Activities

If you aren't forced marching, each party member can do an activity. If you are stationary, this check is made with advantage. If you're trained in both skills, pick one and add the PB of the other

Scout (in terrain) - perception or nature

• DC12: no chance of getting lost
• DC16: no chance of being detected 
• DC20: +10km speed

Forage - survival or nature

• DC12: one ration card and drinking water
• DC16: two ration cards
• DC20: four ration cards

Keep watch - insight or perception 

DC12: can't get surprised by nightly attacks  DC16: escape option: take a DC10 Con save or exhaustion instead of combat DC20: get surprise round on attackers