Skiing the Cascade Volcanoes
        Amar Andalkar's Ski Mountaineering and Climbing Site
Ski Mountaineering Photos & Trip Reports Equipment & Info Cascade Volcanoes Ring of Fire Site Map

Table of Contents | Introduction | Ratings | WebCams | Bibliography | Highest Volcanoes | Snowfall & Snowdepth | Monthly Chart | Conifers | Compare | Distance | Sun Chart
Distance Calculator to the Cascade Volcanoes       (page created December 2003)



This page calculates the shortest-path (great circle) distance from any location on the globe to each of the Cascade volcanoes included in this guidebook.
It was written as a fun demonstration project while I learned to program in MySQL and PHP in order to implement a database back-end for this section.
Enter the latitude and longitude for any location to calculate the distances (remember to use negative values for west longitudes such as North America).
The default values are latitude = 47.64°, longitude = –122.34°, corresponding to my home in Seattle. You may select a city from the menu below, or use
the [from . . .] links to calculate the distance from any of these Cascade volcanoes to each of the others. See the bottom of the page for further notes.

Latitude:   Longitude:          


Volcano Name.   
Elevation   
State / Province   
Latitude 
Longitude   
Shortest Distance   
 
Lassen Peak 10457 ft   (3187 m) California 40.5° N 121.5° W 138 miles  
222 km [ from Lassen Peak ]
Mount Shasta 14162 ft   (4317 m) California 41.4° N 122.2° W 69 miles 112 km [ from Mount Shasta ]
Medicine Lake Volcano 7913 ft   (2412 m) California 41.6° N 121.6° W 66 miles 106 km [ from Medicine Lake Volcano ]
Mount McLoughlin 9495 ft   (2894 m) Oregon 42.4° N 122.3° W 0 miles 0 km [ from Mount McLoughlin ]
Pelican Butte 8036 ft   (2449 m) Oregon 42.5° N 122.1° W 12 miles 20 km [ from Pelican Butte ]
Crater Lake 8926 ft   (2721 m) Oregon 42.9° N 122.1° W 36 miles 58 km [ from Crater Lake ]
Mount Bailey 8368 ft   (2551 m) Oregon 43.2° N 122.2° W 56 miles 89 km [ from Mount Bailey ]
Mount Thielsen 9182 ft   (2799 m) Oregon 43.2° N 122.1° W 56 miles 90 km [ from Mount Thielsen ]
Diamond Peak 8744 ft   (2665 m) Oregon 43.5° N 122.2° W 76 miles 123 km [ from Diamond Peak ]
Newberry Volcano 7985 ft   (2434 m) Oregon 43.7° N 121.3° W 103 miles 166 km [ from Newberry Volcano ]
Mount Bachelor 9065 ft   (2763 m) Oregon 44.0° N 121.7° W 115 miles 184 km [ from Mount Bachelor ]
Broken Top 9175 ft   (2797 m) Oregon 44.1° N 121.7° W 121 miles 195 km [ from Broken Top ]
Three Sisters 10358 ft   (3158 m) Oregon 44.1° N 121.8° W 120 miles 193 km [ from Three Sisters ]
Mount Washington 7794 ft   (2376 m) Oregon 44.3° N 121.8° W 134 miles 215 km [ from Mount Washington ]
Three Fingered Jack 7841 ft   (2390 m) Oregon 44.5° N 121.8° W 147 miles 237 km [ from Three Fingered Jack ]
Mount Jefferson 10497 ft   (3199 m) Oregon 44.7° N 121.8° W 161 miles 259 km [ from Mount Jefferson ]
Mount Hood 11239 ft   (3426 m) Oregon 45.4° N 121.7° W 209 miles 337 km [ from Mount Hood ]
Mount Saint Helens 8365 ft   (2550 m) Washington 46.2° N 122.2° W 263 miles 423 km [ from Mount Saint Helens ]
Mount Adams 12276 ft   (3742 m) Washington 46.2° N 121.5° W 266 miles 427 km [ from Mount Adams ]
Goat Rocks 8184 ft   (2494 m) Washington 46.5° N 121.5° W 286 miles 460 km [ from Goat Rocks ]
Mount Rainier 14411 ft   (4392 m) Washington 46.9° N 121.8° W 312 miles 502 km [ from Mount Rainier ]
Glacier Peak 10541 ft   (3213 m) Washington 48.1° N 121.1° W 398 miles 641 km [ from Glacier Peak ]
Mount Baker 10781 ft   (3286 m) Washington 48.8° N 121.8° W 443 miles 713 km [ from Mount Baker ]
Mount Garibaldi 8787 ft   (2678 m) British Columbia 49.8° N 123.0° W 513 miles 825 km [ from Mount Garibaldi ]
Mount Cayley 7854 ft   (2394 m) British Columbia 50.1° N 123.3° W 534 miles 860 km [ from Mount Cayley ]
Mount Meager 8790 ft   (2679 m) British Columbia 50.6° N 123.6° W 570 miles 917 km [ from Mount Meager ]



Notes:
The calculated distances are only approximately accurate, for two main reasons. First, the latitudes/longitudes are only entered to 0.1° accuracy,
allowing errors of up to ±3.5 miles (since 0.1° of latitude is about 7 miles). This is not really a problem since these volcanoes and the listed cities
are generally several miles across anyway. Second, the calculations assume a spherical Earth with a diameter of 7920 miles, while the real Earth
is closer to an oblate spheroid with an equatorial diameter of 7928 miles, polar diameter of 7902 miles, and mean diameter of about 7920 miles.
Thus for very large distances of thousands of miles, additional errors of up to about 0.2% (i.e. up to a few tens of miles) could also be introduced
depending on the direction of the shortest path. The simple spherical great-circle formula used here is:

    Distance = Radius * acos( cos(Lat1)*cos(Lat2)*cos((Long1-Long2)) + sin(Lat1)*sin(Lat2) )

I've also added a JavaScript-based calculator below which can determine the great circle distance between any two points on the globe.



Latitude 1:   Longitude 1:   (west longitudes and south latitudes are negative)
Latitude 2:   Longitude 2:

Distance: (miles)   (km)        


Table of Contents | Introduction | Ratings | WebCams | Bibliography | Highest Volcanoes | Snowfall & Snowdepth | Monthly Chart | Conifers | Compare | Distance | Sun Chart
Ski Mountaineering Photos & Trip Reports Equipment & Info Cascade Volcanoes Ring of Fire Site Map

Amar Andalkar   Seattle, WA, USA   <About the Author / Contact Me>
All material on this website is ©1997-2017 by Amar Andalkar unless otherwise noted.
PHP script last modified: Monday, April 25, 2005