Kate McCann has said she believes her daughter's kidnapper did not take her "a million miles" from the Algarve.
Madeleine McCann was three-years-old when she disappeared from the family's holiday apartment in Praia da Luz in Portugal in May 2007 while her parents ate at a nearby restaurant.
Mrs McCann, from Rothley in Leicestershire, said that, nearly nine years on, she and her husband Gerry would "never give up" hope of finding their daughter.
The 47-year-old, who is an ambassador for the charity Missing People, said her research into similar cases has led her to believe abducted children are not usually taken far from the scene.
She told the Sun: "That's where she last was and I don't think she's been taken a million miles from there. I've always said Praia da Luz is the place where I feel closest to her."
"The urge to look for Madeleine absolutely hasn't changed at all. You hear all the time about people who have been missing for years being found. There have been so many cases like that.
"We will never give up. You couldn't settle if you thought about giving up. I want an end, an answer. Whatever that it is."
Mrs McCann added Child Rescue Alerts, early warning messages she helped to launch, could have "mobilised" people at the time of Madeleine's disappearance.
Since 2011, the Met have been assisting in the search for clues as to what happened to the youngster with officers visiting the holiday resort in 2014.
The British investigation into Madeleine's disappearance has since been scaled down from 29 officers to four. Scotland Yard have insisted the probe will still continue, but with a smaller team.
The Madeleine McCann case
The Madeleine McCann case
1/25 Madeleine McCann
One of the last photos of Madeleine before her disappearance
2/25 Madeleine McCann
Madeleine McCann was three when she was abducted during a family holiday in 2007
3/25 Top worn by a man that detectives investigate with connection to disappearance of Madeleine McCann
A computer generated image of the distinctive burgundy long sleeve top worn by a man that detectives investigating the disappearance of Madeleine McCann are looking for
4/25 Apartment in Portugal from where Madeleine went missing
An aerial view of the Ocean Club apartments and pool where Madeleine McCann went missing
Jeff J Mitchell/Getty Images
5/25 Kate McCann
Kate McCann speaks to the press outside the court house in Lisbon on 12 September 2013 following the first audience of the McCann couple's libel proceedings against former inspector Goncalo Amaral for a book written about the case of their missing daughter
6/25 Kate and Gerry McCann
Kate McCann and Gerry McCann before the start of the 'Miles for Missing People' charity run in Regent's Park in London, 2011
7/25 Kate and Gerry McCann
Kate and Gerry McCann make an appeal at a press conference in the holiday resort of Praia da Luz, Portugal 7 May 2007
8/25 Kate and Gerry McCann
The McCann's give an interview with a Spanish television channel at their home in Rothley
9/25 Kate and Gerry McCann
Madeleine McCann was abducted in Portugal in May 2007
10/25 Kate and Gerry McCann
Preliminary forensic analysis on samples recovered from the McCanns' hire car raised the possibility of a match with Madeleine's DNA profile, according to the leaked report
11/25 Kate and Gerry McCann
Pope Benedict XVI blesses a photo of four-year-old abducted British girl Madeleine McCann, while meeting her parents Gerry and Kate McCann, after his weekly general audience at the Vatican, 2007
12/25 Kate and Gerry McCann
Gerald McCann and Kate McCann speak to the press on 4 May 2007 at the Ocean club appartement hotel in Praia de Luz in Lagos after Madeline vanished while her parents were out to dinner
13/25 Portuguese police search for Madeleine
Dozens of Portuguese police aided by dogs search for missing three-year old British girl Madelaine McCann in front of the Ocean club appartment hotel in Praia de Luz in Lagos
14/25 Kate and Gerry McCann
Gerald McCann and Kate McCann walk holding their two other children outside the Ocean club apartment hotel in Praia de Luz in May 2007
15/25 Madeleine McCann
Madeleine McCann pictured at the age of three, left, and as she might have looked aged nine
16/25 Kate and Gerry McCann
The parents of missing Madeleine McCann have described as "pure speculation" reports in the Portuguese press suggesting that a chief suspect in the disappearance of their daughter was killed in a tractor accident four years ago.
17/25 Tribute for missing Madeleine in Rothley, Leicesteshire
Three year old Cally prepares to add a yellow ribbon to a floral tribute for missing Madeleine McCann in Rothley in Leicesteshire, 2007
18/25 Support for the missing Madeleine
Everton captain Lee Carsley (L) leads his team onto the field, followed Mikel Arteta (C) and Manuel Fernandes (R) wearing Tshirts bearing a message of support for the missing British toddler Madeleine McCann, prior to the English Premiership match between Chelsea and Everton, at Stamford Bridge in London, 2007
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A poster appealing for information about Madeleine McCann at a Spanish railway station
20/25 BBC's Crimewatch reconstruction of Madeleine McCann's disappearance
Former porn star Mark Sloan (L) was cast in the BBC's Crimewatch reconstruction of Madeleine McCann's disappearance
21/25 Clarence Mitchell holds two artist's impression of the new suspect
McCann family spokesman Clarence Mitchell holds two artist's impression of the new suspect on 20 January 2008 in London. The description has come from British woman Gail Cooper, who was staying with her family close to the McCann's apartment in Portugal
22/25 Image of a woman sought in the case
Clarence Mitchell, the press spokesman for the McCann family, releases a photofit image of a woman sought in the search for missing Madeleine McCann
23/25 Suspect in disappearance of Madeleine McCann
Police released two e-fits of suspect in disappearance of Madeleine McCann
24/25 Raymond Hewlett
Convicted paedophile Raymond Hewlett, who is being sought in connection with the disappearance of Madeleine McCann
25/25 A picture of a suspect
An artist's impression of a suspicious man seen by a witness apparently watching the McCann family's apartment in Praia da Luz, Portugal, the day before Madeleine McCann went missing
The couple had previously praised the "meticulous and painstaking work" of detectives, and have again offered thanks to the police.
Costs of the ensuing investigations have reached £10 million and after a Home Office review of the case started four years ago. A further £2 million is budgeted for the year ahead.
In a heart-felt Christmas message last year Mr and Mrs McCann said: "It is our ninth Christmas without Madeleine. As always, she is very much on our mind and in our hearts and Christmas preparations.
"We have not lost hope that we may get to celebrate another Christmas with her.
"If anything can drive us on, that most definitely will."
Additional reporting by Press Association
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