diff --git a/d3.geo.js b/d3.geo.js
index a7fb4cea..c7c021cf 100644
--- a/d3.geo.js
+++ b/d3.geo.js
@@ -627,7 +627,7 @@ d3.geo.greatCircle = function() {
       radius = 6371; // Mean radius of Earth, in km.
   // TODO: breakAtDateLine?
 
-  function greatCircle(d, i, dist) {
+  function greatCircle(d, i) {
     var from = source.call(this, d, i),
         to = target.call(this, d, i),
         x0 = from[0] * d3_radians,
@@ -638,15 +638,13 @@ d3.geo.greatCircle = function() {
         cy0 = Math.cos(y0), sy0 = Math.sin(y0),
         cx1 = Math.cos(x1), sx1 = Math.sin(x1),
         cy1 = Math.cos(y1), sy1 = Math.sin(y1),
-        d = dist || Math.acos(sy0 * sy1 + cy0 * cy1 * Math.cos(x1 - x0)),
+        d = Math.acos(sy0 * sy1 + cy0 * cy1 * Math.cos(x1 - x0)),
         sd = Math.sin(d),
         f = d / (n - 1),
         e = -f,
         path = [],
         i = -1;
 
-    if (d === 0) return [from];
-
     while (++i < n) {
       e += f;
       var A = Math.sin(d - e) / sd,
diff --git a/d3.geo.min.js b/d3.geo.min.js
index c7664e9c..ddfd17fa 100644
--- a/d3.geo.min.js
+++ b/d3.geo.min.js
@@ -1 +1 @@
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f=e[0],g=e[1];return(g>50?b:f<-140?c:g<21?d:a)(e)}var a=d3.geo.albers(),b=d3.geo.albers().origin([-160,60]).parallels([55,65]),c=d3.geo.albers().origin([-160,20]).parallels([8,18]),d=d3.geo.albers().origin([-60,10]).parallels([8,18]);e.scale=function(f){if(!arguments.length)return a.scale();a.scale(f),b.scale(f*.6),c.scale(f),d.scale(f*1.5);return e.translate(a.translate())},e.translate=function(f){if(!arguments.length)return a.translate();var g=a.scale()/1e3,h=f[0],i=f[1];a.translate(f),b.translate([h-400*g,i+170*g]),c.translate([h-190*g,i+200*g]),d.translate([h+580*g,i+430*g]);return e};return e.scale(a.scale())},d3.geo.mercator=function(){function d(d){var e=d[0]/360,f=-(Math.log(Math.tan(Math.PI/4+d[1]*a/2))/a)/360;return[b*e+c[0],b*Math.max(-0.5,Math.min(.5,f))+c[1]]}var b=500,c=[480,250];d.invert=function(d){var e=(d[0]-c[0])/b,f=(d[1]-c[1])/b;return[360*e,2*Math.atan(Math.exp(-360*f*a))/a-90]},d.scale=function(a){if(!arguments.length)return b;b=+a;return 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b=[],c=a.geometries,e=-1,f=c.length;while(++e<f)b.push(d(j,c[e]));return b.join("")}},k={FeatureCollection:function(a){var b=0,c=a.features,e=-1,f=c.length;while(++e<f)b+=d(k,c[e]);return b},Feature:function(a){return d(k,a.geometry)},Point:c,MultiPoint:c,LineString:c,MultiLineString:c,Polygon:function(a){return l(a.coordinates)},MultiPolygon:function(a){var b=0,c=a.coordinates,d=-1,e=c.length;while(++d<e)b+=l(c[d]);return b},GeometryCollection:function(a){var b=0,c=a.geometries,e=-1,f=c.length;while(++e<f)b+=d(k,c[e]);return b}},n={Feature:function(a){return d(n,a.geometry)},Polygon:function(a){var b=m(a.coordinates);return[b[0]/b[2],b[1]/b[2]]},MultiPolygon:function(a){var b=0,c=a.coordinates,d,e=0,f=0,g=0,h=-1,i=c.length;while(++h<i)d=m(c[h]),e+=d[0],f+=d[1],g+=d[2];return[e/g,f/g]}};h.projection=function(a){f=a;return h},h.clip=function(a){if(!arguments.length)return g;g=a;return h},h.area=function(a){return d(k,a)},h.centroid=function(a){return 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d={source:a,target:null},e=b.length,f=-1,g,h,i=[],j=null,k=null;while(++f<e)d.target=b[f],distance=p.distance(d),distance<c?k?(h=p({source:k,target:d.target}),g=q(h,d,c),j&&i.push.apply(i,p({source:j,target:d.target})),i.push.apply(i,h.slice(g)),j=k=null):i.push(d.target):(k=d.target,!j&&i.length&&(h=p({source:i[i.length-1],target:d.target}),g=q(h,d,c),i.push.apply(i,h.slice(0,g)),j=d.target));k&&i.length&&(d.target=i[0],h=p({source:k,target:d.target}),g=q(h,d,c),j&&i.push.apply(i,p({source:j,target:d.target})),i.push.apply(i,h.slice(g)));return i}var a=[0,0],b=90,c=6371*b/180*Math.PI;d.origin=function(b){if(!arguments.length)return a;a=b;return d},d.angle=function(a){if(!arguments.length)return b;b=+a,c=6371*b/180*Math.PI;return d};return d};var p=d3.geo.greatCircle().n(100)})()
\ No newline at end of file
+(function(){function q(a,b,c){var d=-1,e=a.length,f=0,g=Infinity;while(++d<e){b.target=a[d];var h=Math.abs(p.distance(b)-c);h<g&&(g=h,f=d)}b.target=a[f];return f}function o(a){return a.target}function n(a){return a.source}function m(a,b){for(var c=a.coordinates[0],d=0,e=c.length;d<e;d++)b.apply(null,c[d])}function l(a,b){b.apply(null,a.coordinates)}function k(a,b){for(var c=a.coordinates,d=0,e=c.length;d<e;d++)for(var f=c[d][0],g=0,h=f.length;g<h;g++)b.apply(null,f[g])}function j(a,b){for(var c=a.coordinates,d=0,e=c.length;d<e;d++)for(var f=c[d],g=0,h=f.length;g<h;g++)b.apply(null,f[g])}function i(a,b){for(var c=a.coordinates,d=0,e=c.length;d<e;d++)b.apply(null,c[d])}function h(a,b){for(var c=a.features,d=0,f=c.length;d<f;d++)e(c[d].geometry,b)}function g(a,b){e(a.geometry,b)}function e(a,b){a.type in f&&f[a.type](a,b)}function d(a,b){return b&&b.type in a?a[b.type](b):""}function c(){return 0}function b(a){return"m0,"+a+"a"+a+","+a+" 0 1,1 0,"+ -2*a+"a"+a+","+a+" 0 1,1 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d},d.translate=function(a){if(!arguments.length)return c;c=[+a[0],+a[1]];return d};return d},d3.geo.path=function(){function o(a){return Math.abs(d3.geom.polygon(a.map(f)).area())}function m(a){var b=d3.geom.polygon(a[0].map(f)),c=b.centroid(1),d=c[0],e=c[1],g=Math.abs(b.area()),h=0,i=a.length;while(++h<i)b=d3.geom.polygon(a[h].map(f)),c=b.centroid(1),d-=c[0],e-=c[1],g-=Math.abs(b.area());return[d,e,6*g]}function l(a){var b=o(a[0]),c=0,d=a.length;while(++c<d)b-=o(a[c]);return b}function i(a){return f(a).join(",")}function h(c,f){typeof a=="function"&&(e=b(a.apply(this,arguments)));return d(j,c)}var a=4.5,e=b(a),f=d3.geo.albersUsa(),g=Object,j={FeatureCollection:function(a){var b=[],c=a.features,e=-1,f=c.length;while(++e<f)b.push(d(j,c[e].geometry));return b.join("")},Feature:function(a){return d(j,a.geometry)},Point:function(a){var b=g.call(this,[a.coordinates]);return b.length?"M"+i(b[0])+e:""},MultiPoint:function(a){var 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b=[],c=a.geometries,e=-1,f=c.length;while(++e<f)b.push(d(j,c[e]));return b.join("")}},k={FeatureCollection:function(a){var b=0,c=a.features,e=-1,f=c.length;while(++e<f)b+=d(k,c[e]);return b},Feature:function(a){return d(k,a.geometry)},Point:c,MultiPoint:c,LineString:c,MultiLineString:c,Polygon:function(a){return l(a.coordinates)},MultiPolygon:function(a){var b=0,c=a.coordinates,d=-1,e=c.length;while(++d<e)b+=l(c[d]);return b},GeometryCollection:function(a){var b=0,c=a.geometries,e=-1,f=c.length;while(++e<f)b+=d(k,c[e]);return b}},n={Feature:function(a){return d(n,a.geometry)},Polygon:function(a){var b=m(a.coordinates);return[b[0]/b[2],b[1]/b[2]]},MultiPolygon:function(a){var b=0,c=a.coordinates,d,e=0,f=0,g=0,h=-1,i=c.length;while(++h<i)d=m(c[h]),e+=d[0],f+=d[1],g+=d[2];return[e/g,f/g]}};h.projection=function(a){f=a;return h},h.clip=function(a){if(!arguments.length)return g;g=a;return h},h.area=function(a){return d(k,a)},h.centroid=function(a){return d(n,a)},h.pointRadius=function(c){typeof c=="function"?a=c:(a=+c,e=b(a));return h};return h},d3.geo.bounds=function(a){var b=Infinity,c=Infinity,d=-Infinity,f=-Infinity;e(a,function(a,e){a<b&&(b=a),a>d&&(d=a),e<c&&(c=e),e>f&&(f=e)});return[[b,c],[d,f]]};var f={Feature:g,FeatureCollection:h,LineString:i,MultiLineString:j,MultiPoint:i,MultiPolygon:k,Point:l,Polygon:m};d3.geo.greatCircle=function(){function f(e,f){var g=b.call(this,e,f),h=c.call(this,e,f),i=g[0]*a,j=g[1]*a,k=h[0]*a,l=h[1]*a,m=Math.cos(i),n=Math.sin(i),o=Math.cos(j),p=Math.sin(j),q=Math.cos(k),r=Math.sin(k),s=Math.cos(l),t=Math.sin(l),e=Math.acos(p*t+o*s*Math.cos(k-i)),u=Math.sin(e),v=e/(d-1),w=-v,x=[],f=-1;while(++f<d){w+=v;var y=Math.sin(e-w)/u,z=Math.sin(w)/u,A=y*o*m+z*s*q,B=y*o*n+z*s*r,C=y*p+z*t;x[f]=[Math.atan2(B,A)/a,Math.atan2(C,Math.sqrt(A*A+B*B))/a]}return x}var b=n,c=o,d=100,e=6371;f.source=function(a){if(!arguments.length)return b;b=a;return f},f.target=function(a){if(!arguments.length)return c;c=a;return f},f.n=function(a){if(!arguments.length)return d;d=+a;return f},f.radius=function(a){if(!arguments.length)return e;e=+a;return f},f.distance=function(d,f){var g=b.call(this,d,f),h=c.call(this,d,f),i=g[0]*a,j=g[1]*a,k=h[0]*a,l=h[1]*a,m=Math.sin((l-j)/2),n=Math.sin((k-i)/2),o=m*m+Math.cos(j)*Math.cos(l)*n*n;return e*2*Math.atan2(Math.sqrt(o),Math.sqrt(1-o))};return f},d3.geo.clip=function(){function d(b){var d={source:a,target:null},e=b.length,f=-1,g,h,i=[],j=null,k=null;while(++f<e)d.target=b[f],distance=p.distance(d),distance<c?k?(h=p({source:k,target:d.target}),g=q(h,d,c),j&&i.push.apply(i,p({source:j,target:d.target})),i.push.apply(i,h.slice(g)),j=k=null):i.push(d.target):(k=d.target,!j&&i.length&&(h=p({source:i[i.length-1],target:d.target}),g=q(h,d,c),i.push.apply(i,h.slice(0,g)),j=d.target));k&&i.length&&(d.target=i[0],h=p({source:k,target:d.target}),g=q(h,d,c),j&&i.push.apply(i,p({source:j,target:d.target})),i.push.apply(i,h.slice(g)));return i}var a=[0,0],b=90,c=6371*b/180*Math.PI;d.origin=function(b){if(!arguments.length)return a;a=b;return d},d.angle=function(a){if(!arguments.length)return b;b=+a,c=6371*b/180*Math.PI;return d};return d};var p=d3.geo.greatCircle().n(100)})()
\ No newline at end of file
diff --git a/src/geo/greatCircle.js b/src/geo/greatCircle.js
index 80cdfe90..a5408267 100644
--- a/src/geo/greatCircle.js
+++ b/src/geo/greatCircle.js
@@ -6,7 +6,7 @@ d3.geo.greatCircle = function() {
       radius = 6371; // Mean radius of Earth, in km.
   // TODO: breakAtDateLine?
 
-  function greatCircle(d, i, dist) {
+  function greatCircle(d, i) {
     var from = source.call(this, d, i),
         to = target.call(this, d, i),
         x0 = from[0] * d3_radians,
@@ -17,15 +17,13 @@ d3.geo.greatCircle = function() {
         cy0 = Math.cos(y0), sy0 = Math.sin(y0),
         cx1 = Math.cos(x1), sx1 = Math.sin(x1),
         cy1 = Math.cos(y1), sy1 = Math.sin(y1),
-        d = dist || Math.acos(sy0 * sy1 + cy0 * cy1 * Math.cos(x1 - x0)),
+        d = Math.acos(sy0 * sy1 + cy0 * cy1 * Math.cos(x1 - x0)),
         sd = Math.sin(d),
         f = d / (n - 1),
         e = -f,
         path = [],
         i = -1;
 
-    if (d === 0) return [from];
-
     while (++i < n) {
       e += f;
       var A = Math.sin(d - e) / sd,