Ran on before (prodramōn eis to emprosthen). Second aorist active participle of protrechō (defective verb). “Before” occurs twice (pro- and eis to emprosthen).
Into a sycamore tree (epi sukomorean). From sukon, fig, and moron, mulberry. The fig-mulberry and quite a different tree from the sycamine tree in Luk 17:6, which see. It bore a poor fruit which poor people ate (Amo 7:14). It was a wide open tree with low branches so that Zacchaeus could easily climb into it.
That way (ekeinēs). Feminine for hodos (way) is understood. Genitive case with di in composition (dierchesthai) or as an adverbial use.