I do not have a cycling computer. Using google pedometer and my watch results in these times.

Short distance (only on lazy days. Mostly bus and a little bike): 3 mile each way. 20-15 min
Average distace (most days. half bus half bike): 18 miles each way. 1 hr
Long form: 35 miles each way (when I feel up to it. all bike). 2.5 hrs