- What to know
- Lock box key details in Marathon
- How to get Lock Box Keys early in Marathon
- How lock box rooms spawn and function
- Lock box location on Station
- Lock box location on North Relay
- What kind of loot you can expect
- How to complete the Mida faction contract faster
- Making the most of lock box runs in Marathon
What to know
- You need a Lock Box Key to open any lock box chest.
- The easiest way to get keys is through the Mida faction upgrades.
- Lock box rooms do not spawn every match, but chest positions inside them are fixed.
- Each room contains multiple chests, so bringing extra keys increases your value per run.
In Marathon, lock boxes are tied directly to the Mida faction contract and serve as one of the most rewarding mid-to-high risk loot sources in the game. If you are working toward faction progression or simply want stronger gear for future runs, understanding how these rooms spawn and how to access them can significantly improve your efficiency.
Lock box key details in Marathon
| Feature | Details |
|---|---|
| Requirement | Lock Box Key |
| Best Way to Get Key | Rank 4 Maida faction upgrade |
| Other Key Sources | Player loot, high-tier rooms, general containers |
| Maps | Station and North Relay |
| Room Spawn | Random per match |
| Chests Per Room | Around five |
| Loot Quality | Moderate to very good |
How to get Lock Box Keys early in Marathon
The most consistent method is progressing through the Maida faction upgrade track. Once you reach rank four in the Mida faction, you can purchase Lock Box Keys directly. This removes RNG from the equation and allows you to plan your runs properly.
After purchasing a key, you do not immediately drop in with it automatically. You must access the key from the armory during the prepare screen before deploying into a match. If you forget to equip it before dropping in, you will not be able to open any lock boxes you find during that run.

While faction progression is the most reliable method, keys can also appear organically in-game. You may obtain them by eliminating other players who are carrying one, looting high-level rooms, or searching general loot containers. However, this method is inconsistent and not ideal if you are specifically trying to complete the Maida faction contract quickly.
How lock box rooms spawn and function
Lock box rooms are not guaranteed to appear in every match. Their spawn is chance-based, meaning you may load into a match where the room simply does not exist. This applies to both maps where they can appear.
However, when a lock box room does spawn, the chest placements inside that room are fixed. The room’s internal layout remains consistent across matches, even though its presence does not. This means once you learn the layout, you can loot it quickly and efficiently without wasting time searching.

Each lock box room typically contains around five lock box chests. Because of this, bringing multiple keys into a match is strongly recommended. If you only carry one key, you will leave significant loot behind.
If you check a known spawn location and the room is not there, you have two options. You can rotate to the other possible map location in that match, or you can extract and queue into a new game. Resetting the match is often faster than aimlessly searching the entire map for a room that did not spawn.
Lock box location on Station
On Station, the lock box room is located in the northwest corner of the map. You are looking for a structure that is visually distinctive. The room is completely wrapped in blue and has a ghost or cloud-style icon displayed on the exterior. This icon helps confirm that you are at the correct building.

The location sits near the rail line, making it relatively easy to identify once you are familiar with the terrain. Because this is a known high-value area, expect potential player traffic. If you are entering solo, approach carefully and clear the building before committing to unlocking chests.

Once inside, the lock box chest positions are consistent. After your first successful run here, you will be able to move quickly between each chest, minimizing exposure time.

Lock box location on North Relay
On North Relay, the lock box room is positioned near the top area of the map, roughly above the letter “R” on the map overlay. You are searching for a corner room with glass panels that features an O82B marking and a new caloric-style icon next to a radio tower.

This landmark combination makes the building easier to identify once you know what to look for. The presence of the radio tower is especially useful for quick orientation.

Just like on Station, the room may not spawn in every match. If you arrive and the configuration is different, that is your signal that the lock box room did not generate in that instance.

What kind of loot you can expect
Loot quality from lock boxes ranges from decent to very strong, making the key investment worthwhile in most cases. You can expect high-value gear, upgrades, and items that can either strengthen your current run or be extracted for future loadouts.
Because each room contains multiple chests, the overall value per successful room clear can be significant. This is especially true if you bring multiple keys and coordinate with teammates.
When playing in a squad, it is good practice to drop items on the ground after opening a chest so teammates can evaluate and distribute loot effectively. Sharing value increases your team’s overall survivability and extraction odds.

How to complete the Mida faction contract faster
If your goal is specifically to complete the Mida faction contract tied to looting lock boxes, preparation matters more than speed. Enter matches with at least two keys when possible. Prioritize checking known spawn locations early in the match before player density increases around high-tier zones.
If the room does not spawn, extract quickly rather than forcing engagements elsewhere. Re-queueing into a fresh match often yields faster overall progress than extended looting without purpose.

Over time, you will develop a rhythm: prepare in the armory, deploy, check the spawn, clear efficiently, distribute loot, and extract.
Making the most of lock box runs in Marathon
Lock boxes in Marathon represent a calculated risk with strong reward potential. By unlocking the Maida rank four upgrade, equipping your key properly in the armory, and targeting the correct spawn locations, you turn a random mechanic into a controlled farming strategy.
If you plan your runs carefully and avoid unnecessary fights, lock box farming can become one of your most consistent sources of high-tier gear and faction progress.