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Welsh sailor Alex Thomson has halved the gap between himself and Vendee Globe solo race leader Armel le Cleac'h ahead of Thursday's expected finish.

Thomson, 42, trailed by around 70 miles on Tuesday, but cut the deficit to 34 with 309 miles left of the race.

Le Cleac'h was 383 miles from Sable D'Olonne on France's Atlantic coast early on Wednesday.

Bangor-born Thomson and his team claimed a 24-hour world mark of 536.81 miles from Sunday to Monday.

Frenchman Francois Gabart holds the 24-hour record, having set it during the 2012-13 edition.

Gosport-based Thomson is competing in the Vendee Globe for the fourth time, and attempting to become the first Briton to win it.

Dame Ellen MacArthur finished second in the 2001 race at the age of 24.

She says Thomson can still win, but may have to depend on the Le Cleac'h suffering problems.

"It's not out of the question. I certainly felt with the Vendee Globe, until the person who's racing in front of you has crossed that line, it's all to play for," said MacArthur.

"And what we've seen in the past, there are actually some serious failures just hours from the finish. We've even had keels falling off.

"It would be just as easy for Armel to have problems, which we may not know about so it really is all to play for."

Thomson led for much of the early stages and broke two race records prior to being overtaken, with Le Cleac'h moving ahead in early December.

Thomson was nearly 1,000 miles behind at Christmas after his boat's hydrofoil was ripped off in mid-November, but has increased his speed since rounding Cape Horn.