To plan nutritious meals for a multi-day hike, consider the following points: 1. Focus on energy-dense foods that provide balanced nutrition in compact packages. 2. Aim for a mix of complex carbohydrates, healthy fats, and lean protein sources. 3. Opt for non-perishable and lightweight options wherever possible, like dehydrated or freeze-dried meals. 4. Balance no-cook and cook-required meals to save time and energy. 5. Pack enough calories per day to sustain your energy expenditure during the hike - typically between 3,000-4,000 calories per day for most hikers. 6. Account for personal preferences, dietary restrictions, and variety to keep your meal plan enjoyable and satisfying.