Sergei Vorobiev, deputy chief of the Russian Grand Prix promotion company, said Saturday that he was happy with ticket sales for the inaugural Formula One race in Sochi.
"We have every reason to smile with three months remaining before the GP start," he told a news conference at the seventh annual Moscow City Racing weekend.
"We have already sold half of the overall tickets ammount and received plenty of requests that we still have to satisfy.
"We decided to construct an extra stand at the Sochi circuit to meet the demands of all the Formula One lovers who expressed a desire to attend the inaugural Russian GP."
Vorobiev said that the 5,854-metre racing track in Sochi was almost ready for the visit of an international inspection team ahead of the test race, which is due to take place in September.
"The race track construction works are nearing completion. Charlie Whiting, the F1 race director, has recently visited the track at Sochi and expressed his confidence that everything will be done timely and at top quality," he said.
"We believe that we will finish the track in August to stage the test race in September. Everything is going on according to the plan."
The inaugural Russian Formula One Grand Prix weekend in Sochi will take place on October 10-12.