Sochi is a long, thin city on a mountain coast, and that shapes everything: forecourts are strung along the A-147 rather than clustered, and there are stretches of several kilometres with none at all. The map is worth checking before, not during, the drive. The networks you will see most are ЛУКОЙЛ (11), Роснефть (9) and Газпромнефть (3).
More than half the fuel stations mapped in Sochi are tagged as open around the clock, 24 of 38, so a late arrival is rarely a problem. See Sochi on the map →
Plan your stop
In Sochi the filters that actually narrow things down are diesel (20) and LPG (5). Travelling at night, switch on "open now": 24 places are tagged 24/7. When you arrive, a quick confirmation keeps the map right for the next driver in Sochi.