Part 4: Cleared Lana's trial — Brooklet Hill

Surf (TM94)

Cleared Lana's trial — Brooklet Hill opens 4 areas.

Where to go

1. Route 6

   Wild: Pikipek 29.6% · Lv 14-17, Espeon 25% · Lv 14-17, Happiny 25% · Lv 14-17, Jigglypuff 25% · Lv 14-17 +10 more

2. Route 7

   Wild: Diglett (Alola) 100% · Lv 16-19, Magikarp 79% · Lv 10-19, Gyarados 50% · Lv 10-19, Starmie 50% · Lv 10-19 +7 more

3. Brooklet Hill

   Wild: Gyarados 100% · Lv 10-15, Magikarp 79% · Lv 10-15, Seaking 50% · Lv 10-15, Goldeen 45% · Lv 10-15 +14 more

4. Royal Avenue

   Wild: Gengar 100% · Lv 29-32, Golbat 40% · Lv 29-32, Haunter 40% · Lv 29-32, Klefki 15% · Lv 29-32 +1 more

Everything you can have caught by this checkpoint · Open the interactive guide

It also doesn't say when New Mauville opens up, so it is in no part above; it has its own route page.