tkellyvt1:
I am not a doctor, but I am an avid exercise enthusiast and I read and study exercise physiology. When I trained smart, I avoided injury for years and could compete at a pretty high level.
25 miles a week is a lot of running. Over how many days is this spread? What kind of intervals do you do, with how much active rest ?
The constant soreness and fatigue certainly sounds a lot like over training. From any one very hard workout, you could go a week of only light short runs before you fully recover. If you never give your body a chance to fully recover, you are damaging it more before it is fully healed.
I suggest you take a week off running. Do some walking, bicycling, or other light activity. If you feel only somewhat better, take a few more days off, then light activity every other day.
The strength training may also be a source of the problem if you try to progress too fast in your strength gains while you are running. A safe weight increase is about 5% every three weeks. That may sound like too little, too infrequently. Do the Math. With this progression pattern, you will double your strength safely in one year, and again the next, a quadrupling of your strength, safely without injury.
Lift to gain, not strain. Strain typically precedes injury, which I highly doubt is the reason you train.
Again, a week or two off should allow everything to heal, leaving you feeling fast, fit and strong. Rest is an important component of training.
Smart training is not hard training every day.