Method: Clean | Average | Optimistic Winter Ascent Dates only (Help)Count a peak only once per dayShow List using Metric Units

Ontario County High Points - Multiple Ascents Grid

RankGeographyPeak Elev-Ft  Prom-Ft TotalRound 1
1.Sudbury DistrictIshpatina Ridge22741293  
2.Thunder BayTower Mountain2228653  
3.TimiskamingIshpatina Ridge North2221581  
4.AlgomaOgidaki Mountain2182932  
5.NipissingSouthern Ontario High Point18961204  
6.HaliburtonManitou Mountain1847184  
7.KenoraKenora District High Point1834299  
8.Rainy RiverRainy River District High Point1785348  
8.GreyGrey County High Point1785128  
8.SimcoeNiagara Escarpment High Point1785889  
11.MuskokaMuskoka High Point1778302  
11.HastingsHastings County High Point1778371  
11.DufferinDufferin County High Point177869  
14.Parry SoundParry Sound High Point1745246  
15.RenfrewRyans Mountain1716715  
16.WellingtonLuther Benchmark1677   
17.Sudbury CityWolf Lake Mountain1654591  
18.Lennox and AddingtonMoger Pond Peak1644118  
19.PeelPeel High Point1621256  
20.CochraneGhost Range Peak1601620  
21.WaterlooWaterloo High Point1437135  
22.PeterboroughPeterborough County High Point1424161  
23.PerthPerth County High Point1401203  
24.FrontenacEvergreen Mountain1368476  
25.HaltonHalton High Point1358   
26.DurhamDurham High Point1345436  
27.BruceBruce County High Point1322   
28.HuronHuron County High Point1302   
28.Kawartha LakesKawartha Lakes High Point1302282  
30.OxfordOxford County High Point1283174  
31.LanarkWhite Mountain1266138  
32.YorkYork High Point1243171  
33.NorthumberlandNorthumberland County High Point1168203  
34.ManitoulinCup and Saucer1155576  
35.MiddlesexMiddlesex County High Point1122   
36.HamiltonHamilton High Point1083121  
37.BrantBrant County High Point1073   
38.ElginElgin County High Point971   
39.NorfolkNorfolk County High Point912   
40.BrantfordBrantford High Point876   
41.LambtonLambton County High Point866   
42.NiagaraNiagara High Point850246  
43.Chatham-KentChatham-Kent High Point764   
44.HaldimandHaldimand County High Point758   
45.EssexEssex County High Point748   
46.TorontoToronto High Point6967  
46.Leeds and GrenvilleLeeds and Grenville High Point696   
48.OttawaOttawa High Point545105  
49.Prince EdwardEast Picton Bay Hill509269  
50.Stormont, Dundas and GlengarryStormont-Dundas-Glengarry High Point410164  
51.Prescott and RussellVankleek Hill404177  

Main Peak List: Click here to see the standard peak listing, showning more informational columns and just the first ascent date.

Front Runners List: Click here to see list completion progress by climbers that log their climbs using

Compare Climbers: Click here to compare ascents of up to 5 climbers working on this list.

About the Multiple Ascent Grid:

  • This table grid shows all peaks on a given list, and all ascents done by Matt Varney, up to 10 ascents per peak.
  • While many peakbaggers do not like to repeat ascents, some will try to do multiple "laps" or "rounds" of a favorite list, often one close to home.
  • The header for each ascent column shows, in parentheses, the total number of peaks climbed in each "round", and clicking the header link will sort your ascents for that round.
  • Due to space limitations, this listing has just the basic peak info, so up to ten date columns can be shown. Please use the main peak list (linked above) for more basic info and functionality.
  • Some climbers will log two ascents of the same peak on the same day--for example, when doing an out-and-back ridge run with other ascents sandwiched between two of the same peak. Some might not consider these to be two separate ascents for the purposes of doing multiple rounds. Clicking on the "Count a peak only once per day" link in the header will collapse multiple ascents of a peak on a single day into just one ascent for this grid list.

List Description

Ontario is administratively divided into 51 units that are a mixture of counties, unified counties, regional municipalities, districts, cities, and municipalities. Most of them were historically counties at one point, and despite changes in name or status, the boundaries have remained mostly stable over the years.

These units also correspond to the Canadian Census Divisions for the most part. Since the last revision of Census Divisions in 2001, the combined county of Haldimand-Norfolk split into Haldimand County and Norfolk County, and the City of Brantford separated from Brant County. That is why there are 51 entiries on this list, while the Census lists only 49 Divisions.


The main source for the Ontario county high point list was the excellent Ontario Basic Mapping database system created by the provincial government, which is a huge improvement over the old NTS 1:50,000 map sheets. To help generate this list, all the spot elevations (over 500,000 of them) in the OBM data were downloaded, matched to their county by a point-in-polygon operation, and the highest spot elevations picked out. Sometimes there was a swarm of spot elevations of the same height in the same general location, and one represenative point was picked. In other cases, separate areas were logged (see, for example, Chatham-Kent). Also, some OBM spot elevations were clearly erroneous outliers and had to be discarded. In general, though, a 1-meter difference in spot elevations was considered significant, and these lower points were not considered high-point candidates.

Once a set of county high points was generated, they were cross-checked with the 1:50,000 NTS maps, and some were adjusted a little bit based on information there. The result should be a reasonably accurate guide to the highest ground in the counties. Before tackling any county, though, be sure to check the OBM and NTS maps yourself to familiarlize yourself with the area. You may have to check out several nearby areas to be sure of locating the highest piece of earth, an occupational hazard of highpointers in relatively flat terrain like Ontario.


     Ontario Basic Mapping


Map Showing Location of Peaks

 = Peaks climbed by Matt Varney   = Unclimbed peaks

Click on a peak to see its name and a clickable link.

(Map only shows peaks ranked by clean prominence)

Click Here for a Full Screen Map

This page has been served 615157 times since 2004-11-01.

Copyright © 1987-2020 by All Rights Reserved. Questions/Comments/Corrections? See the Contact Page Terms of Service