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In "Beyond the Wall" (Game of Thrones, S07E06) Jon Snow and company are trapped on an island in the middle of a lake surrounded by the army of the dead. Right before they are surrounded Jon sends Gendry to run to the wall to get a raven to Daenerys.

How long would it have taken for him to complete the run then for a raven to fly to Dragonstone and finally for Daenerys to ride her dragon to their location?

  • My impression was that Daenerys was already on her way to the Wall long before a raven would have arrived at Dragonstone. It was pure coincidence she happened to find and rescue Jon Snow & co. – RobertF Aug 21 '17 at 16:26
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    There's a breakdown on Sci-Fi.SE: Was Daenerys rescue achieved in a plausible time? – Mathieu Guindon Aug 21 '17 at 16:27
  • @Mat'sMug Nice find! I did not think to look there. We can link that answer to here and close the question. – Matt Aug 21 '17 at 16:33
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    @RobertF - they showed Tyrion trying to tell her to give them up as dead after they showed Gendry saying to send a raven, before she mounted up and took flight with all three dragons. Of course, they do muddle up the passage of time, but I don't think they did it with the intended sequence here. – PoloHoleSet Aug 21 '17 at 16:57
  • @PoloHoleSet Right, but there's no evidence she received a raven from the Wall. I got the impression she had finally resolved to fight the White Walkers & didn't want to wait for Jon Snow's return and "do nothing" as Tyrion suggested. – RobertF Aug 21 '17 at 17:03
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This is crossposted from my answer on a related question over on SFF. I've modified it a little based on discussion in this site and this specific question.

A user on reddit did some calculations to find how long it took for the message to get from the 7 companions to Dany and for Dany to come rescue them. The user estimated it to be around 5 days based on growth rate of ice, the air speed of an unladen swallow raven, and approximate airspeeds for a Dragon and approximate distances. This answer however has been modified for how long they actually spent on the island. It seems people on this site are more convinced it was shorter and may be more interested in the quick version at the bottom.

Link to the original post

I've broken down their answer but provided a link to the original just above.

  • Gendry setting off to them reaching the Island approximately 30 minutes to an hour.
    • For there to have been any reason for the wights not to give Gendry chase he must've gotten a significant distance before the wights caught up to the Fellowship company. They then start running and although IIRC it looks like they run through a canyon, I'd assume they had a bit of a run before they were caught by the wights.
  • The Raven likely took around 3 days to get from Eastwatch to Dragonstone.
    • A raven flying from Eastwatch to Winterfell would be about a day:
      Homing pigeons have been recorded to be able to reach speeds of up to 50mph and although discussions have taken place to the speed of ravens, although no real speed is given, we are led to believe that in-universe ravens are quicker and stronger that in-universe pigeons as stated by Maester Aemon:

      Doves and pigeons can also be trained to carry messages,” the maester [Aemon] went on, “though the raven is a stronger flyer, larger, bolder, far more clever, better able to defend itself against hawks ...

    • Continuing this idea to flying to Dragonstone. It's about the same distance from Winterfell to Kings Landing as it is to Dragonstone. The show claims it to be about 1000 miles from Winterfell to King's Landing (according to the user). This gives us about 3 days of raven flight if we take the 500 mile per day cap set by the users in the discussion above.
  • Dany and her dragons likely took around 8 or so hours to fly to "Snow team 6"
    • The user approximated around 125mph for a Dragon with a rider. Given the size of the Dragons, this seem possible as a normal hawk is able to fly around 70mph. Whether wingspan changes speed is unclear but big birds tend to be quicker than small birds.

This gives us about 5 days of total travel from Gendry running to the Dragons arriving.

The ice aspect is a bit strange. As 10˚F is around -12˚C and doesn't seem that cold for Gendry to be crying about the freezing cold weather. It was likely closer to -30˚C to -40˚C which I guess would make the ice freeze twice as quick. But bearing in mind that the Ice was thin in the first place there might be something that was preventing the water from garnering thickness very quickly. Such as the hot springs which exist naturally in the north (Winterfell's walls, Ygritte and Jon's cave) may have slowed the freezing of the water.


There are theories it can be done in ~3 days.

If we take the 500 miles per day, and the fact that white Ravens can fly from Old Town to Winterfell, it's possible a Raven can fly to Dragonstone from Eastwatch directly. This would cut down travel time to about 2 days of raven flight (at 50mph with rest). If we take a Dragons airspeed to be around 200mph it would do the return flight in 5 hours. Easily done in ~three days, allowing for better calculation for the rate of freezing of the water.

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This isn't in the books, so what we see is all we have, but going purely on what we see in that episode, there are clues that it's probably at least 20 hours:

  • There's at least one whole night, since we see it get dark as Gendry approaches Eastwatch, then we see daylight at the island and we see the party wake up and discover Thoros died in his sleep.

  • The Thoros-fire had gone out completely by the time of the attack, so it'd be at least several hours after sunrise. I think we don't know if their world is like ours with shorter days as you go towards the poles but it'd almost certainly be afternoon, mid afternoon if they do have shorter hours of daylight

So, it's at least a day after the ambush, in the afternoon.


If you want to get into calculations based on estimates of distances that the ravens and dragons flew and estimates of their speeds etc, see this related question on the scifi/fantasy site

However, George RR Martin (author of the novels) has said many times that he's deliberately vague about times and distances because he doesn't want to have to worry about fans making these kind of calculations while he's writing:

The reason I am never specific about dates and distances is precisely so that people won't sit down and do this sort of thing.

My suggestion would be to put away the ruler and the stopwatch, and just enjoy the story.

http://www.westeros.org/Citadel/SSM/Entry/Chronology_and_Distances

...and the show is even less fussy about such details than the books, so I wouldn't recommend this.

  • And burning Thoros gives them heat source to last longer at cold temperatues! Didn't think of that. – PoloHoleSet Aug 21 '17 at 19:02
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    If I remember right there was about 5 seconds of repectful mourning then someone (probably Tormund) walked over and started warming his hands on the human fire. A burning Thoros has many uses, it also adds a smokey wine flavour to any meat you grill over him. I reckon they spent a happy couple of days on that island, living off flame-grilled chunks of the disposable extras who pulled their sledge. – user568458 Aug 21 '17 at 20:51

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