Ugh... I have to fly SEA-PKC but my employer only authorized me economy. Thirty+ hours in economy will be painful
I'm hoping for upgrading on Delta using miles between JFK and SVO and then paying out of pocket for business on SVO-PKC, difference between Y and D is $250 but after so much flying I think it'll be worth it.

Another option is to take a break in Moscow (but I've been there gazillion times already!)...

I have to go east in order to get to the west. Routing going west from SEA absolutely such... SEA-JFK-SVO-PKC seems to be the best one.
Instead of 2 segment path: 6257 mi
SEA (47°26'56"N 122°18'34"W) NRT (35°45'53"N 140°23'11"E) 300° (NW) 4769 mi
NRT (35°45'53"N 140°23'11"E) PKC (53°10'04"N 158°27'13"E) 30° (NE) 1488 mi

I have to do 3 segment path: 11286 mi
SEA (47°26'56"N 122°18'34"W) JFK (40°38'23"N 73°46'44"W) 82° (E) 2421 mi
JFK (40°38'23"N 73°46'44"W) SVO (55°58'22"N 37°24'53"E) 34° (NE) 4661 mi
SVO (55°58'22"N 37°24'53"E) PKC (53°10'04"N 158°27'13"E) 36° (NE) 4203 mi