The match was never in doubt courtesy of a Dan Wheeler hat-trick, a Roy Bond penalty, and goals from Colin Morgan, Michael Morgan, Sion Thomas and sub Ian Williams.
Raglan's consolation goal was scored by Martyn Dembicki.
Man of the match for Raglan was Nick Oxford.
Man of the match for Llanarth was Dan Wheeler.
Raglan finished their season in fourth position.
Usk stay gridlocked in fifth position following their 2-3 defeat on 'the island' to Pontypool Town.
Trailing by two goals going into the interval, Usk bounced back to win the second-half with strikes by Rob Watkins and Richard Wakeling to make it all square at 2-2.
Unfortunately for Usk, Ponty poached the win with a goal in the 92nd minute.
Man of the match for Usk was Jamie Hawke.
In Division One, Mardy visited Sebastopol and the game ended honours even on 1-1.
Matthew Skinner scored the Mardy goal 30 minutes in.
In midweek Mardy lost 3-1 away to Pilcs. Daniel Palmer scored the Mardy goal.
Man of the match for Mardy was Owen Edwards.
In just over a week Govilon have played three, won two, and drawn one to keep them firmly at the top of the Division One pile.
In a midweek game, Govilon beat Cwmffrwdoer 6-2 under lights at Pen-y-Pound Stadium. Govilon's goals came via two hat-tricks. One went to Lewis Meadows and the other fell to Ben Bergoyne.
In another midweek game, Govilon won 0-2 away at Blaenavon Blues with both goals being scored by Lewis Meadows.
Man of the match for Govilon was Craig Williams.
Man of the match for Blaenavon Blues was Michael Waite.
Blaenavon Blues had Steve White sent off.
On Saturday the Blaenavon Blues made no mistake in claiming the scalp of New Inn to the tune of 0-4.
Goalscorers were Terry Jones, Carl Haven, Lee Carrick and Marc Browning.
Man of the match for Blaenavon Blues was Craig Harris.
Also in midweek Clydach Wasps were held to a 1-1 draw by Fairfield Utd. Ben Ward scored the Wasps' solitary strike.
In Division Two Prescoed beat Usk Town 'B' 0-7 in midweek, following strikes from Gareth Wesson (4), Kevin Goodwright, Christian Hill and Duane Evans.
Man of the match for Usk Town was Rhys Brooks.
Man of the match for Prescoed was Lloyd Shirley.
On Saturday, Prescoed were at home to Clydach 'B'. At half-time Prescoed just had their noses in front thanks to a goal ten minutes in by Lloyd Shirley.
In the 60th minute Ben Ward levelled the score for Clydach 'B' at 1-1 and it stayed that way until the final whistle.
Man of the match for Prescoed was Robbie Williams.
Man of the match for Clydach 'B' was Nathan Ford.
Prescoed stay top of the division, four points ahead of Clydach 'B' who have a game in hand over Presoced.
Pandy 'B' recorded two victories last week. On Thursday at Lower Meadow they beat Mardy 'B' 3-0 with strikes coming from Ashley Morgan (2) and Jamie Gilchrist.
On Saturday Pandy went on to beat Blaenavon 'B' 2-0 with Jason Wright and Chris Powell doing the damage.
Man of the match for Pandy 'B' was David Lambert.