A virtuosic showpiece, this Toccata is famous for its relentless, motoric drive and harsh, percussive character. It stands out as one of the most physically demanding pieces in the 20th-century piano repertoire.
Developing the stamina and rhythmic precision for the constant, rapid repeated notes is the essential technical hurdle.
Comparable difficulty and character — good candidates for what to learn next.
Toccata in D minor (Op. 11) is rated Henle level 8 of 9 — concert repertoire, roughly diploma level. In the RCM system it corresponds to about level 10.
You should be comfortable at Henle level 8 — meaning you can already play level 7–8 pieces cleanly. Learning it one level early is possible as a stretch piece, but more than that usually leads to months of frustration.
A typical performance of Toccata in D minor (Op. 11) lasts about 4 minutes.
Toccata in D minor (Op. 11) is available as free public-domain sheet music on IMSLP — the score is linked directly from this page.
Pieces at a comparable difficulty and character include Piano Sonata No. 7 in B-flat major by Sergei Prokofiev, Autumnal by Sergei Prokofiev, Wanderer Fantasy in C major by Franz Schubert — see the full similar-pieces list on this page.