Westberg Trail is only 4 miles RT, 1710 ft gain. Near Ellensburg. No zigzag, straight up. Took me ~1:15 hrs. More than one trails. Flowers are coming (lupine, brodiaea, balsamroot, phlox, paintbrush and many more). Stopped by Ellensburg (a nice downtown of just 2x2 blocks), checked out the campus of Central Washington Univ (quiet and nice), before heading back.
Direction: I-90 exit 101, south on Thorp Highway for 2 miles. Right on Cove Road for ~4.5 miles (right after the 2nd stop sign: Manastash Rd). Parking area on the right before the road ends.