Somerset raced to the second highest run chase in the 145-year history of the County Championship thanks to the fastest first-class hundred of the season from Pete Trego.

The win over Yorkshire at run-drenched Taunton kept Somerset's hopes of a maiden title alive after leaders Durham also claimed victory.

Somerset CCC had been set a mammoth 476 to win in 90 overs but needed only 85.3 thanks to 96 from Marcus Trescothick, 131 from Arul Suppiah and Trego's 103 not out – his first century since 2007.

The win was also the fourth highest chase in English first-class cricket and the eighth best anywhere in the world.

Trego completed his hundred with his ninth six as heavy rain began to fall.

In total his hundred took 54 balls and also included six fours. The final six left one needed and Zander de Bruyn, who had played another assured knock of 27 not out, thumped the winning four.

But Trego was the star. He moved from five to 47 in just 11 balls as he caned 17 and then 25 off successive overs.

There was sympathy for former England bowler Matthew Hoggard, who finished on the losing side despite claiming eight wickets. Yorkshire had declared 4.4 overs into the day on 363 for five. But the tone was set when Trescothick thumped the second ball of the innings for four. Suppiah played slightly the more freely in the early stages, driving fluently and reaching his 50 in 65 balls.

In the light of Max Waller's injury, Suppiah's useful spin bowling was always likely to ensure he retained his place but the second century of his career made certain of it.

Trescothick continued to make the game look easy, demonstrating all his trademark shots including a dab over the slips off a Shazad bouncer that carried for six.

He looked certain to add to his second day 146 by scoring a hundred in both innings of a match for Somerset for the first time.

The left-hander achieved the distinction for England in the Edgbaston Test of 2004 and was just four short of a rare double when he tried to leave a short ball from Hoggard and inadvertently played on.

Suppiah reached his hundred with another stylish clip, this time through mid-wicket for four off James Lee.

Sixes off Jacques Rudolph and Rafiq helped him past his previous career best of 123 at Derby four years ago and there could be no blame attached to his demise when he attempted to hoist the latter bowler again only to sky to mid-on.

Suppiah's exit after 14 fours brought the promotion of David Stiff, who swatted four sixes and four fours in a 32-ball career best 49.

The former Yorkshire bowler made his previous top score – 28 – in the reverse fixture last month and he opened up with a straight six off Lee, using his huge forearms to great effect.

After being dropped at third man, two more maximums flew over the keeper's head before the most

entertaining of an enthralling bunch sailed clean over the cover boundary to Hoggard's bewilderment.

James Hildreth missed a pull at Hoggard and was bowled for 18 and Kieswetter was bowled by a sharp turning delivery from off-spinner Rafiq for 17.

Skipper Justin Langer (24) played second fiddle to Trego until he edged Patterson behind to end a stand of 76 in seven overs.

Trego and de Bruyn then added 65 more in fewer than eight overs to ensure a third successive victory and one that those present will never forget.