The Awynturs off Arthur is written in Stanzas of 13 Lines (13 lines in a Stanza).
Awntyrs is composed in one of the most demanding and richly echoic verse forms in the English language. Each stanza contains thirteen lines, rhymed ababababcdddc. The first nine verses are alliterative long lines, structurally bound by four stresses in addition to the end rhyme. The last four verses of each stanza form a "wheel"; each line contains two (sometimes three) stresses, while the first three rhyme on the same sound, and the last (often the shortest) line rhymes with the long ninth line. The density of alliteration in Awntyrs is higher than that of any other Middle English poem, with almost half its long lines containing four alliterating stresses. Moreover, more than half the stanzas begin with a couplet bound by identical alliteration (and six stanzas extend this identical alliteration through the first three couplets). In addition to this bonding within the stanza through repeated sound patterns, each stanza is linked to the preceding and following stanza through verbal concatenation: the first line of every stanza incorporates a word or phrase from the last line of the previous stanza. (In some stanzas the ninth line additionally repeats a phrase from earlier in the stanza, further linking these words with the last line of the wheel.) Finally, the last lines of Awntyrs repeat the first line, linking these two stanzas and thereby imposing a circular, iterative structure on the entire poem.

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