LATEST ACTION (all times BST)
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1508: That's it for today, bar the medal ceremony and some nice shots of hilltop villages in northern Italy.
Hope you've enjoyed our coverage. Tomorrow Phil Harlow will be your host for the men's time trial.
1459: Armstrong is off the saddle in the home straight but it's not enough - she finishes in fifth.
Amber Neben of the USA is the new world champion, while Christiane Soeder of Austria takes silver and Germany's Judith Arndt bronze.
GB's Emma Pooley comes in eighth, Sharon Laws in 19th.
1457: Neben stifles a smile backstage - she knows she's won the world championship.
1456: Christiane Soeder of Austria moves into the silver medal place ahead of Arndt. Pooley's now in seventh.
One kilometre to go for Armstrong.
1455: So the top three is currently Neben, Arndt and Antoshina. There's probably only Armstrong of the three riders left who can deprive Neben of the rainbow jersey.
1452: Amber Neben nervously watches the monitors in the holding area, as her compatriot Thorburn crosses in tenth place. No US clean-sweep. Phew.
1450: Didi the Devil, the famous Tour de France spectator, is among the crowd at the roadside. How the devil does he fund all his travels?
1448: It would be nice to get some times for the US's Christine Thorburn - the States could potentially clean up here.
1447: Just over a second separates Armstrong from Arndt for a silver medal, at the second checkpoint.
Susanne Ljungskog of Sweden nudges Pooley into fifth.
1445: Jeannie Longo comes home in eighth place. How does she do it at nigh on 50 years old????
1443: Pooley has finished in 34:48.87 - fourth place. As we thought up front, the course wasn't tough enough for the lass from Norwich.
1439: Germany's Arndt edges Antoshina into third place.
1438: "A little bit more news on Emma Pooley would be nice" - BBC Sport's Hugh Porter.
You're not kidding, mate.
1436: Pooley was third quickest at the first checkpoint - interestingly, ahead of Armstrong who's just passed.
1432: Neben snatches the lead from Antoshina with a time of 33:50.35.
Still no data on Pooley.
1424: Kristin Armstrong powers out of the start house - all of the riders have completed or are on the course.
1423: Germany's Charlotte Becker knocks Samplonius into the bronze medal position - cue more musical chairs.
1420: Amber Neben of the USA takes 25 seconds out of Antoshina at the second checkpoint. Still no time information for Emma Pooley.
1418: Diana Ziliute of Lithuania narrowly pips Whitelaw for third place; there's a load of seat shuffling going on backstage where the top three riders sit watching events unfold on the monitors.
1416: The Grande Dame of cycling, Jeannie Longo, is out on the course and Switzerland's Karin Thürig has just set off.
No word on our Emma as yet.
1413: Russia's Antoshina takes over as the leader in 34:14.74. Samplonius is second and Whitelaw is third.
1411: Pooley's on the road. Come on Emma!
1410: The Canadians don't have the one-two for long; Australia's Vicky Whitelaw is now second, in 35:27.58.
It's fast and furious now.
1408: Spoke too soon. Canada's Julie Beveridge has knocked Laws out of third with a time of 35:44.91.
The Canucks are now first and second.
1406: Laws still sits in third, though she's actually sitting next to Samplonius, having a good old chinwag backstage, so to speak.
1404: Germany's Judith Arndt sets off - she's set to be one of Nicole Cooke's big rivals in the road race on Saturday.
Four minutes to Pooley's start.
1402: The Russian slices 24 seconds off Samplonius's time at the second check. Hugh Porter's beginning to get excited on the BBC commentary.
1400: Russia's Tatiana Antoshina has just posted the fastest time at the first checkpoint as Spain's 'Itchy' finishes in seventh at this stage.
Wonder who might be described as 'Scratchy' in this scenario?
1356: Laws strains up the last climb and into the home straight to finish in 35:54.41 and go into third place.
1355: Samplonius still leads, as the tenth rider - Jarmila Machacova of the Czech Republic - comes across the line.
1350: It'll soon be time to doff our caps - or chapeaux - to France's Jeannie Longo, who turns 50 next month. She's off at 14:10.
1347: "Iturriagaechevarria Mazaga. Pronounce, 'Itchy'."
jophinejophine on 606
1345: Laws clocks 23:02.68 at the second checkpoint - around 38 seconds down on Samplonius.
1343: Canada's Samplonius takes over two minutes out of Zugno though, finishing in 34:59.26. So the 40-year-old leads the early standings.
1339: Bertine is home in the Varese Hippodrome as the first rider to finish, in a time of 39:11.96, but Zugno's right on her tail in 37:32.58.
1332: Laws goes through the first checkpoint in 11:53.72 - six seconds behind Samplonius.
1330: Pooley's on the turbo trainer, looking very focussed.
Meanwhile, I'm trying to figure out how to pronounce this Spanish rider's name: Eneritz Iturriagaechevarria Mazaga.
1329: Samplonius clocks 22:24.11 at the second checkpoint - nearly two minutes faster than the time set by Zugno.
1326: Canada's Anne Samplonius - 40 years old - is now fastest at the first checkpoint.
1319: GB's Sharon Laws has set off, with Olympic silver medallist Emma Pooley due out at 14:08 BST.
Go on Sharon!
1316: The next rider - Italy's Anna Zugno - is already 37 seconds ahead of Bertine.
1314: Ms Bertine of Arizona/St Kitts is past the first checkpoint in a time of 13mins 22.41secs.
1311: "Kathryn Bertine is from Arizona, but is riding for St.Kitts & Nevis.
Anyone know if she's ever been there? I'm wondering if the TT course is longer than any route on St.K&N."
jophinejophine on 606
Good question! Welcome aboard sir.
1308: The weather's perfect in Varese - around 18 degrees and sunny. Unlike here in gloomy London.
1305: Turns out Nicole Cooke isn't riding after all, according to Mr Porter.
1303: The riders are out on the road already, for what the BBC's commentator Hugh Porter describes as the race of truth.
1301: The women's route is over 25.15km, and is rolling rather than hilly, so it may not suit the diminutive Pooley. The US's Kristin Armstrong - no relation to a certain Kazakh-bound bloke - may, however, find it perfect.
1255: Good afternoon, buongiorno!
Welcome to our live coverage of the women's Road World Championships time trial in Varese, where we're hoping for big things from GB's Emma Pooley, and perhaps even Nicole Cooke and Sharon Laws.