Any merit to folding the river vs a tight vilian?

Posted 8 years, 3 months ago

Blinds: $2.50/$5.00 (6 Players) BN: $1872.95
SB: $611.14
BB: $641.06 (Hero)
UTG: $1117.37
MP: $555.50
CO: $549.38

Preflop ($7.50) Hero is BB with 6 A 6 4

UTG raises to $17.50, 4 folds, Hero calls $12.50

Flop ($37.50) K A 6

Hero checks, UTG bets $23.50, Hero calls $23.50

Turn ($84.50) K A 6 8

Hero checks, UTG bets $61.12, Hero calls $61.12

River ($206.74) K A 6 8 7

Hero checks, UTG bets $152.80, Hero calls $152.80

Final Pot UTG wins and shows three of a kind, Kings.
UTG wins $509.34
Rake is $3.00

You can never get away from the river right? Villain does seem tight. and there is no merit for raising vs villain any earlier is there?