I'm a 2011 C25K graduate and have kept up the running since then, barring a few weeks off with calf strain in December. My friend and I have decided to sign up for a big 10K run in London in July and I'm excited but a bit nervous.
Any tips for going from 5K to 10K? My 5K time is currently approx 30mins, though that's been a bit slower since the injury and I'm trying to be careful about building up again, as I think it was caused by trying to add speed training to my routine when I wasn't quite ready and should have just focused on building strength. I don't want to end up injured again, but nor do I want to be the last straggler to finish

If anyone can recommend a training plan or just has tips on where to start with building up towards a 10K I'd be most grateful 