How much distance can I safely add?

[Susie]

Is there a reason you don't want to do C25k? It's a really good way to keep your distance increases safe and in check. I'd at least use it as a guideline.

[jene]

I think the rule of thumb is not to increase your distance by more than 10% each week. I'm not sure where I heard that

[juliabug]

I've heard 10% per week also.