// Add all runs to its corresponding runner
    RUN *currentRunPos = head;
    while (currentRunPos != NULL) {
        int runnerFound = 0; // assume that the runner has not been found
        RUNNER *currentRunnerPos = headRunner;
        while (currentRunnerPos != NULL) {
            if (strcmp(currentRunPos->name,currentRunnerPos->name) == 0) {
                currentRunnerPos->distance += currentRunPos->distance;
                currentRunnerPos->duration += currentRunPos->duration;
                runnerFound = 1;
                break; // quit the while loop as the runner has been found
            }
            currentRunnerPos = currentRunnerPos->next;
        }
        // Create a new runner if the runner was not found and set his data
        if (!runnerFound) {
            RUNNER *newRunner = malloc(sizeof(RUNNER));
            newRunner->distance = currentRunPos->distance;
            newRunner->duration = currentRunPos->duration;
            strcpy(newRunner->name, currentRunPos->name);
            newRunner->next = headRunner;
            headRunner = newRunner;
        }
        currentRunPos=currentRunPos->next;
    }