
"We all miss her dearly – she was a lovely young lady with a huge personality.
"We're not all runners but we will have a lot of support on Sunday and lots of people are going to cheer us on."
Dawn is part of a team who are running for the newly-formed Kerry Key Foundation.
The organisation has been set up to raise money for Kerry's favourite charities – Jane Tomlinson For All Events, St Anne's Community Special School, Cancer Research UK and Her Breast Friends.
"We'll all be running in our petrol blue Kerry Key Foundation T-shirts," said Dawn.
"Kerry ran the Hull 10K last year and she was a great supporter of the Jane Tomlinson events.
"The foundation was formed to help carry on the fundraising Kerry did when she was alive."
Kerry was the mother of Lewis, who has severe learning disabilities, and Georgia.
It is hoped Georgia will be one of the people cheering from the crowd on Sunday.
Dawn said: "The foundation is open to anyone wanting to do some fundraising in her memory and for the four charities.
"But you don't have to be a runner to do it – you can hold a coffee morning or a dance or another type of challenge.
"We'd love to hear from people who want to help."
The Kerry Key Foundation team will be lining up in Alfred Gelder Street with more than 3,500 other people on Sunday morning.
This year's event has been hailed a massive success, as it has completely sold out.
Event lead Emma Griffiths said: "We've always had amazing support from the people of Hull and this year is no different – we're thrilled that we've sold out.
"We're looking forward to another really great day and I'm looking forward to seeing everyone at the start line."
This year's event is the fourth to be organised by Jane Tomlinson's Run For All.
Proceeds from the event will go to the Jane Tomlinson Appeal – the legacy of the fundraiser and campaigner of the same name who raised £1.85m for children's and cancer charities before she passed away from cancer in 2007 aged 43.
Her family, through the For All Events organisation, are now on track to take that total to £5m.
Lord Mayor of Hull and Admiral of the Humber Councillor Danny Brown will be handing prizes out at the finish line.
He said: "The Hull 10K is such a popular and inspirational sporting event.
"The runners and spectators who cheer on those taking part create an electric atmosphere in the city while helping to raise money for charity.
"I'm really looking forward to the event."
Entrants to the Hull 10K can run for a personal challenge, for fun or for charity.
They can select any good cause, but are especially encouraged to raise funds for one of the event's official partner charities – Dove House Hospice, Her Breast Friends, Echoes Foundation, CLIC Sargent, Martin House Children's Hospice, Macmillan Cancer Support, Candlelighters, Yorkshire Cancer Research, Hull Children's University and the Jane Tomlinson Appeal.
Eve Clark, commercial, fundraising and business manager at Hull Children's University – which is also the Mail's charity of the year – said: "Once again we are happy to be part of the Hull 10K. It's great to be involved in such a fun and motivational event that brings the whole city together, and to raise money at the same time is a great added bonus."
Road closuresROAD closures will begin from 4am on Sunday, May 19, and will affect roads around the 10K course.
Roads will reopen on a rolling timetable as soon as it is safe to do so.
City centre roads affected by the closures include: Queens Dock Avenue; Quay Street; Hanover Square; Parliament Street; Wilberforce Drive; Lowgate; Alfred Gelder Street; Manor Street.
A number of other city centre roads will also be affected and diversions will be in place.
The Hull 10K route takes competitors from Alfred Gelder Street to Citadel Way, along South Bridge Road, towards The Deep, past the Marina and Princes Quay, towards High Street, Whitefriargate, Jameson Street, Jarratt Street, Queens Gardens and back to the Guildhall in Alfred Gelder Street.
Hull 10K event lead Emma Griffiths said: "We're looking forward to another successful Hull 10K. We work really hard to minimise any disruption, but with an event on such a large scale, a small amount is inevitable."
Runners advised: set off earlyPARTICIPANTS are advised to assemble for the mass warm-up in the start area in Queen's Gardens at 8.45am.
At 8.55am there will be introductions and speeches and participants will start to assemble in Alfred Gelder Street.
At 9am the race will start, with more than 3,500 fundraisers setting off on their route.
The first runners are expected back at about 9.30am. Those taking part should note that traffic and car parking will be problematic on Sunday morning.
They are therefore advised to set off early.
Visit www.runforall.com for more information.
• This year's event is sponsored by the Asda Foundation, Hull City Council, Mail News and Media, BBC Humberside, MKM Building Supplies and KC.
Anyone wishing to find out more about the Kerry Key Foundation can call Dawn on 07749 446529, Louise King on 07734 363970 or Laura Davies on 07794 429297.