SK Premium Economy SFO-CPH-OSL €850 - 24280 Miles (Almost all Star Alliance)

SFO-CPH-OSL-CPH-SFO 24880 Miles, €850 Premium economy.

San Francisco (SFO) to Oslo (OSL) via Copenhagen (CPH) — Thu, Nov 16
[Overnight flight]
San Francisco (SFO) to Copenhagen (CPH) — Thu, Nov 16
SAS 936 Dep: 5:30 pm Arr: 1:20 pm 10h 50m Airbus A340
Premium economy (A) [Meal]
Layover in CPH
Fri, Nov 17 1h 5m
Copenhagen (CPH) to Oslo (OSL) — Fri, Nov 17
SAS 458 Dep: 2:25 pm Arr: 3:35 pm 1h 10m Airbus A320
Premium economy (A) [Snack or Brunch]
Oslo (OSL) to San Francisco (SFO) — Sat, Nov 18
[Long layover] [Overnight flight]
Oslo (OSL) to Copenhagen (CPH) — Sat, Nov 18
SAS 1469 Dep: 1:30 pm Arr: 2:40 pm 1h 10m Airbus A321
Premium economy (A) [Snack or Brunch]
Layover in CPH
21h 45m
Copenhagen (CPH) to San Francisco (SFO) — Sun, Nov 19
SAS 935
Dep: 12:25 pm Arr: 2:45 pm 11h 20m Airbus A340
Premium economy (A) [Meal]

How do you get 24,880 miles out of this? The flown miles are only 11,590 miles!

SK A fare is not a F (first) fare class. It is the cheapest available SAS Plus fare (Prem. economy). You need to check the FFP earnings again.

I believe the OP uses A3 where it may be a correct calcualation.

Credits 200% to A3, AI, 150% on a few, 100-125% on most.

100% to UA MP.