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 249 miles  
401 km [ from Lassen Peak ]
Mount Shasta 14162 ft   (4317 m) California 41.4° N 122.2° W 188 miles 303 km [ from Mount Shasta ]
Medicine Lake Volcano 7913 ft   (2412 m) California 41.6° N 121.6° W 173 miles 278 km [ from Medicine Lake Volcano ]
Mount McLoughlin 9495 ft   (2894 m) Oregon 42.4° N 122.3° W 121 miles 195 km [ from Mount McLoughlin ]
Pelican Butte 8036 ft   (2449 m) Oregon 42.5° N 122.1° W 112 miles 181 km [ from Pelican Butte ]
Crater Lake 8926 ft   (2721 m) Oregon 42.9° N 122.1° W 85 miles 137 km [ from Crater Lake ]
Mount Bailey 8368 ft   (2551 m) Oregon 43.2° N 122.2° W 67 miles 108 km [ from Mount Bailey ]
Mount Thielsen 9182 ft   (2799 m) Oregon 43.2° N 122.1° W 65 miles 105 km [ from Mount Thielsen ]
Diamond Peak 8744 ft   (2665 m) Oregon 43.5° N 122.2° W 48 miles 78 km [ from Diamond Peak ]
Newberry Volcano 7985 ft   (2434 m) Oregon 43.7° N 121.3° W 34 miles 55 km [ from Newberry Volcano ]
Mount Bachelor 9065 ft   (2763 m) Oregon 44.0° N 121.7° W 7 miles 11 km [ from Mount Bachelor ]
Broken Top 9175 ft   (2797 m) Oregon 44.1° N 121.7° W 0 miles 0 km [ from Broken Top ]
Three Sisters 10358 ft   (3158 m) Oregon 44.1° N 121.8° W 5 miles 8 km [ from Three Sisters ]
Mount Washington 7794 ft   (2376 m) Oregon 44.3° N 121.8° W 15 miles 24 km [ from Mount Washington ]
Three Fingered Jack 7841 ft   (2390 m) Oregon 44.5° N 121.8° W 28 miles 45 km [ from Three Fingered Jack ]
Mount Jefferson 10497 ft   (3199 m) Oregon 44.7° N 121.8° W 42 miles 67 km [ from Mount Jefferson ]
Mount Hood 11239 ft   (3426 m) Oregon 45.4° N 121.7° W 90 miles 145 km [ from Mount Hood ]
Mount Saint Helens 8365 ft   (2550 m) Washington 46.2° N 122.2° W 147 miles 237 km [ from Mount Saint Helens ]
Mount Adams 12276 ft   (3742 m) Washington 46.2° N 121.5° W 145 miles 234 km [ from Mount Adams ]
Goat Rocks 8184 ft   (2494 m) Washington 46.5° N 121.5° W 166 miles 267 km [ from Goat Rocks ]
Mount Rainier 14411 ft   (4392 m) Washington 46.9° N 121.8° W 194 miles 311 km [ from Mount Rainier ]
Glacier Peak 10541 ft   (3213 m) Washington 48.1° N 121.1° W 278 miles 447 km [ from Glacier Peak ]
Mount Baker 10781 ft   (3286 m) Washington 48.8° N 121.8° W 325 miles 523 km [ from Mount Baker ]
Mount Garibaldi 8787 ft   (2678 m) British Columbia 49.8° N 123.0° W 399 miles 641 km [ from Mount Garibaldi ]
Mount Cayley 7854 ft   (2394 m) British Columbia 50.1° N 123.3° W 421 miles 678 km [ from Mount Cayley ]
Mount Meager 8790 ft   (2679 m) British Columbia 50.6° N 123.6° W 458 miles 737 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