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Thorne Hills Golf Course is an 18-hole semi-private course in Carleton, Michigan.

Designed by Dan Thorne. It plays 5,827 yards from the Blue tees, rated 67.4/114 (checked 2026-08-14).

Create a free account to save Thorne Hills Golf Course to My Game, where every course you save is measured against the rest of its state on the figures it publishes.
18
holes
81
par
5,827
yards (tips)
114
slope (blue)
The shape of the round · Blue teespublished figures only
HOLE ORDER — BLUE TEES628346285480161136306301274152535455565758595105114124135143153164174184PAROUT 0 YDSIN 2,917 YDSFIRST NINESECOND NINE
The published card in playing order, 18 holes with the two nines split — hole number under each bar, its par below that.

The course

designer
Dan Thorne reported
access
semi-private
address
12915 Sumpter Road, Carleton, MI
elevation
637 ft derived
opened
1969

42.06149, -83.48268 — open on OpenStreetMap →

The course, from above

OpenStreetMap has this course's outline but has not traced any of its 18 holes. The shaded area is the property; no hole, green or tee is drawn.

The outline of Thorne Hills Golf Course as OpenStreetMap holds it, drawn over NAIP 2022 aerial imagery. No hole, green or tee has been traced inside it.

Use arrow keys to pan, plus and minus to zoom. Tab reaches the map controls.

The outline of Thorne Hills Golf Course as OpenStreetMap holds it, drawn over NAIP 2022 aerial imagery. No hole, green or tee has been traced inside it. The map itself needs JavaScript; the outline is a plain GeoJSON file either way.

Imported from OpenStreetMap, edges unchecked · USDA NAIP 2022-07-30

The outline is the whole of the traced geometry here, so there is no hole or green to jump to and nothing to measure a yardage against.

Tees & ratings

Ratingsopen datachecked 2026-08-14

All 3 tee sets par, yardage, course rating, slope — the full table

Sorted by Yards, descending. 3 rows.

BlueM72contested81582767.4114
WhiteM72contested81520566.8110
RedF72contested81452465.3108

Every figure as published except Card par (derived), which is summed from the card below and shown only where a published figure is contested; a blank cell elsewhere is one nobody publishes.

The Blue, White and Red tees publish a par the scorecard below does not add up to. Both figures are published and nothing we hold settles which one a round plays to, so the Par column keeps the published figure, marked contested, and each tee's own par row from the card below is summed beside it, marked derived.

Scorecard — every published tee

Scorecardopen datachecked 2026-08-14

Hole 123456789101112131415161718 Total
Par 555555555544533444 81
Blue 628346285480161136306301274 5,827
White 57930527142013384253257256 5,205
Red 51824022435310076208192207 4,524
Handicap 412182810146165131391115717

The Studio

The Studio can't plan Thorne Hills Golf Course hole by hole yet.

We hold its scorecard, but nobody has traced its holes: the bunkers, water and fairway edges a plan aims around.

It plans 4,579 courses hole by hole today, and it charts your bag anywhere.

  • The approach, planned A Studio approach map on the aerial photo: a lob wedge aimed at the island green, its spread drawn as a dashed ring over the water, and the side it most often misses. Example from another course: hole 15, Resort tee, Stadium Course at TPC Scottsdale
  • The green, from LiDAR A Studio green view on the aerial photo: arrows for the slope a LiDAR survey measured, the area a cup could be cut, and the safer side to miss. Example from another course: hole 15, Stadium Course at TPC Scottsdale
  • Every shot, tee to green A Studio plan on the aerial photo of a desert par 4: the driver off the tee and a 7-iron into the green between the bunkers, each shot with its landing spread drawn as a dashed ring. Example from another course: hole 2, Resort tee, Stadium Course at TPC Scottsdale

See the courses it plans Open the Studio

Pictures: Studio output for a sample golfer, drawn 2026-10-15. The Studio needs a free account. AI can make mistakes.

© OpenStreetMap contributors

Book a tee time

Rates change by day and by season, so we send you to Thorne Hills Golf Course's own booking page rather than quoting a figure that was true the week we captured it.

Check tee times and rates

Also bookable nearby: Carleton Glen Golf Club (5.5 mi) · Sandy Creek Golf Course (6.2 mi) · Green Meadows Golf Course (9.9 mi) · Wesburn Golf Club (11 mi)

Measured against comparable courses

How hard and how long this course plays against comparable courses — never how good it is.

FigureThis courseIn MichiganNationwideAmong its peers
Longest5,827 yds=442nd of 592=8,699th of 12,02511th of 13 in the Monroe, MI metro area · 1,406th of 2,030 semi-private courses · =4,671st of 7,004 courses you can book · =8,619th of 9,017 18-hole regulation courses
Toughest testslope 114=370th of 410=7,510th of 8,710=140th of 158 in the Detroit-Warren-Ann Arbor, MI combined area · =1,203rd of 1,395 semi-private courses · =4,062nd of 4,936 courses you can book · =6,805th of 7,089 18-hole regulation courses
Hardest from the tipsrating 67.4352nd of 371=7,097th of 7,615136th of 145 in the Detroit-Warren-Ann Arbor, MI combined area · =1,071st of 1,141 semi-private courses · =3,801st of 4,145 courses you can book · =6,887th of 7,034 18-hole regulation courses
Widest tee spread1,303 yds between tees=339th of 565=6,728th of 11,5238th of 13 in the Monroe, MI metro area · 1,103rd of 1,970 semi-private courses · 3,600th of 6,653 courses you can book · =6,609th of 8,962 18-hole regulation courses
Oldestopened 1969=227th of 475=4,312th of 9,368=93rd of 171 in the Detroit-Warren-Ann Arbor, MI combined area · =732nd of 1,516 semi-private courses · =2,246th of 5,526 courses you can book · =3,048th of 7,001 18-hole regulation courses
Highest above sea level637 ft derived 518th of 644=6,273rd of 12,4376th of 15 in the Monroe, MI metro area · =1,035th of 2,089 semi-private courses · =4,069th of 7,274 courses you can book · =4,461st of 9,106 18-hole regulation courses

A published figure is compared only against the courses that publish it too, which is why the totals differ from row to row — a state's length field is the courses with a scorecard, not the courses in the state. Height above sea level is the exception: we derive it from a coordinate, so its field is very nearly every course we render. Ties share an ordinal and are marked =. How this is computed →

What's on this page

In progress2 of 6 built

2 of 6 parts of this course page are built, and we're filling in the rest.

  • Scorecard, built.Par and yardage for every hole, from 3 sets of tees.
  • Course rating and slope, built.Rated from 3 sets of tees.
  • Course map, partly built.The course's outline is drawn, but none of its 18 holes has been traced in OpenStreetMap yet.
  • Per-hole distances, not built yet.The holes aren't traced yet, so there are no measured carries or distances to the green.
  • Green contours, not built yet.We haven't built the green contours for this course yet.
  • Course details, partly built.5 of 7 background details — we don't hold a phone number and the grass on the greens.

The site is in beta and the database is still being built, so expect gaps. Know something we don't? Help us fill it in — a link to where it's published is worth more than anything else you could send.

Sources

Gathered from the course's own site and public records — every figure on this page is traceable to who published it and when. Spot an error or a gap? Tell us.

Location and identity seeded from OpenStreetMap — © OpenStreetMap contributors, ODbL. Last checked 2026-08-14. Where each figure came from is stated beside it, above.

Compare this course →

Or go straight to a comparison: vs Carleton Glen Golf Club · vs Sandy Creek Golf Course · vs Green Meadows Golf Course

Nearby courses

Carleton Glen Golf Club

5.5 mi · Ash Township · public · 18 holes

Sandy Creek Golf Course

6.2 mi · Monroe · public · 18 holes

Green Meadows Golf Course

9.9 mi · Monroe · public · 18 holes

Monroe Golf & Country Club

9.9 mi · Frenchtown Charter Township · 18 holes

Carrington Golf Club

10.0 mi · Monroe Charter Township · 18 holes

Wesburn Golf Club

11 mi · South Rockwood · public · 18 holes

Woodside Meadows Golf Course

11 mi · Romulus · public · 19 holes

Big Al's Greens & Grille

11 mi · Newport · 18 holes

Straight-line distance from this course's coordinates, within 60 miles — not driving distance, and it crosses state lines where the nearest courses are over one.

Know something about this course? 10 fields we don't hold — or tell us something here is wrong