Running in a dream often carries urgency without a clear finish line -- effort that isn't translating into progress, or a sense that you're working hard just to keep pace with something. It can reflect a real situation where you feel like you're putting in energy without seeing the results you expected.
The Moon hath great power in all questions, except when Leo, Capricorn, or Sagittarius ascend: for either of those signs abate of her significations; chiefly Leo or Aquarius. - William Lilly (1602.-1681.)