Upvote:2
Deutsche Bahn website finds a few connections, e.g.
Praha hl.n. Mi, 21.08.13 ab 05:16 EX 521 Express-Zug
Pardubice hl.n. Mi, 21.08.13 an 06:21
Wait time 10 Min.
Pardubice hl.n. Mi, 21.08.13 ab 06:31 Sp 1915 R 1915 Eilzug
Wroclaw Glowny Mi, 21.08.13 an 10:28
There doesn't seem to be any direct train though.