The half day and one day itineraries are recommended trips that start from Yerevan.  For two day trips or longer, overnight stay locations are in italics. (Sites in parenthesis are optional) Crossed out sites mean that you probably do not want to go unless you have a 4x4 vehicle, or are willing to take a long hike. To see ratings of how much I like particular sites, visit the site ratings page. Many of these places may be very difficult to find without a copy of Rediscovering Armenia

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BIKE ARMENIA TOUR

HALF DAY TRIPS

Garni -> Geghard
Khor Virap (although a popular half day trip, it is a waste not to incorporate it into a larger trip)
Mughni -> Hovhannavank -> Saghmosavank
Hripsime -> (Vogharshapat) -> Echmiadzin -> Gayane
Aruj Cathedral -> Aruj Caravanserai -> Talin Cathedral -> Dashtatem Fortress
Karmravor -> Mariane-> Mughni-> Hovhannavank-> Saghmosavank
Ptghni -> Avan
Sardarabad Museum
HIKE from Odzun -> Horomayri -> Kobayr
HIKE from Garni -> Havuts Tar -> Geghard
HIKE from Sanahin -> Haghpat

ONE DAY TRIPS

Climb Mt. Aragats
Garni Temple -> Garni Gorge -> hike to Havuts Tar and back -> Geghard
Amberd Fortress -> Byurakan Observatory -> Byurakan Church -> Tegherivank Monastery
Yeghegis Church-> Teghenyats Monastery (hike final portion) -> Tegherivank
(Shativank) -> Tsakhatskar -> Smbatabert
Bjhni Church -> Bjhni Fortress -> Makravan -> Kecharis
Aruj Cathedral -> Aruj Caravanserai -> Talin Cathedral -> Dashtatem Fortress -> Mastara -> Gyumri
Aruj Cathedral -> Aruj Caravanserai -> Talin Cathedral -> Mastara -> Harichavank -> Gyumri -> Marmashen
Sardarapat -> Yereruyk -> Ani Overlook (if possible) -> Gyumri -> Marmashen
Khor Virap -> Surp Karapet -> Areni -> Noravank -> Zorats (or Glazdor)
Lake Sevan (Sevanavank, Hayravank, Noratus, Vanevan, Makenyats)
Erebuni Museum -> Shengavit -> Metsamor Museum
Khor Virap -> Surp Karapet -> Selim Caravanserai -> Noratus -> Hayravank -> Sevan Monastery
Kecharis -> Dilijan -> Haghartsin -> Goshavank -> (Aghjkaghala)

TWO DAY TRIPS

Dilijan -> Makaravank -> Akhtala -> Haghpat -> Sanahin -> Odzun -> Kobayr
Goris -> Satan's Bridge -> Tatev -> Bgheno-Noravank
Goris -> Khndzoresk -> Dzidzernavank
Goris -> Bgheno-Noravank -> Kapan -> Vahanavank -> Baghaberd -> (Meghri)
Sisian -> Sisavan Church -> Waterfall -> Sisian Museum -> Aghudi Memorial -> Vorotnavank -> Shamb
Sisian -> Ughtasar
Alaverdi/Sanahin -> Akhtala -> Haghpat -> Sanahin -> Odzun -> Horomayri -> Ardvi -> Kobayr
Alaverdi/Sanahin -> Arakelots -> Kirants
Alaverdi/Sanahin -> Mt. Lalvar -> Khorakert
Alaverdi/Sanahin -> H'nevank -> Lori Berd -> Khuchapi
Dilijan/Ijevan -> Nor Varagavank Monastery -> Berd Fortress -> (Khoranashat, after peace treaty is signed)
Yeghegnadzor -> Shativank Monastery -> Tsakhats Kar Monastery-> Smbataberd Fortress
Yeghegnadzor -> Yeghegis Church-> Zorats Cathedral -> Jewish Cemetary -> Arates Monastery
Jermuk -> Spend one or more nights in Jermuk soaking in mineral springs, hiking, and exploring Gndevank
Stepanakert -> S'khtorashen tree -> Amaras Monastery -> G'tichavank Monastery
Stepanakert -> Askeran Fortress -> Aghdam Ghost Town-> Dadivank Monastery

ALMOST EVERYTHING IN ONE TRIP (14 days & nights, 90 sites, non-stop)

(Dvin) -> Khor Virap -> Noravank -> Tsakhats Kar -> Smbatabert -> Zorats -> Yeghegnadzor -> Spitakavor -> Boloraberd -> Tanade -> S. Khach -> G'ndevank -> Jermuk -> Zorakarer -> Sisavan -> Aghudi -> Vorotnavank -> Kotrats Caravanserai -> Goris -> Tatev -> Bgheno-Noravank -> (Yeritsavank) -> (Halidzor) -> Vahanavank -> Baghaberd ->  Kapan -> Khndzoresk -> Tsitsernavank -> Shushi -> Stepanakert -> S'khtorashen -> Amaras -> G'tichavank -> Stepanakert -> Aghdam -> Gandzasar -> Dadivank -> (via Kelbajar pass continue to Lake Sevan) -> Makenyats -> Vanevank -> (Selim Caravanserai) -> Noratus -> Hayravank -> Sevanavank & Beaches (beachfront hotel) -> Dilijan -> Haghartsin -> Goshavank -> Makaravank -> Arakelots -> Kirants -> Alaverdi -> Akhtala -> Haghpat -> Sanahin -> Odzun -> Kobayr -> Hnevank -> Lori Berd -> Stepanavan -> (Dendropark) -> Marmashen -> Gyumri -> Harich -> Lmbatavank -> (Makaravank) -> Mastara -> Talin Cathedral -> Dashtadem -> (Kristapori Vank) -> Sardarapat -> Echmiadzin Cathedral & Museums -> (Gayane) -> Hripsime -> Zvartnots -> Echmiadzin -> Karmravor -> Mariane -> Tegher -> Amberd -> Byurakan B&B (Observatory) -> Saghmosavank -> Hovhannavank -> Mughni -> Garni -> (Havuts Tar) -> Geghard -> YEREVAN

It is really possible to do this "almost everything trip", and in 14 days at that, but it is more of an example than a recommendation.  You would be rushing like mad, and would almost certainly need a 4x4 and someone who speaks eastern Armenian or Russian along with you... but if you do try it, buy tons of film and tell me all about your trip! :-)