Oksana Kosachenko has raised further concerns about the viability of Sochi as host of an F1 race ahead of the inaugural Russian Grand Prix, which is set to take place next year.

The former manager of ex-Caterham man Vitaly Petrov had previously suggested that 'people would not spend their money' to attend the race given the costs involved.

While organisers remain confident about both the circuit and the event, Kosachenko said she wasn't sure Russia had the experience needed to run an F1 race and had further concerns that the plans could fail.

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"The development of motor sport in Russia is at the early stage," she told Al Jazeera. "We don't have experience hosting major international competitions as a result the organising committee is facing a wall of challenges.

"One of them is the lack of experienced staff in the country. Formula One Grand Prix requires around 600 marshals who need to be not only trained for the event but also speak English. In that case we have a big problem as very small percentage of the population can speak English."

Sochi will host a series of demonstrations on the circuit this weekend in preparation for next year's race, despite there still being plenty of work to do on 'finishing touches' to the venue,

"We are still very busy," Oleg Zabara, the deputy general director of Formula Sochi, said. "Although the track is ready to hold the demonstration race, there is some room for finishing touches.

"The laying of asphalt base course is completed. It's a remarkable event for us because the racing cars will sample the track for the first time ahead of the 2014 Russian Grand Prix."