To track, one or more creatures must succeed on a Wisdom (Survival) check. You might require trackers to make a new check in any of the following circumstances:

• They stop tracking and resume after finishing a short or long rest.

• The trail crosses an obstacle, such as a river, that shows no tracks.

• The weather conditions or terrain changes in a way that makes tracking harder.

The DC for the check depends on how well the ground shows signs of a creature’s passage. No roll is necessary in situations where the tracks are obvious.