At Trim, the route bypasses the town centre along the Inner Relief Road, with junctions to the R160, R158 and R161. From Trim the R154 runs north to meet the N51 at Athboy.
At Trim, the path sidesteps the town center along the Inner Relief Road, connecting to the R160, R158, and R161. From Trim, the R154 proceeds northward to meet the N51 at Athboy.