Know whether there is time for one more run

Plan the full round trip

Count the task, the return journey, and a deliberate buffer. Inventory management, terrain, combat, or a missed route can consume the margin quickly. If the result is close to zero, return instead of treating the estimate as a promise.

Use the post-event window for prepared routes

Stage tools, food, and storage before sheltering. When the event passes, run a route with a known return time rather than improvising a long trip while the next cycle advances.