Back in the 1970s, milk runs were my best friend. All I wanted to do was maximize my time in the air, aboard as many different airlines as possible. With absolutely zero interest in flying aboard private planes, I was all about flying aboard airliners, taking "air tours" across this great broad continent of ours.
Back in 1977, I logged the following flight in First Class aboard Alaska 65, the milk run between Seattle and Anchorage. Today's flight 65 is but a shadow of its former glorious routing, which went SEA-KTN-WRG-PSG-JNU-YAK-CDV-ANC aboard a 727-100 when I flew it. The entire journey took a little over 8 hours and offered full breakfast and a sandwich plate enroute.
Another great flight was had aboard a Hughes Airwest DC-9-30 between Salt Lake City and Los Angeles stopping in PDX, RDM, LMF, SMF, SFO and MRY enroute.
Hughes Airwest also came through on a roundtrip flight between Denver and Seattle in 1980 routing DEN-GTF-FCA-GEG-SEA, returning SEA-GEG-LWS-BOI-TWF-SLC-DEN aboard a pair of DC-9-30s.
The only transcon milkrun I ever did was aboard Eastern in 1977 from Portland, OR to New York-JFK stopping in SEA, STL, CLT and RDU along the way.
One flight I never did get a chance to fly but always wish I had was NW 109, a 727-200 departing Newark at 7:15a headed for Seattle with intermediate stops at PHL, CLE, ORD,MSP, JMS, BIS,BIL, HLN, MSO, GEG and PDX. Arrival in Seattle was twelve hours later at 7:19pm. A breakfast and three snacks were served enroute. Back in those golden days of jet travel in America, a snack was often larger than the so-called "meals" offered on today's services.
I don't know if there's any interest on this thread for such things (in which case simply ignore them) but here are a couple of links to trip reports I wrote describing some of those flights from the 1970s...
Denver to Honolulu via Canada in 1976 (On a trip that was supposed to go to Mexico!)
DENVER TO ALASKA ROUNDTRIP via SO, TI, DL, AA, AS, WC, CP, PW and UA