src/main/java/com/conveyal/gtfs/stats/PatternStats.java
public double getTotalDistanceForTrips (Collection<Trip> trips) {
        TDoubleList distances = new TDoubleArrayList();
        for (Trip trip : trips) {
            distances.add(feed.getTripDistance(trip.trip_id, false));
        }

        return distances.sum();
    }
public double getTotalDistanceForTrips (Collection<Trip> trips) {
        TDoubleList distances = new TDoubleArrayList();
        for (Trip trip : trips) {
            distances.add(feed.getTripDistance(trip.trip_id, false));
        }

        return distances.sum();
    }
Get total revenue distance (in meters) for set of trips.
@param trips
@return total trip distance (in meters)