public static void setBrouterAutoTileDownloadsLastCheck(final boolean delay) {
        putLong(R.string.pref_brouterAutoTileDownloadsLastCheck, calculateNewTimestamp(delay, getBrouterAutoTileDownloadsInterval() * 24));
    }
The threshold for brouter routing (max. distance)
main/src/main/java/cgeo/geocaching/settings/Settings.java