diff --git a/src/distance.rs b/src/distance.rs
index 17eeefe..cb8737a 100644
--- a/src/distance.rs
+++ b/src/distance.rs
@@ -1,6 +1,6 @@
 const EARTH_RAD_METERS: f64 = 6371e3;
 
-type LatLon = (f64, f64);
+pub type LatLon = (f64, f64);
 
 pub fn haversine(a: LatLon, b: LatLon) -> f64 {
     let a_latitude = a.0.to_radians();
diff --git a/src/main.rs b/src/main.rs
index 3203d79..3ac62cb 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,13 +1,88 @@
+#![allow(dead_code)]
+
 mod distance;
 mod parse;
 
-use std::collections::HashMap;
+use std::{
+    collections::{hash_map::Entry, HashMap},
+    rc::Rc,
+};
 
 use parse::Record;
 
-#[derive(Debug)]
+type Graph = HashMap<String, Node>;
+type Airports = HashMap<usize, Rc<Airport>>;
+
+#[derive(Debug, Clone)]
 struct Node {
-    destinations: Vec<Record>,
+    origin: Rc<Airport>,
+    destinations: Vec<Destination>,
+    visited: bool,
+}
+
+impl Node {
+    fn new(origin: Rc<Airport>, destinations: Vec<Destination>) -> Self {
+        Node {
+            destinations,
+            origin,
+            visited: false,
+        }
+    }
+}
+
+#[derive(Debug, Clone)]
+struct Airport {
+    id: usize,
+    code: String,
+    name: String,
+    city: String,
+    country: String,
+    lat: f64,
+    lon: f64,
+}
+
+#[derive(Debug, Clone)]
+struct Destination {
+    airport: Rc<Airport>,
+    distance: f64,
+}
+
+impl Destination {
+    fn new(source: &Airport, destination: Rc<Airport>) -> Self {
+        Destination {
+            distance: distance::haversine(
+                (source.lat, source.lon),
+                (destination.lat, destination.lon),
+            ),
+            airport: destination,
+        }
+    }
+}
+
+fn insert_airports_from_record(airports: &mut Airports, record: &Record) {
+    if let Entry::Vacant(entry) = airports.entry(record.origin_airport_id) {
+        entry.insert(Rc::new(Airport {
+            id: record.origin_airport_id,
+            code: record.origin_airport_code.clone(),
+            name: record.origin_airport.clone(),
+            city: record.origin_city.clone(),
+            country: record.origin_country.clone(),
+            lat: record.origin_airport_latitude,
+            lon: record.origin_airport_longitude,
+        }));
+    }
+
+    if let Entry::Vacant(entry) = airports.entry(record.destination_airport_id) {
+        entry.insert(Rc::new(Airport {
+            id: record.destination_airport_id,
+            code: record.destination_airport_code.clone(),
+            name: record.destination_airport.clone(),
+            city: record.destination_city.clone(),
+            country: record.destination_country.clone(),
+            lat: record.destination_airport_latitude,
+            lon: record.destination_airport_longitude,
+        }));
+    }
 }
 
 fn main() {
@@ -17,17 +92,25 @@ fn main() {
         .flatten()
         .collect();
 
-    let mut graph: HashMap<String, Node> = HashMap::new();
+    let mut airports: Airports = HashMap::new();
 
-    for record in data.into_iter() {
-        use std::collections::hash_map::Entry;
+    for record in &data {
+        insert_airports_from_record(&mut airports, record);
+    }
 
+    let mut graph: Graph = HashMap::new();
+
+    for record in data {
         match graph.entry(record.origin_airport_code.clone()) {
-            Entry::Occupied(mut entry) => entry.get_mut().destinations.push(record),
+            Entry::Occupied(mut entry) => entry
+                .get_mut()
+                .destinations
+                .push(record.get_destination(&airports)),
             Entry::Vacant(entry) => {
-                entry.insert(Node {
-                    destinations: vec![record],
-                });
+                entry.insert(Node::new(
+                    airports[&record.origin_airport_id].clone(),
+                    vec![record.get_destination(&airports)],
+                ));
             }
         }
     }
diff --git a/src/parse.rs b/src/parse.rs
index 87719d9..aa47da3 100644
--- a/src/parse.rs
+++ b/src/parse.rs
@@ -1,4 +1,6 @@
-#[derive(Debug, serde::Deserialize)]
+use crate::{Airports, Destination};
+
+#[derive(Debug, Clone, serde::Deserialize)]
 pub struct Record {
     pub origin_airport_code: String,
     pub origin_airport: String,
@@ -15,3 +17,12 @@ pub struct Record {
     pub destination_city: String,
     pub destination_country: String,
 }
+
+impl Record {
+    pub fn get_destination(&self, airports: &Airports) -> Destination {
+        Destination::new(
+            &airports[&self.origin_airport_id],
+            airports[&self.destination_airport_id].clone(),
+        )
+    }
+}