A few things in advance:

I tried to write the table in a specific order if possible so you don't have to fly back and forth over the whole map, but I wrote the runes you can find in caves seperately, because they require some preperation and even in some easier caves you can't just rush in.

You can collect the runes on your mount which makes it safer to get them and this way even your dino receives the x4 xp bonus for the 600 seconds.
The rune icon serves only as counter and if you hold "H" you can see how much you already got.
The icon does not disappear after you collected all runes, so better get used to it.

I recommend sticking to the order so you don't loose track, but you don't have to do that, this guide is intended to help you and not limit.
I'm only saying this because you can see how many are missing, but you can't see which ones are missing.

There are the wikis or videos that tell you the coordinates, but sometimes important additional information about the locations or the caves where the runes are is missing.
I have collected all runes myself and can provide information to things like rune locations that go beyond what your GPS can display or those that are hidden and this guide should compensate
that.

A GPS is necessary, otherwise the coordinates would be useless, but I highly recommend the use of a Desmodus, because the other realms are treated like caves and some locations are high up.
Also the caves of Fjordur are not designed for a pure land mount, so you have to get a Rock Drake or a Shadowmane, a Desmodus a glider / climber or have cave flyers enabled.
Otherwise you'll need too many Grappling Hooks and Climbing Picks.

For some caves you will need SCUBA gear, Lesser Antidote, Fur and Ghillie armour for hypothermal and hyperthermal insulation and a light source (preferably a light pet).
A hazard suit is not needed.

And that's it, I wish you a good hunt for the runes.

At this point you should be halfway done.

Creatures can have levels up to 600.
You have to get over the lava, so a cave flyer or Grappling Hooks are needed as well as
Bug Repellent and Lesser Antidote for the creatures inside.


Maximum creature level is 300 except for the smaller bugs which can have level 450.
You'll need climbing gear for this, but a Desmodus can also completely traverse the cave.
Paths may looked blocked, but there is a small shaft to the next area that is sometimes above you.



Creatures can have a level up to 300.
Lesser Antidote is needed as well as a cave flyer or many Grappling Hooks.



The level cap for water creatures is 150 and for land 300, except the Megalosaurus which spawns with a level maximum of 150.
You need something to get back up after you collected the rune in the water and you may also bring a Lesser Antidote for the Onyc.
There is another entrance at 03.4 / 32.7 you can use as exit because you can leave the cave easier through that path, if you don't mind a few Purlovias.



The creatures on land have a level limit that is twice as high as normal, while those in the water can have a level that is three times as high.
Don't fall down to the water area or you never be able to get back up without climbing gear or tames.



Creature levels up to 300 except for small bugs.
You need climbing gear or a flyer to get all runes and also Lesser Antidote against swamp fever and mega rabies.
You also need something to deal with the poisonous air.



There is another entrance at 86.2 / 05.3.

If you go back to the bridge and look east you can see another cave at the same height.
The entrance is by the small purple light (not the large crystals).
Normal levels for creatures inside.
Bring Lesser Antidote because of the Onyc.



Creatures can have a level that is four times as high as normal (600).
Bring Lesser Antidote and good Ghillie Armour.
You have to fly / climb up after you collected the last rune.


Normal creature levels, but Onyc can cause mega rabies.


Creature levels up to 300.
SCUBA gear is required because, unlike the other caves, this one is completely underwater.


Creatures spawn at normal levels, but the entrance of this cave is deep underwater while the cave itself is on land.
The Abberant Megalania inside can cause mega rabies.



The creatures inside can have a level of 300 except the Desmodus and Megalania, they can only reach level 150.
Mega rabies from Onyc and Megalania as well as the many traps in the Nidisheim Depths can pose a threat.
You need gear or a tame to climb up the shaft, a Shadowmane can easily jump up there.


There is a level limit in this cave up to 600 except for the Megalosaurus which can only reach level 150.
You can bring a Lazarus Chowder or SCUBA gear for the water part and Lesser Antidote for the actual cave.


You can breathe inside the cave and it contains no creatures, but you still have to dive through the water entrance.

Remember to cryopod your tames before you go back, because my Desmodus vanished after that but appeared right in front of me after teleporting back to Asgard and to Midgard again.

The temperature in this realm can drop down to -54°C (~129°F) so bring enough hypothermal insulation with you.

While the temperature in Jotunheim drop below zero, the coordinates in Vanaheim can do the same and can even go beyond 99.9.
I can give you approximate numbers of the coordinates, but your GPS will still only show 0.0 or 99.9.
That makes it harder to find the runes, so I added screenshots and hope they will help.



standing on 18.7 / 99.8
go east across the trunk
the rune is on 18.8 / 101.0



This one is inside the borders


standing on -00.5 / 100.5 facing north
the rune is behind the waterfall
at -03.0 / 99.7


standing at -03.0 / 99.8
fly straight up from the waterfall and look to the east
the rune is on the top of the rock at -03.0 / 102.0



those three are inside the borders again



standing on 00.6 / 69.8 facing north
go across the Moonwell Lake and a bit further
the rune is in a corner at -07.5 / 68.8



the last two runes are inside the borders again

I hope you could follow the guide and manage to collect all runes, it is a hard challenge to do so, but you can spend your extra points to make your life easier.



That's all from my side, enjoy your time in the ARK - goodbye!