Gravel Plus Shimanami

Medium
Date
2026-04-19
Location
Imabari, Ehime, Japan
Distance
100 km
Elevation
1500m
Category
Gravel
Region
Asia
Organizer
Manual Entry
Terrain
Gravel
About

Spring gravel event near the Shimanami Kaido, combining island bridges with backcountry gravel roads.

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▌ RIDER INTEL DOSSIER
63
GR SCORE
/ 100
TIER 3
~/dossier/gravel-plus-shimanami $ cat briefing.md

Spring gravel event near the Shimanami Kaido, combining island bridges with backcountry gravel roads

Asia gravel event organized by Manual Entry

EFFORT23/50
EXPER.43/70

12 SCORING DIMENSIONS

GRAVEL PLUS SHIMANAMI
LENGTH6/10CLIMBING5/10DURABILITY6/10TECHNICALITY2/10RACE PRESSURE4/10ADVENTURE5/10SCENERY6/10ORGANIZATION7/10VALUE7/10COMMUNITY6/10ACCESSIBILITY7/10FIELD DEPTH5/10

EFFORT MATRIX

LENGTH06/10
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100 km — manageable single-day
CLIMBING05/10
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1,500 m total — 15 m/km
DURABILITY06/10
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Plan for 5+ hours in the saddle
TECHNICALITY02/10
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Gravel
RACE PRESSURE04/10
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Standard race-day intensity

EXPERIENCE MATRIX

ADVENTURE05/10
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Single-day event with strong sense of place
SCENERY06/10
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Gravel
ORGANIZATION07/10
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Community-sourced details
VALUE07/10
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Reasonable cost-per-km
COMMUNITY06/10
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Grassroots gravel scene around the event
ACCESSIBILITY07/10
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Reasonable to enter
FIELD DEPTH05/10
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Mixed field — pros + adventure riders

GREEN FLAGS

  • [+]100 km of medium gravel through Imabari, Ehime
  • [+]Organized by Manual Entry
  • [+]Varied terrain: Gravel

RED FLAGS

  • [!]Details not yet verified — confirm via official site

RIDER FIT

Endurance MuleGOOD · 6/10

Manageable for steady-state riders

ClimberOK · 5/10

Limited use for pure climbers

Adventure TouristGOOD · 6/10

Single-day event with strong sense of place

BikepackerOK · 4/10

Wrong format for bikepacking specifics

SpeedsterGOOD · 6.5/10

Smoother surfaces let raw speed talk

Crit RacerAVOID · 2/10

Single-day pace suits crit-style riders less here

TIRE INTEL

WIDTH
38-42 mm
PRESSURE
28-34 psi
PATTERN
Semi-slick centre w/ light side knobs

Mixed gravel with no extreme demands — go for rolling speed.

▶ TOP PICKS
1.Continental Terra Trail[38mm]Durable casing, balanced grip
2.Schwalbe G-One Bite[38mm]Excellent loose-surface bite
3.Pirelli Cinturato Gravel H[38mm]Hard-pack speed

WEATHER PLAYBOOK

Imabari, Ehime in spring (April): expect mild conditions — pack for variable weather. Always check 7-day forecast race week and pack a packable shell.

PACING PLAYBOOK

01
Sector 1 — Opening Effort~25 km

Sit in. Let the start sort itself out. Pace by feel, not by rivals.

02
Sector 2 — Mid-Race Crux~60 km

Where the field shatters. Stick to your power numbers, not the surge.

03
Sector 3 — The Finishing Stretch100 km

Save one match. The last 20% is where placement is decided.

WHAT TO FEAR

  • [!01]Pacing mistakes — most issues here are self-inflicted

INSIDER INTEL

▌ INCOMING TRANSMISSION

Gravel Plus Shimanami brings a uniquely Asian perspective to gravel — different terrain, different weather, different culture. Worth the travel.

Regional cycling forum · Asia gravel scene

RACE LOGISTICS

AID STATIONSStandard food + drink refuel points.

Single mid-route aid station with water and snacks. Course is short enough that most riders don't need much.

▶ FEED ZONES · 2 AID STATIONS
Aid 1~33 km
waterfood
Aid 2~67 km
waterfood
✓ INCLUDED WITH ENTRY
  • +Timing chip + bib
  • +Course markings + GPX
  • +Aid station nutrition + water
✕ BRING YOUR OWN
  • -Spare tubes / tubeless plugs
  • -Lodging
  • -Drop bag transport (unless specified)
MECHANICS
At Aid
MEDICAL
At Aid
DROP BAGS
No
BAG TRANSPORT
No
▶ ACCOMMODATION · 2 OPTIONS
Hotels in Imabari
0-10 km from start

Book 6+ months ahead for big events. Check the race partner-hotel list for discounts.

Airbnb / Vrbo
Varies

Often the best value for groups. Search the wider race region, not just the start town.

▶ GOOD TO KNOW
  • Carry at least one tube + plug kit even with tubeless. Mechanical bad luck is the #1 DNF cause.

TRAVEL OPS

AIRPORTNRT / HND (Tokyo)
LODGINGBook early in Imabari — gravel events fill local accommodation fast
FOODCarry your own ride nutrition. Local options usually plentiful before/after.
PACKET PICKUPDay-before-event pickup is standard. Confirm via official site.
PARKINGEvent parking varies — check race FAQ
▌ BOTTOM LINE

Gravel Plus Shimanami is a quality asia event — great if you're nearby or want to explore the region.