Mark Webber will be looking to build on his win in Hungary and stretch his overall lead in the championship as Formula One's summer break comes to a close with the Belgian Grand Prix on Sunday.

The Red Bull driver has won two of the last three races to lead McLaren's Lewis Hamilton by four points in the standings with 161 points. Teammate Sebastian Vettel is third with 151 points, Jenson Button of McLaren is on 147 and Ferrari driver Fernando Alonso is next with 141.

Webber has rallied around problems within the team to overhaul Hamilton and Vettel, taking advantage of the championship's fastest car to show he's a capable No. 1 for Red Bull.

Red Bull has been the pace setter all season but Webber has been able to turn that into points better than Vettel. The Australian driver expects the car to maintain its season-long edge at one of F1's most iconic races in the rural Ardennes countryside.

"I expect we can do well there. Whether it's as well as I did in Budapest is a question for everyone," Webber said. "But I know our team is ready."

All drivers are looking forward to tackling high speed corners like Eau Rouge and Pouhon come Sunday's 44-lap race. Vettel is worried about whether Red Bull can command in the straights, however.

"Our weakness will be the long straights and, with uphill sections too, we know it won't be easy for us," the German driver said. "But I am optimistic for the race."

McLaren will be keen to rebound from the disappointment of Hungary, where Hamilton failed to finish due to a gearbox problem and Button was eighth. McLaren hasn't won a race since Hamilton triumphed in Canada.

"We know that we have some catching-up do to — it's still important that we regain the momentum we'd reached earlier this season," Button said. "While I don't think these two European races will be pivotal to the title fight, it will be harder to introduce bigger upgrades to the car at the end-of-season flyaways so it's important for the whole team that we score well in both events."

With the Italian race closing the European leg of the calendar on Sept. 12, points will be important now as drivers and team crews return refreshed from a four-week break.

Button took part in a triathlon while Alonso spent his time biking in the Asturian hills, and Ferrari team principal Stefano Domenicali is hopeful the Italians will return inspired and ready to reap the momentum that has seen Alonso gain in the standings.

"The Belgian track is possibly the most appealing of the entire season," Alonso said. "I have a good feeling following on from the positive results obtained in Germany and Hungary."

Points will be even more valuable to Ferrari now since it risks being docked or losing all of its points from Alonso and Felipe Massa's 1-2 finish in Germany after Massa gave way for Alonso on team orders. Governing body FIA will hear the case and decide whether to impose a sanction on Sept. 8.

Rubens Barrichello will suit up for race No. 300 — a record — with Williams.

"I took my first pole there and have won at Spa while racing in the lower categories so I'm looking forward to it," the 38-year-old Brazilian driver, who has won 11 times since his debut in 1993, said. "It feels great to reach this milestone."

Force India is not expecting a repeat of last year when Giancarlo Fisichella took pole and then finished behind race winner Kimi Raikkonen of Ferrari for the Indian team's best-ever result.

"We have to look at what we are doing now rather than to the past," driver Adrian Sutil said. "I'm pretty confident that we've got a car that will still suit the track very well."

Practice starts Friday, with a third session Saturday morning before qualifying.