diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # spherical
 
+## 0.1.1.0
+
+  * Expose `distance` function
+
 ## 0.1.0.0
 
 Initial release
diff --git a/spherical.cabal b/spherical.cabal
--- a/spherical.cabal
+++ b/spherical.cabal
@@ -1,6 +1,6 @@
 cabal-version: 1.18
 name: spherical
-version: 0.1.0.0
+version: 0.1.1.0
 license: BSD3
 license-file: LICENSE
 copyright: Copyright: (c) 2018 Vanessa McHale
diff --git a/src/Math/Geometry/Spherical.hs b/src/Math/Geometry/Spherical.hs
--- a/src/Math/Geometry/Spherical.hs
+++ b/src/Math/Geometry/Spherical.hs
@@ -8,6 +8,7 @@
     , areaConvex
     , perimeterPolygon
     , areaPolygon
+    , distance
     -- * Projections
     , albers
     , littow