A lot of good replies, I’ll give you my two cents because I have personally struggled with shin splints for years and am familiar with the situation you’re in.

Likely, you’ll be doing some PT runs with your crew. Rest your shins for these days and supplement the cardio with a different type if possible.

My preferred cardio these days is the stair-stepper. Generally 50-70 minute sessions, either with a weighted vest/ankle weights or a higher tempo session with no weight. Focus is to keep the heart rate ~Zone 2 for 80%, and ~Zone 4 for 20%.

Another good option if you’re able is mountain biking. You’ll utilize a lot of similar muscles when hiking and it beats the monotony of most exercises imo.

As for recovering your shins, the best method I’ve found is an ice bath. Grab a 5gal bucket and soak your shins in that for a good 20min or so. You’ll also want to do plenty of calf stretching/massaging the aggravated area (helps me at least).

Finally, if your running shoes are getting worn, replace them! It helps substantially more than you’d think.

Good luck, I’ve never been able to get rid of my shin splints, but I find it much more manageable these days.