Pavey will step up to half-marathon in the Great North Run, which takes place on 1 October.
Runners and spectators could face delays when travelling by train to Newcastle for the Bupa Great North Run.
BBC: Rail maintenance work to affect Great North Run weekend
The Great North Run is the world's largest half-marathon event, with 50, 000 entries.
The Great North Run is the world's most popular half-marathon road-running event, with more than 47, 000 competitors of all abilities.
Radcliffe, 33, returned to action last Sunday at the Great North Run following injury and the birth of her daughter.
She will then compete in the BUPA Great North Run on 6 October and the Great Ireland Run a week later.
She hoped to run the Great North Run before becoming pregnant, but she has now passed that job to her boyfriend.
Mo Farah will be among five London 2012 gold medallists to perform the role of starter at the Bupa Great North Run.
Coverage of the Great North Run will feature on BBC One from 0935 BST on Sunday, with highlights at 1655 on BBC Two.
She said the Great North Run fundraising project with Jonathan Davies and his wife had been one of the biggest individual efforts backing their campaign.
Portugal's Jessica Augusto was a distant second in 53min 15secs, while Great North Run runner-up Magdalane Mukunzi of Kenya was five secs further back in third place.
She completed three London Marathons, several triathlons, The Great North Run and, together with her brother, cycled from John O'Groats to Land's End and from Rome to Leeds.
Pavey will be contesting her third major event this month following the Great North Run and last weekend's Nike Run London 10km, where she won the women's race.
"I've now got a fast 10 miles time and I'll be aiming to run under 70 minutes for a half marathon in the Great North Run, " said O'Sullivan.
Gebremariam was second in the 2004 World Cross Country Championships behind Bekele, while Berhanu ran the fastest half marathon ever on British soil to win last September's BUPA Great North Run.
The Ruby Lambert Trust has been created to help raise the money needed to continue treatment at the Children's Hospital of Philadelphia - and a friend made at Summer Sundae will be adding to the fund by taking on the Great North Run.
Sunderland has previously played host to the Bupa Great Women's Run and the Bupa Great North 10k until it was moved to Gateshead in 2011.
Few were allowed to hear the words of their Great Leader during the summit: the North's state-run television showed only carefully-edited recordings.
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