Just a really rough calc to get a general idea of how fast some of the notable early game enemies are, basically.
Remember how you can toss bombs around in Ocarina of Time, and can outrace the explosions of them kind of sort of? Unfortunately finding a good video where the two happen simultaneously is something I'm unable to do, but I've gotten some shots of the two happening in rapid succession, so bear with me here.
First off, Link's around 9-10 at this age, so his height would be something between 133.3 and 138.4 cm: we'll lowball it, both for the sake of being conservative and because Link's a bit on the short side anyways. This gives a result of (118/224 x 133.3) = 70.22 cm, or 0.7022 meters.
Secondly, at that distance, the bomb appears to only be 68 px: this gives us a value of (70.22/68) = 1.0327 cm per pixel from here.
Thirdly, the explosion travels a distance of 168 pixels in 0.28 seconds to reach the other bomb. This makes the explosion travel a perceived 600.00 px/second, or a perceived 6.1962 meters/second.
Now, as for Link? He can sprint at somewhat comparable speeds.
(I'll get this turned into a slideshow ASAP, it's having trouble atm)
And wouldn't you know it, in that same 0.28 second timeframe Link can take a fairly long stride. How long? Well taking his height from before into account (1.333 meters), we have 1.333 x (286.92/228.36) = 1.6748 m/s perceived speed.
Take the two in comparison to one another, and Link is (1.6748/6.1962) = 0.27029 times as fast as an explosive wave.
From here, it's just direct comparison to the speed of an explosive wave, which as I already covered in previous blogs is variable: 5000 m/s is my low-end, and 6900 m/s is my high-end.
One last thing: since the calc was admittedly a bit rough, I'll be axeing one fourth of my final result, just to be safe.
Final Tally[]
Young Link's Speed (Low-End): (5000 x 0.27029 x 0.75) = 1013.59 meters/second, or Mach 2.979.
Young Link's Speed (High-End): (6900 x 0.27029 x 0.75) = 1398.75 meters/second, or Mach 4.110.
Wouldn't you know it, Supersonic+ regardless. If nothing else, it's a good value to scale to for some of the early game bosses, like King Dodongo.