Three Mile Bay and Four Mile Bay are two of Lake Taupō’s designated swim-only areas, located south-east of the town centre along the lakefront. The bays are protected from all vessel traffic — no boats, jet skis or watercraft of any kind may enter — making them among the safest swimming environments on the lake. The Rotary Across the Lake Swim, one of the Southern Hemisphere’s largest open-water swimming events, uses Three Mile Bay as its finish point.
Practical Information
| Location | South-east of Taupō town centre, off Lake Terrace — approximately 3 and 4 km from town |
| Entry | Free, open all hours |
| Swim-only status | Both bays designated swim-only under the Department of Internal Affairs Lake Taupō bylaws |
| Markers | Black and white banded posts ashore; black and white buoys in the water |
| Lifeguards | Not present — unsupervised swimming |
| Dogs | Not permitted in the swim-only zone |
| Access | Lions Walk (Great Lake Walkway) passes both bays; road access via Lake Terrace |
The Swim-Only Designation
Lake Taupō has seven designated swim-only bays, established under bylaws administered by the Department of Internal Affairs (DIA). The designation prohibits all vessels from entering the marked area. Boundaries are defined by black and white banded posts on shore and corresponding buoys in the water. The Taupō Harbourmaster monitors compliance.
Three Mile Bay and Four Mile Bay sit side by side along the south-eastern lakefront and together form a continuous protected swimming area. The water is clear and fresh, consistent with Lake Taupō’s general water quality, which is monitored seasonally by the Waikato Regional Council.
The Across the Lake Swim
Three Mile Bay is the finish point for the Rotary Across the Lake Swim, an annual open-water swimming event that crosses from Acacia Bay on the lake’s western shore to the town-side beaches. The event typically includes a full lake crossing of around 3.8 km and a shorter 1 km course along the shoreline near Three Mile Bay. It is one of the largest freshwater open-water swim events in New Zealand.
Getting There
The bays are accessible on foot or by bike via the Lions Walk (Great Lake Walkway), which runs along the lake shore south-east from the Taupō town waterfront. By car, Lake Terrace provides road access to the bays, with parking areas along the route. Wharewaka Point Reserve — with BBQ facilities and toilets — is also along this stretch of the waterfront.
Where to Learn More
Rotary Across the Lake Swim — official site for the annual open-water event that finishes at Three Mile Bay.
LAWA – Lake Taupō at 2 Mile Bay — seasonal water quality monitoring data for this section of the lake.
Frequently Asked Questions
Why are Three and Four Mile Bays swim-only?
They are designated swim-only areas under DIA bylaws, which prohibit all vessels from the marked zones. This protects swimmers from boat traffic, which is busy on Lake Taupō.
How are the swim-only boundaries marked?
Black and white banded posts are installed on shore, with matching black and white buoys in the water. All vessels must remain clear of these markers.
Are there lifeguards at Three and Four Mile Bays?
No. Swimming is unsupervised. Visitors should assess conditions themselves and swim within their abilities.
Can I take my dog to the swim-only bays?
Dogs are not permitted within the designated swim-only zones on Lake Taupō.
Is the Across the Lake Swim open to the public?
Yes — the Rotary Across the Lake Swim is an annual public event with entries available. Check acrossthelakeswim.co.nz for event dates and entry details.
Three and Four Mile Bays are part of the broader Swimming in Taupō network of lakefront swim spots. The Lake Taupō Swimming Spots guide covers all seven designated swim-only bays and other free swimming areas around the lake.