Abstract: A computer implemented method in a data processing system comprising a processor and a memory, comprising instructions which are executed by the processor to cause the processor to implement a meal plan optimization for hiking or trekking trips, comprising: receiving a request to generate a meal plan for an individual in a specific trek, said individual identified by at least one of: allergenic tolerances, fitness level, weight, dietary choices, age; said specific trek or hike is identified by at least one of: number of days, level of activity, expected weather; said method calculates the expected number of calories and nutritional contents needed for individual based on all known data; said method calculates a selected meal plan, including varieties, for the individual, and presents said plan to the individual.