Abstract: This paper presents the implications regarding earthquake behaviour through detailed fault mapping of the western segment of the Eskişehir Fault in light of paleoseismological observations and analytical age data. The stream beds are offset right-laterally by a few meters to a few hundred meters along the western extension of thefault, indicating that the current movement of the Eskişehir Fault is of right-lateral strike-slip character. Findings obtained from paleoseismological trenches in Erikli (Bilecik) and Kandilli (Eskişehir) villages reveal that recurrent surface ruptures occurred during the Holocene Period on the western segment of the Eskişehir Fault. Consideringthe possibility that the 1956 (M=6.5) Eskişehir earthquake may have originated from the central segments of the fault and transferred stress to adjacent segments, it is assessed that there is a high probability of a future earthquake (M ≈ 6.59) on the western segment, which could potentially produce surface faulting following a seismic quiescence period of approximately 1500 years in this segment.