DAVID Weir admits to being a little bemused about his Weirwolf nickname, although three consecutive gold medals on the track have certainly been the stuff of nightmares for his rivals.

However, he admits to sleepless nights ahead of today's marathon, when he hopes the capital's streets will be paved with yet more gold.

Weir's performances will define these Games and there would be no better way to bring the curtain down on these storied weeks of summer than to see him win again. Success is such an integral part of Weir that he has got it written on his chest – a tattoo that means "winner" in Japanese.

But rivals such as Canadian Josh Cassidy, American Kurt Fearnley, the Swiss Heinz Frei and Japan's Masazumi Soejima have raced lightly in comparison and not had the emotional rollercoaster Weir has with six races and three medal ceremonies in a week.

"Physically I feel in good shape, I've done all the right preparations, I've put in the mileage that I need but it's hard to know just how much this week has taken out of me," said Weir, a six-time winner of the London Marathon and triumphant in the 800m, 1500m and 5000m at these Paralympic Games.

"I really won't know how I feel until I start to race, how much the mental side of things and emotions have taken things out of me. I've long dreamed about winning the race, and being successful in one of the very last events of the entire London 2012 schedule would be very special.

"My rivals are going to be even more determined to beat me though and they've not been through what I have in recent days."

Weir's success is all the more impressive when you consider it comes in one of the most competitive classifications of the entire Games. His tactics in every race have been spot-on and team-mates say he is unbeatable on the track but two laps or 12 laps are very different to 26.2 miles around London's landmarks.

However, Weir appears to be in the zone, like Kelly Holmes in Athens, Chris Hoy in Beijing and Mo Farah in London. He has the air of invincibility that sucks the spirit and fight from his rivals.

"I've known Dave since he was seven and he really deserves all this," said Tanni Grey-Thompson, Britain's previously best-known wheelchair racer. "Beijing was really tough for him. He held the team aloft and had all the pressure on him.

"Here he's enjoying his racing. He's coming off the track, he's smiling and it's almost like he can do nothing wrong. It's that confidence he's got not to panic, which is amazing. He's on fire at the moment, but the marathon won't be easy – it's quite a technical course."

While Weir starts the marathon on a high, in the women's race, Shelly Woods is looking for redemption after a disappointing time on the track.

Woods was tipped as one of Britain's best medal hopes at the Games but a sixth-place finish in the 1500m, in which she holds the world record, is her best return from three events so far.

"I'm really looking forward to getting out there on the road, as much as it has been nice to race at the stadium," said the 26-year old, who won her first London Marathon this year. "It going to be very competitive, all these girls have speed and form and I can only give it my best shot.

"It's been a disappointing Games for me so far. It's not been easy. Racing here has been pretty overwhelming but I know I'm as a good as all these girls.

"I'd love to get on that podium, it would mean the world to me. I've given my all in everything but the standards here are higher than ever before."

She added: "It's a totally different course to the London Marathon apart from the finish. It's quite a technical course so it will be tough. The weather forecast is for it to be very hot but I don't mind the heat, so that will be no excuse."

Bank of Scotland, proud supporter of ParalympicsGB and proud partner of the London 2012 Paralympic Games. Get closer to the Games at www.bankofscotland.co.uk/London2012