The road to your own record
Picture the course in advance
and find the pace that fits you.

The city you want to run becomes your next trip.


THE DREAM
The 21st competition will be held at the Oiso Prince Hotel on Sunday, December 6, 2026.
The event is hosted by the Shonan International Marathon Executive Committee,
and Oiso-machi, Hiratsuka-shi, Chigasaki-shi, Fujisawa-shi, Ninomiya-machi, etc. participate.
The events are full marathon (capacity 19,500, participation fee 16,500 yen, overseas 21,500 yen),
Fun Run 10km (4,800 general students 8,500 yen/200 high school students 5,500 yen),
Fun Run 2km (junior high students, upper elementary students, and parent-child pairs in the Family Run),
Run & Walk 1.4km (100 people), and overseas residents can only apply for full marathon.
Picture the course in advance
and find the pace that fits you.
Streets lined with cheers, runners all around.
You'll be part of that scene.
Take it slow with the finish still in you,
and meet the city all over again.
From the joy of finishing to the tough moments — read what runners wrote themselves.
“I took part in the Shonan International Marathon 2025 as my first full marathon and achieved a sub-4 finish with a net time of 3 hours 48 minutes 59 seconds!”
The runner took part in the Shonan International Marathon 2025 as their first full marathon and finished in a net time of 3 hours 48 minutes 59 seconds. The runner describes the preparation and race experience from a participant's perspective, including personal-bottle aid stations, congestion early in the race, toilet queues, and the gradual climb in the latter stages.
Quoted from the original · translated
私は今回、初めてのフルマラソンとして湘南国際マラソン2025に参加し、3時間48分59秒(ネットタイム)でサブ4達成をしました!
Read the original on isuya0118.com“Although I suffered leg cramps, this pace was the first race where I felt I could just about keep running to the finish.”
In the second Shonan full marathon, the runner set a personal best with a net time of 3:44:48 and a gun time of 3:51:22. The runner struggled with the toilet queue and taking on fluids and fuel. After suffering cramps in the legs after 35km, the runner stretched, adjusted the pace, and finished the race.
Quoted from the original · translated
足攣りを発生させてしまったものの、「このペースならギリギリ走り切れる」という感覚を持てたのは新体験でした。
Read the original on note.com“It felt as though my legs had completely stopped on the uphill section around 37km.”
ShibuyaRyuichi set a personal best at the Shonan International Marathon, but dealt with congestion at the start, a pacer group bottleneck between 25 and 30K, and declining muscular endurance after 30K. His legs felt like they'd stopped on the 37K climb, but he kept pushing his pace to the finish.
Quoted from the original · translated
37km辺りの上り坂で、完全に脚が止まった感覚がありました。
Read the original on ど真ん中を生きる“Running toward Mount Fuji in particular is what makes this race unique.”
A first-time Shonan full marathon participant records the shuttle transfer, bathroom queues, aid stations using personal bottles, and a race in which they increased their pace in the latter stages.
Quoted from the original · translated
特に「富士山に向かって走る」という体験は、この大会ならでは。
Read the original on isuya0118.com“This course has more uphill sections on the return.”
goodenough ran at a relaxed pace with a friend, enjoying the coastal scenery and local snacks. They found the gentle uphill on the return leg and the bypass in the later stages tough on tired legs.
Quoted from the original · translated
このコースは帰りのほうが登り気味。
Read the original on Ameba Blog“I enjoyed running along the coast beneath clear skies, encouraged by the warm support from people along the route.”
The runner enjoyed the cheering and views of Mount Fuji while running the coastal full marathon from Oiso toward Enoshima. The runner alternated between running and walking in the second half and walked briefly on the final climb, but then ran to the finish line to finish in 4:28:58, achieving the goal of finishing within 4 hours 30 minutes.
Quoted from the original · translated
沿道からの暖かい応援を受けながら、青空の海岸線を気持ちよく走ります。
Read the original on note“The headwind also made the distance feel longer than expected.”
The couple were worried about the early cutoff because of starting in the last block and waiting for the toilets, but they finished while enjoying plenty of drinks and snacks. The headwind along the coast in the latter part and the steep incline just before the finish were challenging, but they achieved their first sub-5 finish with a net time of 4 hours 52 minutes 53 seconds.
Quoted from the original · translated
向かい風の影響もあり 思った以上に距離がありました。
Read the original on えだ旅 WORLD JOURNEYWe translated a short line from each public race report and summarized the experience. Finish times are as stated by the author, and past editions may differ from this year's weather and operations.
Preview the course and read what runners who went before you wrote.
走るTV · Course preview
This may be from a past edition. Check the organizer for this year's course and operations.
YOUR ENTRY
Here are the ways to enter and what each requires.
Check the organizer's page for whether entries are open.
The 2026 race opened entry on Sat, April 4, 2026
subject to change — verify officially
Organizer's pagesubject to change — verify officially
Organizer's pagesubject to change — verify officially
Organizer's pagesubject to change — verify officially
Organizer's pagesubject to change — verify officially
Organizer's pagesubject to change — verify officially
Organizer's pageRegistration platform RUNNET
RACE WEEK
Know the course and time limit, and race day comes into focus.
From the 2025 edition6 hours 30 minutes / 2 hours / 30 minutes / 40 minutes
Full marathon 16,500 yen Fun Run 10km (general) 8,500 yen Fun Run 10km (high school student) 5,500 yen Fun Run 2km (junior high school student / upper elementary school student) 1,000 yen Fun Run 2km (family run parent and child) 2,000 yen Run & Walk 1.4 km 1,000 yen full marathon (Training frame) 55,000 yen (breakdown: participation fee 16,500 yen, training fee 38,500 yen)
We have not confirmed the start line coordinates yet. The map shows the host city.
Cut-off
2026 Shonan International Marathon full marathon cut-off point has 9 locations: approximately 5.1km 10:10, 10.8km 10:56, 14.2km 11:24, 19.2km 12:03, 21.9km 12:25, 28.3km 13:17, 35.0km 14:13, 37.1km 14:29, 39.6km 14:55, and the finish is 15:30 (time limit 6 hours and 30 minutes).
Runners start · local time — (full marathon) / 09:50(Fun Run 10km (general)) / 09:50(Fun Run 10km (high school students)) / 10:50(Fun Run 2km (junior high school students)) / 10:55(Fun Run 2km (elementary school upper grades)) / 11:00(Fun Run 2km (Family run parent and child)) / 09:00(Run & Walk 1.4km)
The venue is the Oiso Prince Hotel and runs along the Seisho Bypass and coastal roads along the coast of Sagami Bay.
Full marathon starts from the Seisho Bypass Oisonishi IC, passes through Karagahara - Hiratsuka Coast - Yanagishima - Chigasaki Coast,
makes a first return near the entrance to Enoshima, returns the same way,
makes a second return at Seishoninomiya IC, and then finishes at the Oiso Prince Hotel.
Departure is at 9 o'clock, time limit is 6 hours and 30 minutes, and there are distance marks every 1 km.
Cut-off point is 9 locations,
approximately 5.1km Hiratsuka Hachiken-dori entrance intersection 10:10, approximately 10.8km Chigasaki Park 10:56, approximately 14.2km In front of Tsujido Beach Park West Parking Lot 11:24, approximately 19.2km Chubu Bus Parking Lot 12:03, approximately 21.9km Tsujido Beach Park East Parking Lot Tunnel First 12:25, about 28.3km Sagami River Basin Sewage Treatment Plant on the left bank 13:17, about 35.0km Oiso Port IC 14:13, about 37.1km Oisonishi IC 14:29, about 39.6km Seishoninomiya IC 14:55, finish at 15:30.
A sweep bus for runners who drop out follows at the back of the field;
if it catches you, you're disqualified even before the cutoff time.
Water supply is installed at intervals of about 200m in a section from about 5km to about 40km,
and food stations are set up at six locations: Chigasaki Park,
Tsujido Beach Park West Parking Lot, Chubu Bus Parking Lot, Hamasuga,
Sagami River Basin Sewage Treatment Plant on the left bank, and Karagahara.
There are 12 relief stations, and toilets are built around cut-off point and above course.
Fun Run 10km starts at Oisonishi IC and returns at Nijigahama Intersection with course,
departure at 9:50, time limit 2 hours, and water supply is installed every 200m from about 4.5km to about 9.5km.
The 2km Fun Run turns around about 500m from Oisonishi IC toward Hiratsuka, with a 30-minute time limit.
The 1.4km Run & Walk goes from the Fujisawa Nishihama overpass and turns around at the Enoshima entrance intersection, with a 40-minute time limit.
Marathon
Marathon
Marathon
Marathon
Marathon
Marathon
Marathon
Pick up your bib, check your wave.
So on race morning, you can just run.
It is a completely pre-shipment system with no prior runner registration — bib, measurement tags, baggage stickers, etc.
will be mailed to the registered address around early November, so be sure to bring them with you on the day of the race.
Measurement tags will be returned in the enclosed envelope after the competition.
JR Tōkaidō Line: Ninomiya Station or Ōiso Station (free shuttle bus from both to venue)
Start is at Nishi-Shonan Bypass Ōiso-nishi IC.
Nearest JR stations are Ninomiya and Ōiso on the JR Tōkaidō Line;
free shuttle buses run from both stations to the venue on race day.
21st edition.
Date confirmed Dec 6, 2026.
Ōiso Prince Hotel (finish venue); same Ninomiya/Ōiso Station shuttle applies
Finish is at Ōiso Prince Hotel, accessible via the same free shuttle bus service from Ninomiya/Ōiso JR stations.
Free shuttle buses from both Ninomiya and Ōiso JR stations to the venue on race day;
additionally, direct paid buses run from various points in Kanagawa Prefecture and greater Tokyo.
Your start time, fuel and bag drop.
Know them ahead and the run feels easier.
This competition is the “Environment-Conscious My Cup/My Bottle Marathon,” which is the first in the world to achieve zero discharge of disposable cups and plastic bottles as mentioned above.
Water is only received through own bottles and cups.
Full marathon Participants must depart with a My Bottle containing at least 200ml of water,
and since special drinks and other beverages will be provided, it is strongly recommended that they also bring a My Cup.
Fun Run For 10km, it is essential to carry My Cup and My Bottle is also recommended.
Fun Run There are no water points during the race for 2km and Run & Walk 1.4km, but My Cup is required to water after the finish.
As the number of lost bottles and cups is increasing, we advise people to write down the number bib or put a mark on it.
On the course, 200 water points are set up every 200m, and about 40 tons of water are prepared.
Placings and times are recorded with timing tags, and if the tag is not installed correctly or is forgotten,
no record will be left and you will be disqualified.
The participation prize will be an original THE NORTH FACE competition t-shirt that will be sent in advance.
As an option, there is the Runner Support Plan (1,000 yen), which guarantees a refund if the race is canceled,
and the Clean Start Plan (2,200 yen including the special bag),
where you can leave the outerwear you were wearing before departure in a special bag and retrieve it at course and return it after the finish.
The nearest stations to the venue are Ninomiya Station and Oiso Station on the JR Tokaido Line,
and free shuttle buses will run from both stations all day on the day of the competition.
At both stations, the areas around the platforms and ticket gates are very narrow, so congestion is expected, so please allow plenty of time.
Since there are few payment machines, we advise you to charge a round-trip ticket in advance to a transportation IC card such as Suica or Pasmo.
There is no Midori-no-Madoguchi at Oiso Station, and the Ninomiya Station counter is very crowded, so you need to purchase a reserved seat ticket in advance.
There are no parking lots inside or outside the venue, the Oiso Prince Hotel site is only available to hotel guests,
and we advise you to refrain from providing shuttles to the venue as this will cause congestion.
If it is confirmed that you have used a vehicle in violation of this, you may not be allowed to start on race day.
Direct buses to the venue are sold from various parts of Kanagawa Prefecture and major cities in the metropolitan area,
and reception opens at 12:00 on Monday, June 1, 2026.
If you come by bicycle, use the designated bicycle parking, but space is limited.
Times are local to Oiso. Check the latest official information before the race.
STAY A LITTLE
From a hotel that makes race morning easy,
to the meals and views you'll enjoy with the medal on.


Distances are straight-line from the start.
Check real travel times and booking terms with each hotel.
Hotel · 4.4km
View on Booking.comAccommodation · 3.8km
View on Booking.comSwipe sideways to see more hotels.
Rest a little, wander a little.
Pick what suits you and whoever you're with.
¥2,674
View on Klook¥11,267
View on Klook¥9,471
View on Klook¥11,390
View on Klook¥22,800
View on Klook¥11,390
View on Klook¥29,332
View on Klook¥26,370
View on Klook¥20,493
View on Klook¥16,272
View on Klook¥11,344
View on Klook¥11,344
View on Klook¥14,500
View on Klook¥19,181
View on GetYourGuide¥16,252
View on Klook¥3,388
View on Klook¥24,555
View on Klook¥83,595
View on Klook¥39,221
View on Klook¥13,513
View on Klook¥14,594
View on Klook¥13,075
View on Klook¥12,708
View on Klook¥12,708
View on Klook¥13,075
View on Klook¥59,948
View on Klook¥1,827
View on Klook¥3,103
View on Klook¥4,969
View on Klook¥1,837
View on Klook¥2,674
View on Klook¥367
View on Klook¥2,245
View on Klook¥612
View on Klook¥919
View on Klook¥10,285
View on Klook¥10,203
View on Klook¥12,077
View on Klook¥14,541
View on Klook¥12,708
View on Klook¥9,736
View on Klook¥7,943
View on Klook¥90,057
View on Klook¥13,063
View on Klook¥408
View on Klook¥13,063
View on Klook¥13,839
View on Klook¥2,449
View on Klook¥10,757
View on Klook¥55,822
View on Klook¥78,442
View on Klook¥28,919
View on Klook¥5,103
View on Klook¥7,471
View on Klook¥5,634
View on Klook¥38,047
View on KlookA meal before the race, a dinner to celebrate the finish.
Italian Restaurant · 大磯町他 2.4km
MapSeafood Restaurant · 大磯町他 587m
MapRamen Restaurant · 大磯町他 2.7km
MapChinese Restaurant · 大磯町他 2.8km
MapJapanese Restaurant · 大磯町他 3.3km
MapRamen Restaurant · 大磯町他 2.3km
MapSushi Restaurant · 大磯町他 2.6km
MapThe city you ran — this time, a little slower.
Park · 大磯町他 1.4km
MapShinto Shrine · 大磯町他 10.4km
MapAquarium · 大磯町他 15.3km
MapObservation Deck · 大磯町他 15.2km
MapCastle · 大磯町他 15.7km
MapFarm · 大磯町他 5.7km
MapMuseum · 大磯町他 18.8km
MapOnce saved, you can open this page without an internet connection
Be the first runner
Leave this room's first post
Not announced yet. The 2025 race entry fee was about ¥8,500.
It takes place on Sun, December 6, 2026 in Oiso, 神奈川県, Japan.
6 hours 30 minutes / 2 hours / 30 minutes / 40 minutes. (From the 2025 edition)
10K · Marathon. (From the 2025 edition)
Reception location: None (number cards will be sent in advance).
(From the 2025 edition)
Near Seisho Bypass Oiso Nishi IC, Run & Walk near Fujisawa City Nishihama Pedestrian Bridge Intersection.
(From the 2025 edition)
Run & Walk is in the Oiso Prince Hotel parking lot, near the Fujisawa City Nishihama Pedestrian Bridge intersection.
(From the 2025 edition)
Registration runs from Sat, April 4, 2026 to Sat, June 6, 2026.
You can compare live prices for hotels around the start in Oiso in the STAY section of this page.