Ik weet niet precies wat je wilt doen met die knooppunten maar die GPX is inderdaad gedateerd en bevat alleen de knooppunten en niet de wegen ertussen. Misschien heb je wat aan dit kaartje.
Daar zit wat code in om via overpass de knooppunten en routes op te vragen.
if (type == "route"){
map.addLayers([
//highway=cycleway
make_layer(QURL + "?data=(way[highway=cycleway](bbox);node(w);way[highway=path][bicycle=designated](bbox);node(w););out+skel;", "red",name="#l#highway=cycleway<hr>Route relations:", 3, false),
//route=bicycle
make_layer(QURL + "?data=(relation[route=bicycle][network=ncn](bbox);way(r)(bbox);node(w););out+skel;", "blue",name="#l#NCN route <i>(LF route)</i>", 8, false,"@0.6"),
// knooppuntenroutes
make_a_layer(QURL + "?data=relation(bbox)[network=rcn];(way(r)(bbox);node(w););out+skel;node(bbox)[rcn_ref];out;", "green",name="#l#RCN route <i>(knooppuntroute)</i>", 5, false),
make_layer(QURL + "?data=(relation[route=bicycle][network=lcn](bbox);way(r)(bbox);node(w););out+skel;", "#00FFFF",name="#dl#LCN route <i>(lokale route)</i>", 5, false,"4 8"),
make_layer(QURL + "?data=(relation[network=icn](bbox);way(r)(bbox);node(w););out+skel;relation[network=icn];rel(r)(bbox);(way(r)(bbox);node(w););out skel;", "yellow",name="#dl#ICN route <i>(Int.route)</i>", 3, false,"4 8"),
//route=mtb
make_layer(QURL + "?data=(relation[route=mtb](bbox);way(r)(bbox);node(w););out+skel;", "#bd008b",name="#dl#MTB route", 4, false,"4 8"),
//route=hiking, horse
make_a_layer(QURL + "?data=(relation[route~'hik|foot|walk'](bbox);way(r)(bbox);node(w););out+skel;node[rwn_ref][rcn_ref!~'.'](bbox);out;", "#390000",name="#l#hiking route", 5, false),
make_a_layer(QURL + "?data=(relation[route=horse](bbox);way(r)(bbox);node(w););out+skel;node(bbox)[rhn_ref];out;", "#7b9520",name="#l#horse route", 4, false),
make_layer(QURL + "?data=(way[railway~'^abandoned|^disused|^dismantled'](bbox);node(w););out+skel;", "#7b3000",name="#dl#former railway lines", 4, false,"4 8"),
make_a_layer(QURL + "?data=node[tourism=information](bbox);out;", "red", name="#co#info<hr>Cyclability (indicative):", 2, false),