Pokemon Diamond and Pearl Route 224 and Marley Walkthrough

Enter Victory Road's newly opened rear section, escort Marley through high-level double battles, and fully clear Route 224 up to the polished stone. This standalone section joins the route plan to the original Diamond/Pearl map, encounter, trainer, item, and script data; Platinum tables are not substituted.

Route Plan

Return to Victory Road after the National Dex; enter the east rear room; meet Marley; use her Arcanine and free healing to clear every trainer and item; escort her to the Route 224 exit; sweep Route 224's land and water branches; inspect the polished white rock; reserve its event extension for Oak's Letter.

• Route 224 itself is normal National Dex postgame content. Only the white-rock event and path to Shaymin require Oak's Letter.
• Marley heals after battles and forces doubles, making her escort the best time to defeat the rear cave's paired Ace Trainers.

Exact pret map constants (4)

MAP_VICTORY_ROAD_1F_BACK_2 MAP_VICTORY_ROAD_1F_BACK_1 MAP_VICTORY_ROAD_1F_BACK_3 MAP_ROUTE_224

Wild Pokémon

Each area below has its own table, split by encounter method. Standard grass and cave rates merge every base slot for a species and are shown per time window: morning 04:00-09:59, day 10:00-19:59, night 20:00-03:59. Swarm, Poké Radar, and GBA dual-slot replacements keep their own labeled rows. Underlying slot odds: grass 20/20/10/10/10/10/5/5/4/4/1/1; Surf and Old Rod 60/30/5/4/1; Good and Super Rod 40/40/15/4/1.

Route 224

Victory Road 1F Back 1

Victory Road 1F Back 2

Victory Road 1F Back 3

Trainers

Field order follows the map's object-event order. Full teams include explicit held items and moves when trdata defines them; cash rewards use the in-engine final-party-slot level and trainer-class multiplier formula.

Items

Hidden Items

Puzzles, Warps, And Switches

1. The rear cave has Strength and Surf loops around paired trainers. Clear every side chamber before taking Marley to the exit because she leaves at Route 224.
2. The polished stone at Route 224's end does nothing without the Oak's Letter event flag; do not present glitches as an alternative route.

Boss Strategy And Partners

Completion Checklist

• Complete the currently reachable part of this route plan: Return to Victory Road after the National Dex; enter the east rear room; meet Marley; use her Arcanine and free healing to clear every trainer and item; escort her to the Route 224 exit; sweep Route 224's land and water branches; inspect the polished white rock; reserve its event extension for Oak's Letter.
• Review all 43 encounter rows across the per-area tables, including game markers, method band, time-of-day rates, levels, and each conditional requirement; mark conditional rows for their stated revisit.
• Defeat or deliberately skip every currently reachable trainer row; leave HM-, story-, or National-Dex-gated rows checked only after their access requirement is met.
• Collect currently reachable visible/scripted items and berry trees, use the Dowsing Machine for reachable hidden rows, and retain every explicitly gated row for the named cleanup visit.
• Resolve every currently available puzzle note, boss branch, and partner scene before opening the next section.

Sources And Validation

• pret/pokediamond at commit 038cccaed5de8f013875bc5d734f912d1de08e0f: map_header.c, D/P encounter archives, trdata.json, zone events, script archives, item tables, and trainer graphics.
• Encounter slots were decoded from exact 424-byte D/P members and cross-checked against Gen IV slot behavior; the 0x6C pair is day, morning uses base slots, and 0x74 is night.
• Coordinates remain visible as QA anchors, while each hidden row also provides a plain-English map-region instruction.
• Generation-wide systems that are not tied to a normal map archive—Honey Trees, Great Marsh daily rolls, Trophy Garden, fossils, Pal Park, and event items—are explicitly curated in their dedicated system pages.