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Lions Lair Spur Trail Running is a 4.1 mile trail in Boulder, Colorado with moderate difficulty. The gradual incline makes it ideal for a workout. The summit rewards with great views of Boulder from the summit of Mount Sanitas.
Lions Lair Spur Trail Running is a 4.1 mile trail in Boulder, Colorado with moderate difficulty. The gradual incline makes it ideal for a workout. The summit rewards with great views of Boulder from the summit of Mount Sanitas.
