The following stores carry a large selection of Kosher products for regular kosher grocery store shopping:

GENERAL SUPERMARKETS IN MARINA DEL REY

Costco
13463 Washington Blvd
Marina del Rey, CA 90292
(0.4 mi, 6 min by foot, 4 min by car)

Ralphs
4311 Lincoln Blvd 
Marina del Rey, CA 90292
(0.7 mi, 14 min by foot, 4 min by car)

Pavilions
4365 Glencoe Ave
Marina del Rey, CA 90292
(0.9 mi, 19 min by foot, 6 min by car)

Trader Joe's
4675 Admiralty Way 
Marina del Rey, CA 90292
(1.2 mi, 24 min by foot, 6 min by car)

Whole Foods Market
225 Lincoln Blvd 
Venice, CA 90291
(1.4 mi, 30 min by foot, 6 min by car)

Allen's Market (a small corner shop that has a great selection of Kosher items)
339 Washington Blvd
Marina del Rey, CA 90292
(1.5 mi, 26 min by foot4 min by car)

***

CLOSEST KOSHER GROCERY STORES

Santa Monica Kosher Market
11540 S. Monica Blvd
S. Monica, CA 
(5.1 mi, 15 min by car)

Glatt Mart (Pico)
8708 W Pico Blvd
Los Angeles, CA 90035
(6.6 mi, 22 min by car)

Livonia Glatt Market (Pico)
8922 W Pico Blvd
Los Angeles, CA 90035
(6.6 mi, 23 min by car)

Pico Glatt (Pico)
9427 W Pico Blvd
Los Angeles, CA 90035
(7.1 mi, 21 min by car)