I maxed it in Bullroarer and compiled the special rewards in this blogpost in case anyone's interested. It has pictures of the 2 cosmetic pets too.

Link here

Overall, the track yielded:

Enhancement runes:
  • 36 yellow*
  • 56 purple*
  • 40 teal*
  • 33 gold
* these are affected by some RNG so you may get a bit more or less than my results here

Sealed Traceries:
  • 12 purples
  • 9 teals
  • 3 gold

Tokens:
  • 6 shattered
  • 3 cracked

Embers & Figments Chests: 4 (so, 4k of each currency)

For the special rewards
  • 2 Word of Craft Recipe Selection Boxes,
  • 1 Heraldric Recipe Selection Box
  • 2 Bound Black Steel Key
  • 2 Cosmetic pets