PARIS (AP) -- With Spanish superstar Alberto Contador suspended for doping, the Tour de France looks wide open. Australian veteran Cadel Evans will defend his title, and Olympic champion Bradley Wiggins hopes to give Britain its first victory at cycling's biggest event -- just days before the London Games. The 99th Tour starts on June 30 in Liege, Belgium, and will cover 2,162 miles over three weeks. Race planners have given slightly more weight this year to time trials compared to mountains, generally seen as the twin pillars in cycling races that separate title hopefuls from the stragglers. The Olympics, which start less than a week after the Tour ends, is casting a shadow on this year's race -- forcing some to choose one event or the other. Belgian sprinter Tom Boonen and promising American Taylor Phinney are skipping the Tour to focus on the London Games. American Tyler Farrar -- who plans to ride in both -- has said it's "a little frustrating" that cycling has two of its biggest events nearly back-to-back. Once again, cycling's longtime doping scourge looms large. Contador, the biggest name in cycling since the Lance Armstrong era, had one of his three Tour titles stripped in February and was banned from racing through August this year after he tested positive for the banned stimulant clenbuterol in the 2010 Tour.