Bikes of Bentang Jawa
Nine decisions, ridden 1,500 km across Java — this is how 107 bikes answered them
Pick a component to see how the field splits.
Rubber
Tyre width is on record for 84 of the 107 bikes in the 2025 field.
Java's 1,500 km is tarmac, broken tarmac, and the occasional excuse for a road. Tyre choice is where riders place their bet — and the field bets narrow.
Width
Most of the field runs 28–32 mm
84% of the widths given in millimetres
81 of 107 documented
| Category | Value |
|---|---|
| Verdict | Most of the field runs 28–32 mm |
| Figure | 84% of the widths given in millimetres |
| Bikes documented | 81 |
| Bikes counted | 107 |
| Share documented | 76% |
Tyre width
30–34 mm is the busiest bucket, on 54 of 84 bikes
Bikes per width bucket, 2025. The 28–32 mm cluster above falls across 2 of them — no single bucket contains it.
| Category | Value |
|---|---|
| 25–29 mm | 18 bikes (21%) — leading model GP5000 ×5 |
| 30–34 mm | 54 bikes (64%) — leading model GP5000 ×15 |
| 35–39 mm | 8 bikes (10%) — leading model Cinturato ×1 |
| 40–44 mm | 3 bikes (4%) |
| 45–50 mm | 1 bikes (1%) |
Tyre make
One in four rides a Continental GP5000
Top 5 tyre makes by count, each with its own leading models.
GP5000 23 · Ultra Sport 3 · Grand Sport 2 · +5
RideArmor 4 · Corsa N.EXT 3 · Rubino 2 · +4
GravelKing SS 3 · GravelKing 2 · Agilest Duro 1 · +3
Cinturato 1 · P Zero 1 · P Zero Road 1 · +4
Pro One 3 · all-round 1 · One 1
of 84 bikes naming make and model
| Make | Models |
|---|---|
| Continental | 34 bikes — GP5000 23, Ultra Sport 3, Grand Sport 2, +5 more |
| Vittoria | 14 bikes — RideArmor 4, Corsa N.EXT 3, Rubino 2, +4 more |
| Panaracer | 10 bikes — GravelKing SS 3, GravelKing 2, Agilest Duro 1, +3 more |
| Pirelli | 9 bikes — Cinturato 1, P Zero 1, P Zero Road 1, +4 more |
| Schwalbe | 6 bikes — Pro One 3, all-round 1, One 1 |
| Other makes | 11 bikes |
The Frames
Frame type is on record for 96 of the 107 bikes in the 2025 field; what the frame is made of, for 22.
Road bike or gravel bike? This edition has largely settled it: road bikes, outnumbering everything else put together two to one or better.
Frame type
Road bikes lead the field
71% road to 27% gravel
96 of 107 documented
| Category | Value |
|---|---|
| Verdict | Road bikes lead the field |
| Figure | 71% road to 27% gravel |
| Bikes documented | 96 |
| Bikes counted | 107 |
| Share documented | 90% |
Road versus gravel
Road and gravel split 71% to 27%
Frame type, 2025.
| Category | Value |
|---|---|
| road | 68 bikes (71%) |
| gravel | 26 bikes (27%) |
| folding | 1 bikes (1%) |
| mtb | 1 bikes (1%) |
Frame material
Recorded for 22 of 107 bikes — under half the field. Read what follows as a hint, not a verdict.
Frame material, where it is recorded
Of the 22 bikes that name a material. Shares are of those, not of the field.
| Category | Value |
|---|---|
| Carbon | 13 bikes (59%) |
| Aluminium | 4 bikes (18%) |
| Titanium | 3 bikes (14%) |
| Steel | 2 bikes (9%) |
The badge on the down tube
A make is on record for 98 of the 107 bikes in the 2025 field, across 41 different names.
Which badge is on the down tube is the one decision on a bike a rider can copy outright. What this section can say about it is decided entirely by the count above — how many of this edition's bikes named a make at all.
Most-ridden make
Specialized tops the start line
15 bikes, ahead of Cannondale on 10
98 of 107 documented
| Category | Value |
|---|---|
| Verdict | Specialized tops the start line |
| Figure | 15 bikes, ahead of Cannondale on 10 |
| Bikes documented | 98 |
| Bikes counted | 107 |
| Share documented | 92% |
Bikes per make
Specialized is the most common make, on 15% of bikes
Most common first. 41 makes are named in total — most of them by a single rider.
+29 more not shown
| Category | Value |
|---|---|
| Specialized | 15 bikes (15%) |
| Cannondale | 10 bikes (10%) |
| Trek | 8 bikes (8%) |
| Wdnsdy | 7 bikes (7%) |
| Cervelo | 6 bikes (6%) |
| Polygon | 4 bikes (4%) |
| Yoeleo | 4 bikes (4%) |
| BMC | 3 bikes (3%) |
| Colnago | 3 bikes (3%) |
| Canyon | 2 bikes (2%) |
| Cinelli | 2 bikes (2%) |
| Factor | 2 bikes (2%) |
| FARA | 2 bikes (2%) |
| Genio | 2 bikes (2%) |
| Giant | 2 bikes (2%) |
| All-City | 1 bikes (1%) |
| Basso | 1 bikes (1%) |
| Bike Friday | 1 bikes (1%) |
| Bombtrack | 1 bikes (1%) |
| Curve | 1 bikes (1%) |
| Element | 1 bikes (1%) |
| Elves | 1 bikes (1%) |
| Federal | 1 bikes (1%) |
| Liv | 1 bikes (1%) |
| Look | 1 bikes (1%) |
| Lynskey | 1 bikes (1%) |
| Marin | 1 bikes (1%) |
| Mosso | 1 bikes (1%) |
| OPEN | 1 bikes (1%) |
| Orbea | 1 bikes (1%) |
| Pardus | 1 bikes (1%) |
| Parlee | 1 bikes (1%) |
| Pinarello | 1 bikes (1%) |
| Pizz | 1 bikes (1%) |
| Ritchey | 1 bikes (1%) |
| SantaCruz | 1 bikes (1%) |
| Thrill | 1 bikes (1%) |
| Tsunami | 1 bikes (1%) |
| 1 bikes (1%) | |
| Vielo | 1 bikes (1%) |
| Wilier | 1 bikes (1%) |
| More | +29 more makes not shown in the chart above |
Where a frame was built is not something the record captures, so this section counts makes and stops there. The Indonesian-maker story the data can prove is stitched, not welded — it is in the bags.
The frames they brought
107 bikes, 83 different frames — almost every rider brought a different one
Grouped by make, largest first. Every make links to its bikes in the gallery.
- Roubaix Comp ×2 Road
- Tarmac SL6 ×2 Road
- Crux 10fr ×1 Gravel
- Diverge E5 ×1 Gravel
- Rockhopper ×1 MTB
- Roubaix SL8 ×1 Road
- S-Works Aethos ×1 Road
- S-Works SL6 ×1 Road
- S-Works Tarmac SL6 ×1 Road
- S-Works Tarmac SL7 ×1 Road
- S-Works Venge Vias Disc ×1 Road
- SL6 ×1
- Tarmac SL7 P/S edition ×1 Road
- SuperSix EVO ×6 Road
- SuperSix EVO Lab71 ×1 Road
- Topstone 4 ×1 Gravel
- Topstone 5 Carbon ×1 Gravel
- Topstone Carbon ×1 Gravel
- Emonda SLR ×2 Road
- 1000 ×1 Road
- Domane ×1 Road
- Domane SL5 ×1 Road
- Domane SL5 Gen 3 ×1 Road
- Emonda SL 2018 ×1 Road
- Emonda SL6 ×1 Road
- AJ5 ×3 Road
- AJ5 School of Suffering SE ×1 Road
- AJ5 simural ceria ×1 Road
- Journey ×1 Gravel
- Journey KS ×1 Gravel
- Caledonia 5 ×3 Road
- Caledonia ×2 Road
- Aspero ×1
- Heist 4 (2012) ×1
- Strattos S5D ×1 Road
- Strattos S7D ×1
- Tambora G8X ×1 Gravel
- R12 ×2 Road
- G21 ×1 Gravel
- R11 ×1 Road
- Grandfondo GF02 ×1 Road
- Roadmachine 01 Mod ×1 Road
- SLR01 ×1 Road
- G3-X ×2 Gravel
- C68 ×1
Show all 41 makes
- Endurace CF SL8 ×1 Road
- Grail AL 7.0 ×1 Gravel
- Superstar ×1 Road
- Vigorelli Road ×1 Road
- Ostro VAM ×1 Road
- Ostro VAM v2 ×1 Road
- All road ×1 Road
- All Road RAL5023 ×1 Road
- aerio R1 ×1
- Scappa Gen.1 ×1 Road
- TCR ×1 Road
- TCR Advanced 1 (2021) ×1 Road
- Cosmic Stallion ×1 Gravel
- Astra ×1 Road
- Pocket Rocket Pro ×1 Folding
- Hook EXT C ×1 Gravel
- Belgie Ultra ×1 Road
- GFNY Tulsa ×1
- Quendi ×1 Road
- Lady Pussy Cat SS ×1
- Langma Pro Disc 1 ×1 Road
- Huez 785 ×1 Road
- Pro GR ×1 Gravel
- Lombard 2 ×1 Gravel
- 730GVL ×1 Gravel
- UPPER ×1 Gravel
- Orca ×1 Road
- Supersport ×1 Road
- Chebacco XD ×1 Gravel
- Dogma X ×1 Road
- Carton Picker ×1
- Montebello ×1 Road
- Stigmata ×1 Gravel
- Covert ×1
- Seaboard GR02 ×1 Gravel
- Gravel V1 ×1 Gravel
- V+1 ×1 Gravel
- Triestina GTR Team Disc ×1 Road
98 of 107 name a model
| Make | Model | Count | Frame type |
|---|---|---|---|
| Specialized | Roubaix Comp | 2 | Road |
| Specialized | Tarmac SL6 | 2 | Road |
| Specialized | Crux 10fr | 1 | Gravel |
| Specialized | Diverge E5 | 1 | Gravel |
| Specialized | Rockhopper | 1 | MTB |
| Specialized | Roubaix SL8 | 1 | Road |
| Specialized | S-Works Aethos | 1 | Road |
| Specialized | S-Works SL6 | 1 | Road |
| Specialized | S-Works Tarmac SL6 | 1 | Road |
| Specialized | S-Works Tarmac SL7 | 1 | Road |
| Specialized | S-Works Venge Vias Disc | 1 | Road |
| Specialized | SL6 | 1 | — |
| Specialized | Tarmac SL7 P/S edition | 1 | Road |
| Cannondale | SuperSix EVO | 6 | Road |
| Cannondale | SuperSix EVO Lab71 | 1 | Road |
| Cannondale | Topstone 4 | 1 | Gravel |
| Cannondale | Topstone 5 Carbon | 1 | Gravel |
| Cannondale | Topstone Carbon | 1 | Gravel |
| Trek | Emonda SLR | 2 | Road |
| Trek | 1000 | 1 | Road |
| Trek | Domane | 1 | Road |
| Trek | Domane SL5 | 1 | Road |
| Trek | Domane SL5 Gen 3 | 1 | Road |
| Trek | Emonda SL 2018 | 1 | Road |
| Trek | Emonda SL6 | 1 | Road |
| Wdnsdy | AJ5 | 3 | Road |
| Wdnsdy | AJ5 School of Suffering SE | 1 | Road |
| Wdnsdy | AJ5 simural ceria | 1 | Road |
| Wdnsdy | Journey | 1 | Gravel |
| Wdnsdy | Journey KS | 1 | Gravel |
| Cervelo | Caledonia 5 | 3 | Road |
| Cervelo | Caledonia | 2 | Road |
| Cervelo | Aspero | 1 | — |
| Polygon | Heist 4 (2012) | 1 | — |
| Polygon | Strattos S5D | 1 | Road |
| Polygon | Strattos S7D | 1 | — |
| Polygon | Tambora G8X | 1 | Gravel |
| Yoeleo | R12 | 2 | Road |
| Yoeleo | G21 | 1 | Gravel |
| Yoeleo | R11 | 1 | Road |
| BMC | Grandfondo GF02 | 1 | Road |
| BMC | Roadmachine 01 Mod | 1 | Road |
| BMC | SLR01 | 1 | Road |
| Colnago | G3-X | 2 | Gravel |
| Colnago | C68 | 1 | — |
| Canyon | Endurace CF SL8 | 1 | Road |
| Canyon | Grail AL 7.0 | 1 | Gravel |
| Cinelli | Superstar | 1 | Road |
| Cinelli | Vigorelli Road | 1 | Road |
| Factor | Ostro VAM | 1 | Road |
| Factor | Ostro VAM v2 | 1 | Road |
| FARA | All road | 1 | Road |
| FARA | All Road RAL5023 | 1 | Road |
| Genio | aerio R1 | 1 | — |
| Genio | Scappa Gen.1 | 1 | Road |
| Giant | TCR | 1 | Road |
| Giant | TCR Advanced 1 (2021) | 1 | Road |
| All-City | Cosmic Stallion | 1 | Gravel |
| Basso | Astra | 1 | Road |
| Bike Friday | Pocket Rocket Pro | 1 | Folding |
| Bombtrack | Hook EXT C | 1 | Gravel |
| Curve | Belgie Ultra | 1 | Road |
| Element | GFNY Tulsa | 1 | — |
| Elves | Quendi | 1 | Road |
| Federal | Lady Pussy Cat SS | 1 | — |
| Liv | Langma Pro Disc 1 | 1 | Road |
| Look | Huez 785 | 1 | Road |
| Lynskey | Pro GR | 1 | Gravel |
| Marin | Lombard 2 | 1 | Gravel |
| Mosso | 730GVL | 1 | Gravel |
| OPEN | UPPER | 1 | Gravel |
| Orbea | Orca | 1 | Road |
| Pardus | Supersport | 1 | Road |
| Parlee | Chebacco XD | 1 | Gravel |
| Pinarello | Dogma X | 1 | Road |
| Pizz | Carton Picker | 1 | — |
| Ritchey | Montebello | 1 | Road |
| SantaCruz | Stigmata | 1 | Gravel |
| Thrill | Covert | 1 | — |
| Tsunami | Seaboard GR02 | 1 | Gravel |
| Gravel V1 | 1 | Gravel | |
| Vielo | V+1 | 1 | Gravel |
| Wilier | Triestina GTR Team Disc | 1 | Road |
Drivetrain
Chainring layout is on record for 71 of the 107 bikes in the 2025 field; the groupset itself, for 84.
16,000 metres of climbing is the whole argument. Gearing here is not about top speed — it is about still being able to turn the pedals on day five.
Chainrings
2× runs the field
85% of documented drivetrains
71 of 107 documented
| Category | Value |
|---|---|
| Verdict | 2× runs the field |
| Figure | 85% of documented drivetrains |
| Bikes documented | 71 |
| Bikes counted | 107 |
| Share documented | 66% |
One ring or two
2× setups run 85% of drivetrains
| Category | Value |
|---|---|
| 1× | 10 bikes (14%) |
| 2× | 60 bikes (85%) |
| fixed | 1 bikes (1%) |
Groupsets
84 of 107 name a groupset, and almost every one differs — 71 distinct entries. Shimano 105 repeats most, on 6.
Written more than once, all of them: Shimano 105 ×6, Shimano 105 Di2 ×2, Shimano 105 Di2 12-speed ×2, Shimano GRX ×2, Shimano GRX 810 ×2, Sram Force ×2, SRAM Force AXS ×2, SRAM Rival AXS ×3.
Shifting
Recorded for 41 of 107 bikes — under half the field. Read what follows as a hint, not a verdict.
Gearing
Recorded for 53 of 107 bikes — under half the field. Read what follows as a hint, not a verdict.
Mullet builds
12
bikes ran a mullet — road shifters driving an off-road derailleur and cassette (GRX, Deore, XT, XPLR). It is the cheapest way to buy a climbing gear a road groupset will not give you.
107 of 107 documented
Carrying it all
At least one bag is on record for 87 of the 107 bikes in the 2025 field.
This is where Bentang Jawa stops looking like every other ultra. Tailfin and Apidura are here, of course — but so are Bandung and Jakarta workshops stitching frame bags to order, one rider at a time.
Indonesian-made bags
Indonesian makers are on 34% of bagged bikes
7 local makers, 37 bikes
87 of 107 documented
| Category | Value |
|---|---|
| Verdict | Indonesian makers are on 34% of bagged bikes |
| Figure | 7 local makers, 37 bikes |
| Bikes documented | 87 |
| Bikes counted | 107 |
| Share documented | 81% |
Indonesian makers on the start line
Every local brand in the dataset, and how many bikes carried it.
URBNCASE
Carried on 17 bikes in the field
- bags
Satset
Carried on 15 bikes in the field
- bags
Wahaw Adventure
Carried on 6 bikes in the field
- bags
GXID
Carried on 2 bikes in the field
- bags
Boogie
Carried on 1 bike in the field
- bags
Eiger Adventure
Carried on 1 bike in the field
- bags
Green Forest
Carried on 1 bike in the field
- hydration
Local versus international
34% of bag-carrying bikes used an Indonesian maker
Counted per bike. A bike running both is counted in both columns.
| Category | Value |
|---|---|
| Indonesian makers | 37 bikes (34%) |
| International brands | 71 bikes (66%) |
Bag brands
Apidura is the most common bag brand, on 51% of bikes with bags recorded
Bikes per brand.
+5 more not shown
| Category | Value |
|---|---|
| Apidura | 44 bikes |
| URBNCASE | 17 bikes |
| Bontrager | 16 bikes |
| Satset | 15 bikes |
| Brooks England | 10 bikes |
| Rhinowalk | 10 bikes |
| Tailfin | 10 bikes |
| Topeak | 7 bikes |
| Wahaw Adventure | 6 bikes |
| FARA | 3 bikes |
| GXID | 2 bikes |
| Rapha | 2 bikes |
| Restrap | 2 bikes |
| Boogie | 1 bikes |
| Cycology | 1 bikes |
| Eiger Adventure | 1 bikes |
| Ulac | 1 bikes |
| More | +5 more not shown in the chart above |
Cockpit & contact points — what we know least
In the 2025 field, aero bars are on record for 107 of 107 bikes, saddles for 41 and pedals for 13.
Six days on a bike means the three places you touch it matter more than the frame does. It is also the part of a bike a caption describes least completely: the frame and the tyres get named almost every time, the saddle and pedals far less often.
Aero bars
Just over half ride on their elbows
54 of 107 recorded ran aero or rest bars
107 of 107 documented
| Category | Value |
|---|---|
| Verdict | Just over half ride on their elbows |
| Figure | 54 of 107 recorded ran aero or rest bars |
| Bikes documented | 107 |
| Bikes counted | 107 |
| Share documented | 100% |
Aero and rest bars
50% of documented cockpits carry aero or rest bars
Once a time-trial affectation, now a place to rest your elbows.
| Category | Value |
|---|---|
| aero bars | 54 bikes |
| no aero bars | 53 bikes |
Bar setup
Written out one bike at a time
64 bikes describe their bars
64 of 107 documented
| Category | Value |
|---|---|
| Verdict | Written out one bike at a time |
| Figure | 64 bikes describe their bars |
| Bikes documented | 64 |
| Bikes counted | 107 |
| Share documented | 60% |
Saddles
Recorded for 41 of 107 bikes — under half the field. Read what follows as a hint, not a verdict.
Pedals
Recorded for 13 of 107 bikes — under half the field. Read what follows as a hint, not a verdict.
The road these bikes crossed
West to east across Java, self-navigated and self-supported, solo or in pairs — this is what the field rode to close the distance.
Distance
1,500 kilometres
west → east
Climbing
16,000 metres
on the organiser’s profile
Cutoff
156 hours
≈ 6.5 days riding
Support
0 vehicles
fully self-supported
Line traced from bob aria bharuna's ride on RideWithGPS — a GPS-measured 1,502 km with 17,365 m of climbing. That's a separate, equally valid measurement from the race facts above, not a correction to them; those are the organiser's, from bentangjawa.cc.