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 396 miles  
636 km [ from Lassen Peak ]
Mount Shasta 14162 ft   (4317 m) California 41.4° N 122.2° W 332 miles 534 km [ from Mount Shasta ]
Medicine Lake Volcano 7913 ft   (2412 m) California 41.6° N 121.6° W 319 miles 514 km [ from Medicine Lake Volcano ]
Mount McLoughlin 9495 ft   (2894 m) Oregon 42.4° N 122.3° W 263 miles 423 km [ from Mount McLoughlin ]
Pelican Butte 8036 ft   (2449 m) Oregon 42.5° N 122.1° W 256 miles 412 km [ from Pelican Butte ]
Crater Lake 8926 ft   (2721 m) Oregon 42.9° N 122.1° W 228 miles 367 km [ from Crater Lake ]
Mount Bailey 8368 ft   (2551 m) Oregon 43.2° N 122.2° W 207 miles 334 km [ from Mount Bailey ]
Mount Thielsen 9182 ft   (2799 m) Oregon 43.2° N 122.1° W 207 miles 334 km [ from Mount Thielsen ]
Diamond Peak 8744 ft   (2665 m) Oregon 43.5° N 122.2° W 187 miles 300 km [ from Diamond Peak ]
Newberry Volcano 7985 ft   (2434 m) Oregon 43.7° N 121.3° W 178 miles 287 km [ from Newberry Volcano ]
Mount Bachelor 9065 ft   (2763 m) Oregon 44.0° N 121.7° W 154 miles 248 km [ from Mount Bachelor ]
Broken Top 9175 ft   (2797 m) Oregon 44.1° N 121.7° W 147 miles 237 km [ from Broken Top ]
Three Sisters 10358 ft   (3158 m) Oregon 44.1° N 121.8° W 146 miles 236 km [ from Three Sisters ]
Mount Washington 7794 ft   (2376 m) Oregon 44.3° N 121.8° W 133 miles 214 km [ from Mount Washington ]
Three Fingered Jack 7841 ft   (2390 m) Oregon 44.5° N 121.8° W 119 miles 192 km [ from Three Fingered Jack ]
Mount Jefferson 10497 ft   (3199 m) Oregon 44.7° N 121.8° W 105 miles 170 km [ from Mount Jefferson ]
Mount Hood 11239 ft   (3426 m) Oregon 45.4° N 121.7° W 60 miles 97 km [ from Mount Hood ]
Mount Saint Helens 8365 ft   (2550 m) Washington 46.2° N 122.2° W 0 miles 0 km [ from Mount Saint Helens ]
Mount Adams 12276 ft   (3742 m) Washington 46.2° N 121.5° W 33 miles 54 km [ from Mount Adams ]
Goat Rocks 8184 ft   (2494 m) Washington 46.5° N 121.5° W 39 miles 63 km [ from Goat Rocks ]
Mount Rainier 14411 ft   (4392 m) Washington 46.9° N 121.8° W 52 miles 84 km [ from Mount Rainier ]
Glacier Peak 10541 ft   (3213 m) Washington 48.1° N 121.1° W 141 miles 227 km [ from Glacier Peak ]
Mount Baker 10781 ft   (3286 m) Washington 48.8° N 121.8° W 181 miles 291 km [ from Mount Baker ]
Mount Garibaldi 8787 ft   (2678 m) British Columbia 49.8° N 123.0° W 252 miles 405 km [ from Mount Garibaldi ]
Mount Cayley 7854 ft   (2394 m) British Columbia 50.1° N 123.3° W 274 miles 441 km [ from Mount Cayley ]
Mount Meager 8790 ft   (2679 m) British Columbia 50.6° N 123.6° W 311 miles 500 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