“Don't run through it. Four days of calf soreness that hurts on every step down stairs is your body telling you the tissue is still overloaded, and a 10K base doesn't disappear in a week or two. I'd swap running for low-impact work now, then test a short easy run in 3–4 days; if the first mile doesn't warm out, shut it down.”

“Four days of calf soreness that hurts on every step down the stairs is your body telling you the tissue is still healing, not a fitness problem you can outrun. I would skip the run for now, swap in cycling or swimming for a few days, and test a very easy jog only when walking downstairs is pain-free.”

“Four days of calf soreness after a hard trail run is your body saying the muscle fibers still have micro-tears, and running through it can easily turn a recovery issue into a real injury. I would swap runs for cycling, swimming, or easy walking for the next few days, keep the heart rate low, and only test a very easy jog once stairs no longer hurt.”

“Wait it out, but don't go to zero. I tell my runners I'd rather pull back for a few days now than watch a sore calf turn into something that costs the whole season. Swap a run or two for bike or pool work, keep the load off the calf, and if stairs still hurt next week, get it checked before race day.”

“Four days of calf soreness that still hurts on stairs is not normal training fatigue; it is your body telling you something is not right, and running through it risks turning a small strain into a race-ending injury. Two weeks is enough time to heal and still show up fit if you cross-train smart and ease back in only when walking and light hopping are pain-free.”

“Wait it out, but don't stop moving entirely. Four days of calf soreness that hurts on stairs is your body saying the tissue is still pissed, and running through it can turn a two-week problem into a six-week one.”

“Four days of calf pain with stairs still hurting is your body telling you something, and I have learned the hard way that ignoring that signal just buys a longer layoff.”

“I would wait it out. I had a foot tweak before CIF and backed off rather than mess up my season, because running through calf pain for four days usually turns a two-week problem into a two-month one. Two weeks is enough time to recover and still have a sharp race if you swap runs for pool or bike work now.”