How long you should try to farmers' walk depends on your current fitness level, personal goals, and the weight you’re carrying. Beginners should always start small, completing no more than 60 seconds or 100 feet at a time. Move slowly, listen to your body, and take breaks as needed. As you find yourself getting more comfortable with the weight and the form, increase the length of the timer or scale up to progressively heavier weights. For personalized advice, consult a certified personal trainer or qualified coach. They will observe your form firsthand and make recommendations specific to you.