All the advice regarding increasing distance talks about slowing down, however I find it quite difficult to regulate my pace when on my own.
During my C25K I just ran at a pace I felt comfortable running at which has got me to 5K and beyond. As we ran as a group my pace was not that much different to the others, some were a bit faster and some a bit slower but not by much. I can now run just over 8K on my own ( I have done 10K but as a fluke rather than the norm). If I stop and walk for even just a minute I can then carry on to the 10K.
When we run as a group with our two '10K girls' up in front setting the pace, I manage 10K surprisingly well. When we all set off, for the first few minutes I can feel that I am running a bit slower than normal but after that feel OK. When I try to run slower when I am on my own I either drift back to my normal pace or end up doing even less distance because I am running un-naturally and tire more.
It was suggested that I use a heart rate monitor and try to keep my HR rate within limits. I have tried two types from eBay and both went wrong within a week!! Neither really helped me either as one relied on watching my phone and the other (a watch type) buzzed at preset heart rates. The second was better but it either buzzed all the time or if I increased the limits even slightly, never buzzed at all.
I have seen phone apps that display your current running pace in either minutes per km or km/hr. Some apps seem to give audio ques at every km about pace etc. but I am looking for one that can combine the two. Either tell me the pace I am running at more frequently, or better still, if I run too fast or too slow after setting a desired pace, to tell me to speed up or slow down.
I hope there is an app out there, but from the descriptions of apps I have read, none describe that as a function (or not in words that I understood it to be). Ideally it would be a free app, or at least a free trial so that I can confirm it helps me before committing to purchasing it.