Route 51 is a general national highway that runs from the intersection of Routes 14, 128, and 126 in Chūō Ward, Chiba City, Chiba Prefecture, to the intersection of Routes 50, 124, and 245 in Mito City, Ibaraki Prefecture, via Yotsukaido City, Sakura City, Shisui Town, Narita City, and Katori City in Chiba Prefecture, and Inashiki City, Itako City, and Kashima City in Ibaraki Prefecture.
It connects Narita International Airport, Ōarai Port, and other important ports along the route.
START ：Route 51 Start (Hirokōji intersection = Route 14 and 128 End, Route 126 intersection) - Hon-chō, Chūō Ward, Chiba City, Chiba Pref.
GOAL : Route 51 End (Mito Station intersection = Route 50/124 End, Route 245 Start) - Miya-machi, Mito City, Ibaraki Pref.
DATE ：Late Oct. 2023
DISTANCE : About 124 km (measured by Google Maps)
ROUTE MAP: www.google.com/maps/d/u/0/emb...
00:00:00 Intro
00:04:05 Route 51 Start (Hirokōji intersection = Route 14 and 128 End, Route 126 intersection) - Hon-chō, Chūō Ward, Chiba City, Chiba Pref.
00:08:54 ←→ Route 16 - Miyako-chō, Chūō Ward, Chiba City, Chiba Pref.
00:13:02 ← Route 51 Kita-Chiba Bypass - Sakuragi-kita, Wakaba Ward, Chiba City, Chiba Pref.
00:24:11 ←→ Chiba Prefectural Route 66 Hamano Yotsukaidō Naganuma Line - Yoshioka, Yotsukaidō City, Chiba Pref.
00:28:20 ↗ Chiba Prefectural Route 22 Chiba Yachimata Yokoshiba Line - Sakado, Sakura City, Chiba Pref.
00:32:57 ← Chiba Prefectural Route 65 Sakura Inzai Line｜→ Chiba Prefectural Route 277 Gōdo Yachimachi Line - Gōdo, Sakura City, Chiba Prefecture
00:34:29 E51 HIGASHI-KANTŌ EXPWY, Sakura IC - Takasaki, Sakura City, Chiba Pref.
00:40:25 ←→ Route 296 - Kami-motosakura, Shisui-machi, Inba District, Chiba Pref.
00:49:59 → Route 409 - Namiki-chō, Narita City, Chiba Pref.
00:50:18 ← Route 464 - Namiki-chō, Narita City, Chiba Pref.
00:59:04 ← Route 408 / → Route 295 - Teradai, Narita City, Chiba Pref.
01:09:17 Toyomi Tunnel L=428.8m - Toyomi, Narita City, Chiba Pref.
01:13:12 ←→ Chiba Prefectural Route 79 Yokoshiba Shimofusa Line - Kichioka, Narita City, Chiba Pref.
01:18:31 ← Chiba Prefectural Route 110 Kōri Station Ōsuka Line - Inō, Narita City, Chiba Pref.
01:20:45 E51 HIGASHI-KANTŌ EXPWY, Taiei IC - Najiki, Narita City, Chiba Pref.
01:23:17 → Chiba Prefectural Route 113 Sawara Tako Line - Sakurada, Narita City, Chiba Pref.
01:29:03 Yokura Drive-in - Yokura, Katori City, Chiba Pref.
01:31:59 ↖Route 356 - Sawaraho, Katori City, Chiba Pref.
01:33:01 → Ibaraki/Chiba Prefectural Route 2 Mito Hokota Sawara Line - Sawaraho, Katori City, Chiba Pref.
01:33:17 Suigō Ōhashi Bridge (Tonegawa River) - Sawararo, Katori City, Chiba Pref.
01:33:37 Prefectural Border - Katori City, Chiba Pref. → Inashiki City, Ibaraki Pref.
01:36:19 ← Route 125 - Nishishiro, Inashiki City, Ibaraki Pref.
01:40:47 Araiya Auto Corner - Sakaijima, Inashiki City, Ibaraki Pref.
01:41:36 Kitatone Bridge (Kasumigaura Bay) - Nagayama, Itako City, Ibaraki Pref.
01:41:47 ↖ Route 355 - Nagayama, Itako City, Ibaraki Pref.
01:45:15 → Ibaraki Prefectural Route 5 Ryūgasaki Itako Line - Uwato, Itako City, Ibaraki Pref.
01:49:39 ←→ Ibaraki Prefectural Route 50 Mito Kamisu Line - Suka, Itako City, Ibaraki Pref.
01:54:34 ← Route 51 Kashima Bypass / ↑Route 51 Old Road - Susaki, Itako City, Ibaraki Pref.
01:59:49 ← Ibaraki Prefectural Route 242 Hokota Kashima Line｜→ Route 124 - Kyūchū, Kashima City, Ibaraki Pref.
02:01:09 Ibaraki Kashima Soccer Stadium - Jinkōji, Kashima City, Ibaraki Pref.
02:09:12 ← Ibaraki Prefectural Route 186 Arai Namegata Line - Arai, Kashima City, Ibaraki Pref.
02:12:36 Kamihataki, Hokota City, Ibaraki Pref.
02:17:47 ← Route 354 - Kumiage, Hokota City, Ibaraki Pref.
02:23:00 Prefectural Kashimanada Seaside Park - Ōtake, Hokota City, Ibaraki Pref.
02:29:39 ← Ibaraki/Chiba Prefectural Route 2 Mito Hokota Sawara Line - Takihama, Hokota City, Ibaraki Pref.
02:34:56 ← Ibaraki Prefectural Route 115 Konaji Ibaraki Line - Konaji, Hokota City, Ibaraki Pref.
02:39:45 Japan Atomic Energy Agency, Ōarai Research and Development Institute - Narita-chō, Ōarai-machi, Higashiibaraki District, Ibaraki Pref.
02:48:31 → Route 245 - Shiogasaki-chō, Mito City, Ibaraki Pref.
02:51:06 E50 HIGASHI-MITO EXPWY, Mito-Ōarai IC - Ōkushi-chō, Mito City, Ibaraki Pref.
02:57:59 ←→ Route 6 - Hamada, Mito City, Ibaraki Pref.
03:01:27 Jōnan 3 intersection - Jōnan, Mito City, Ibaraki Pref.
03:01:51 Ryūtei Bridge (Sakura River) - Saku-machi, Mito City, Ibaraki Pref.
03:03:34 Route 51 End (Mito Station intersection = Route 50/124 End, Route 245 Start) - Miya-machi, Mito City, Ibaraki Pref.