WayfarrowRound Island Passage Light
Lighthouse · Mackinac County, Michigan
Round Island Passage Light is a lighthouse in Mackinac County, Michigan. Michigan has 124 lighthouses on record at Wayfarrow, 8 of them in Mackinac County.
Its light sits 72 feet above the water; the light characteristic is recorded as Fl R 4s (a red flash every 4 seconds), with a range of about 14 nautical miles; it guards Lake Huron; the structure is built of reinforced concrete.
Status check, 2026-11: Construction started in 1947 and finished in 1948, so the year depends on which date you use. Tower height is listed as 59 ft (18 m) in one source and 60 ft in another. It replaced the 1895 Round Island Light and was automated in 1973. Round Island Passage Light is listed on the National Register of Historic Places. It stands at 45.8433° N, 84.6150° W.
Key facts
| Focal height | 72 ft |
|---|---|
| Light characteristic | Fl R 4s |
| Range | 14 nautical miles |
| Body of water | Lake Huron |
| Material | reinforced concrete |
| Heritage designation | National Register of Historic Places listed place |
| National Register | Listed |
| Coordinates | 45.84330, -84.61500 |
Nearby places
- Round Island Lightlighthouse · Mackinac County · 0.4 mi
- Wawatam Lighthouselighthouse · Mackinac County · 5.1 mi
- Old Mackinac Point Lightlighthouse · Cheboygan County · 6.7 mi
- Mackinaw Heightsghost town · Cheboygan County · 7.2 mi
- McGulpin Point Lightlighthouse · Emmet County · 8.5 mi
- Bois Blanc Lightlighthouse · Mackinac County · 9.6 mi
- St. Helena Island Lightlighthouse · Mackinac County · 12 mi
- Fourteen Foot Shoal Lightlighthouse · Cheboygan County · 14.3 mi
- Cheboygan Crib Lightlighthouse · Cheboygan County · 14.8 mi
- Poe Reef Lightlighthouse · Cheboygan County · 16 mi
- Sturgeon Bayghost town · Emmet County · 20.9 mi
- Martin Reef Light Stationlighthouse · Mackinac County · 23 mi
Questions
Where is Round Island Passage Light?
Round Island Passage Light is in Mackinac County, Michigan, at 45.8433, -84.6150.
How many lighthouses are in Mackinac County?
Mackinac County, Michigan has 8 lighthouses on record at Wayfarrow.
- Wayfarrow status check (web sources) — Checked for current status (facts)
- Wayfarrow status check (web sources) — Checked for current status (facts)
- Wayfarrow status check (web sources) — Checked for current status (facts)
- Wikidata — Wikidata item (CC0)
- National Register of Historic Places — National Register of Historic Places record (public-domain)
- Wikidata — Wikipedia article (linked as a source; text not used) (CC0)
Facts marked "approximately" carry an uncertain date in the source. Text on this page is generated from the sources above; no encyclopedia prose is copied. Last updated 2026-11-05.