var mymap = L.map("mymap").setView([38.803330,139.794846], 12);
L.tileLayer('http://{s}.tile.osm.org/{z}/{x}/{y}.png', {
    attribution: '&copy; <a href="http://osm.org/copyright">OpenStreetMap</a> contributors'
}).addTo(mymap);

var p1 = [
    [38.857246,139.959759],
    [38.857246,139.959759],
    [38.857029,139.957387],
    [38.858182,139.957269],
    [38.857823,139.951422],
    [38.859109,139.945854],
    [38.861657,139.946197],
    [38.865617,139.945993],
    [38.867839,139.945146],
    [38.870120,139.943901],
    [38.875499,139.938097],
    [38.882941,139.933763],

var p1Prop ={
    color: "green",
    opacity: 0.5,
    weight: 10
};

var p1obj = L.polyline(p1, p1Prop).addTo(mymap);

var marker1 = p1[0];
var p1opt = { title: "東北公益文科大学" };
var marker1Obj = L.marker(marker1, p1opt).addTo(mymap);

var lastIndex = p1.length - 1;
var lastCoord = p1[lastIndex];
var p2opt = { title: "中華そば処　琴平荘" };
var marker2 = L.marker(lastCoord, p2opt).addTo(mymap);

p1obj.bindPopup("ルート");
marker1Obj.bindPopup("東北公益文科大学");
marker2.bindPopup("中華そば処　琴平荘").openPopup();