16:10 - Despair for both Schlecks as they limp their way to towards the finish line. It will be back to the drawing board for them and Leopard Trek this winter.

42km - Voeckler is 2:13 off the pace at the finish and protects his fourth spot in the GC. What a great Tour he's had.

42km - Cunego, 5th this morning in the GC, crosses the finish 3:37 down on Martin.

42km - Sanchez is 1:37 down at the finish, with Contador 1:05 down in second place.

42km - It's the 27th best time at the finish for Basso, well off the pace: 3:47.

27km - Cadel Evans crosses the second check with the second fastest time just seven seconds down on Martin. This is his Tour de France to lose now. He's got 32 virtual seconds on Andy Schleck now.

42km - Here's Rolland coming into the finish, and he's giving it his all - and that's why, he comes home 2:50 down, but will hold onto the white jersey in Paris.

15:47 - Neck and neck: there is no time between the two to riders. But has he gone too early? Or is he just better today?

15:45 - The virtual time gap between Evans and Schleck is just 3 seconds - could history be in the making?

15km - Andy Schleck is 57 down on Martin at the first check. That is 36 seconds slower than Evans after 15 of 42 kilometres. Evans is riding into the yellow jersey at the moment...

27km - Rolland is 1:52 down at the second check compared to Taaramae's 1:26.

15km - Voeckler is 57 down at the first check, where as Rolland is 59 down. That's just 16 down on Taaramae so he's looking good for the white.

15km - Cunego is a huge 1:16 down at the first check. His top five position may be in jeopardy.

27km - Taaramae is 1:25 down on Martin at the second check.

15:23 - Evans is onto the first climb and is out of the saddle. According to virtual timing, he is 43 down on Schleck in the GC so has already made up 14 seconds...

15:21 - Evans looks very solid in his usual steady, tucked style, whereas yellow jersey Andy Schleck is rocking his shoulders as he tries to settle into his rhythm.

15km - Rolland comes through the first check 19 down on Taaramae so he's looking good to conserve that white jersey and 10th place in the GC.

15km - Taaramae passes through the first check 43 seconds down on Tony Martin. It's the 7th best time.

15:09 - Up now, Thomas Voeckler, who looks rather lost without his yellow jersey. Still, the Europcar leader has kept the yellow sun glasses as he starts his time trial.

0km - There must be a problem on the start ramp because Contador also wobbles down - just like Gilbert did an hour or so ago. The Spaniard is wearing a red dossard as yesterday'smost aggressive rider. He needed that aggression on Alpe d'Huez when punching out at a crazed spectator dressed up as a doctor got too close... Blazin' Saddles: Nurse Bertie

0km - Italy's Ivan Basso (Liquigas) down the ramp. Basso looked solid in the first week or so, but his Tour tapered off in the Alps and an eighth place in the GC come Paris was not what he envisaged prior to the race.

14:53 - Top ten underway: white jersey Pierre Rolland of Europcar is on course.

0km - Rein Taaramae, the Estonian national time trial champion, is on course. He has got 1:33 to make up on Pierre Rolland if he wants to take the white jersey.

14:30 - In the start zone, Cadel Evans is on the rollers warming up. He looks calm and focused ahead of the biggest day of his career (since the last two times he was in the same position).

37km - Tony Martin is surely going to win this stage: he is 1:06 quicker than De Gendt at the third time check.

14:05 - Johnny Hoogerland at the finish: "I have a double feeling about the Tour because I was in the best shape of my life going into the race but the crash made it hard. I only stayed in because of the supporters, who have been brilliant. Today I didn't hear anything with all the cheers - it was just one hour of adrelaline."

14:00 - Tony Martin has passed two riders now: Sky's Xavier Zandio and BMC's Steve Morabito.

15km - Close shave: Tony Martin, who set the best time at the first check, 22 seconds better than Boasson Hagen, almost crashed into the Sky team car following the rider in front of him. The German saw the car and thought he'd grab its slipstream, before realising that it was driving much slower than him. Martin just managed to pull clear of the car, but so nearly clattered into the back. That'll teach him. He would have lost a second or so there.

42km - Belgian Thomas De Gendt crosses the finish line a slender one second faster than Richie Porte to take the provisional best time. He was 18 seconds up at the third check so tired a little towards the finish.

27km - De Gendt takes a huge 24 seconds off Cancellara's time at the second check. That's 25 seconds ahead of the man who is the current leader, Richie Porte.

42km - Johnny Hoogerland salutes the crowd twice with a big smile as he crosses the line more than four minutes off the pace set by Richie Porte. The Dutchman is a popular figure on the race following that terrible crash in stage nine.

15km - Double stage winner Edvald Boasson Hagen (Sky) is having a storming ride: the Norwegian time trial champion sets the best time at the first check, three seconds ahead of De Gendt. Boasson Hagen, like countryman Thor Hushovd, is wearing a black band around his arm to mark his sympathies to the victims of yesterday's atrocities in Norway.

13:25 - The race is LIVE NOW on British Eurosport (Sky 410 / Virgin Media 521) and is also available on your PC via the Eurosport Player: click here to subscribe

13:20 - The race for the white jersey is still very much alive, with France's Pierre Rolland moving into the lead after yesterday's spendid win. Rolland leads Rein Taaramae by 1:33 in the GC, but in the Grenoble ITT during the Dauphine, the Frenchman conceded 2:57 to the Estonian and so he'll have his work cut out. White jersey standings

13:10 - The race for the green jersey is still on, with both Mark Cavendish and Jose Rojas being docked 20 points yesterday for finishing outside the time limit (along with another 80-odd riders). Cav is on 280 points, with Rojas on 265 and Philippe Gilbert on 230. With an intermediate sprint, plus the final bunch sprint, on the Champs Elysees tomorrow, the destiny of the green jersey is still undecided - although Cav will be confident of victory in the stage and the jersey competition too. Green jersey standings

42km - Kristjan Koren posted the second best time, 54 down on Cancellara, while Malori put in the second best at 56 seconds. At the start, it's Luis Leon Sanchez of Rabobank on the ramp.

12:55 - Well, one man who's not confident of a Andy Schleck victory is his own father, who said: "I don't think it's possible. Cadel Evans is one of the best time trialists in the world, and he already knows the time trial well from the Dauphiné. But I still have hope, and I know that the last week of the Tour also means different parameters. Both Fränk and Andy are strong in the last week, and perhaps Cadel will have a bad day."

37km - At the third check at Gieres, Koren slowed and set the fourth best time behind Westra, Malori and Cancellara.

15km - Italian time trial champion Adriano Malori (Lampre) set the third fastest time at the first checkpoint at Vizille. Malori was 20 seconds down on leader Cancellara, with Liquigas rider Kristjan Koren in second at 10 seconds.

12:30 - Britain's David Millar, the Commonwealth Games time trial gold medallist, is on course now. Johnny Hoogerland, the rider who was ripped to shreds by barbed wire when a car drove him off the road two weeks ago, is up next.

12:25 - Cadel Evans is a better time triallist that both Schleck brothers, but on two occasions the Australian has failed to overturn a deficit on the Tour's final ITT, finishing runner-up on both occasions (in 2007 and 2008). Last year, however, Evans finished 4:43 slower than Andy Schleck in the final ITT - although the Australian was carrying an elbow injury and wasn't riding it competitively as he was outside the race's top 20.

12:00 - A few starting times to remember: 12:38 - David Millar (Garmin), 13:26 - Tony Martin (HTC), and then the top ten at three minute intervals from 14:51, culminating with Andy Schleck at 15:18.

11:45 - Spartacus had just set the fastest time at the finish. Cancellara's effort of 57:15 is the new landmark time, 57 seconds faster than Westra. Interestingly, Andy Schleck was in the Leopard Trek car following his team-mate there - the yellow jersey watching how it's meant to be done ahead of his all-important ride later today. 57 seconds - that's the same amount of time that Schleck must keep from Evans if he wants to win this Tour de France...

11:30 - Live coverage of the time trial will now commence. The Tour waits until its penultimate day for its first and only individual time trial – and coming right after three successive days in the Alps, it's going to be very tricky indeed. The route around Grenoble is similar to that used in the ITT in June's Criterium du Dauphine, which was won by Tony Martin of HTC. Stage 20 guide: The decider

- - We'll have full live commentary for you around 11:30 when the big guns are preparing for the off. Until then, enjoy our live timing service.