It takes on the right swelling branch Kirchborn and then pulls through the southern tip of the forest Lichteichen where it flows through the Wollwiesenteich, where it gains from the left another inflow.

After re-entry into the field corridor, it soon crosses the county town of Dietzenbach and enters behind it between Dietzenbach and Heusenstamm back into the forest, where she moves past the Patershäuser Hof by its long clearings, here called Liliengraben.

It enters in approximate parallel to the S-Bahn for another forest-and-field section of the Strutäckern in the Offenbach district of Bieber and turns into it to the northeast.

Then Bieber runs from the upper mill underground in a tube and only appears again at the corridor boundary of the place to daylight.

Behind it touches the residential area Markwald of Mühlheim and then flows a little north of it from the left and southwest opposite the Henningweg in the Rodau, which flows into the Main after about a final kilometer Nordlauf then soon.