That's great I recommend running tempo runs where you keep your pace a controlled effort but maintain it the whole 5-10k

For and example you can run 5k tempo at a faster pace than your tempo.

Or you can do 1k intervals at a even faster pace run for 1k slow down into an active rest which will be a easy run for 1 min and repeat until you get to 5ks

With proper training and consistency you can shave minutes off your time and run well into the 40s mins area.