Lee McConnell is looking forward to the sofas in Beijing. The washing machines will be welcome, too. She has seen photographs and, as athletes’ villages go, China’s comes close to luxury.

“It might sound like a strange thing to be excited about, but sometimes there are just hard seats at the athletes’ village and I can’t sit on them for long because my back gets stiff,” the 400m runner explains.

“And the last thing you want to be doing when you’re competing is having to trek down to the launderette.”

It will certainly be an improvement on her training facilities at home. Just two weeks before the start of the Olympics, she is standing on the uneven concrete slabs of the pavilion at her modest training track, where the grass is overgrown and the gates are secured at night with rusting padlocks. Athletes train here in Coatbridge, Lanarkshire, beneath the gaze of a coarse housing estate. When she finishes her session in these modest surroundings, McConnell, currently Scotland’s most high-profile and successful athlete, slips straight into her car, still wearing her training gear, and heads home to wash and change.

Life for McConnell is a succession of contradictions. With her short, blonde hair, pretty face and bright nature, she is the glamour girl of Scottish athletics, with an agent in London who manages her time and sponsorship deals. She was one of the figureheads of Glasgow’s bid for the 2014 Commonwealth Games, memorably whirling delegates round the dancefloor at a series of ceilidhs ahead of the final, and successful, vote in Colombo, Sri Lanka, last November.

There is a beguiling mixture of hard-headed ambition and self-effacement to McConnell, who wears her achievements as lightly as a favourite blouse. Sometimes, during her conversation, she will gaze self-conciously at the ground after making a point. Yet she also breaks into the occasional giggle, displaying a carefree jauntiness.

At 29, her days are defined by the sacrifices she makes. “My training sessions determine my social life,” she shrugs. “I do go out with my friends and see my family, for dinner or to the cinema or to catch up over coffees. It’s kind of normal, and the only social side I don’t have is going out clubbing. I don’t do that in the summer months and only occasionally in the winter. It doesn’t bother me that much.”

On returning from Sri Lanka, she allowed herself to have Christmas Day and New Year’s Day off, but the rest of the winter was spent in training, cramming 10 sessions into every week. Her boyfriend, Graeme Lammie, is a former 4x400m hurdler, so he understands the way their days, and also their long-term plans, must bend round the requirements of her sport.

McConnell has become aware of friends of a similar age starting families, but athletics remains the dominant presence in her life, so it assumes a similar role for Lammie.

“I don’t think I’ll ever become broody until I finish what I’m doing,” McConnell says. “It just doesn’t bother me right now. I don’t know if it’s because I’m so focused on what I’m doing that it just doesn’t enter my mind at the moment. Yes, I’d like to have children at some point, the majority of females do, but it’s not something I’d consider until I’ve finished my athletics.”

A coach saw potential in McConnell during a summer athletics camp put on by Glasgow city council and asked her mum, Linda, if she could join a local club. Now her family share in the triumphs, and all are following her to Beijing. Her grand-father, William, keeps every medal she has won at his Glasgow home. It is a steadily growing collection. Beijing will be McConnell’s eighth major championship in a row and she has medals from the world student games, European indoor and outdoor championships, world championships and Commonwealth Games. To complete a full collection, all she needs is an Olympic medal. “I’ve no idea how many he has,” she says of her grandfather’s hoard. “I can’t remember. I’m really happy, obviously, when I get the medals, but I tend to move on quite quickly to focus on the next one.”

Her figure-hugging training gear emphasises the pared outline of a body honed by the demands of her event, but the exertion takes its toll. To compete in the 4x400m relay at the world championships in Osaka last year, McConnell had to endure 10 painkilling injections and a course of acupuncture. She came home with a bronze medal.