Cow Stream Natural Hot Springs is a natural hot pool reached from the St James Cycle Trail, near Hanmer Springs in Hurunui. It has a Google rating of 4.0 from 16 reviews. The pools are just off the cycleway track.
Natural hot pools are usually simple, with a dip in warm water, so bring a towel, water and something to change into. Hot water can make you light-headed if you stay in too long, so take breaks and keep an eye on children. Pools reached on foot or by bike are often quieter early in the morning and on weekdays. Regulars tend to check the path conditions before setting out.
For a warm soak after a ride on the St James Cycle Trail, this natural pool near Hanmer Springs is worth a stop.