Well done on that , maybe throw in some shorter , faster interval sessions like 12 x400m , just set in on your watch and use a local park or quiet road? I’ m not too bothered about my 5 km time but I know I lack speed , so at the end of my easy runs I’ve been throwing in 4 x 30 secs sprints with 4 mins rest between. It’s something I’ve never tried before but there’s a bit of research and training articles which recommend it so I’m giving it a go at least once per week.
Fartlek at threshold pace, change up route and pace to get out of the habit, find a fast course to boost confidence at speed and see what results @tr_efc