Trek Bike Size Chart
Size chart and fit guide for 2026
Trek uses a combination of traditional frame sizing with their Alpha Fit system, focusing on stack and reach measurements to help riders find the optimal position. They offer a wide range of frame sizes and geometries to accommodate different body types and riding styles.
Trek Size Charts by Category
Trek Road Bike Size Chart
| Size | Height Range | Inseam Range |
|---|---|---|
| 47 | 4'12" - 5'3"(152 - 160 cm) | 27.2" - 28.7"(69 - 73 cm) |
| 50 | 5'2" - 5'5"(158 - 165 cm) | 28.3" - 29.9"(72 - 76 cm) |
| 52 | 5'4" - 5'7"(163 - 170 cm) | 29.5" - 31.1"(75 - 79 cm) |
| 54 | 5'6" - 5'9"(168 - 175 cm) | 30.7" - 32.3"(78 - 82 cm) |
| 56 | 5'8" - 5'11"(173 - 180 cm) | 31.9" - 33.5"(81 - 85 cm) |
| 58 | 5'10" - 6'1"(178 - 185 cm) | 33.1" - 34.6"(84 - 88 cm) |
| 60 | 6'0" - 6'3"(183 - 191 cm) | 34.3" - 36.2"(87 - 92 cm) |
| 62 | 6'2" - 6'6"(188 - 198 cm) | 35.4" - 37.4"(90 - 95 cm) |
47
Height: 4'12" – 5'3" (152–160 cm)
Inseam: 27.2" – 28.7" (69–73 cm)
50
Height: 5'2" – 5'5" (158–165 cm)
Inseam: 28.3" – 29.9" (72–76 cm)
52
Height: 5'4" – 5'7" (163–170 cm)
Inseam: 29.5" – 31.1" (75–79 cm)
54
Height: 5'6" – 5'9" (168–175 cm)
Inseam: 30.7" – 32.3" (78–82 cm)
56
Height: 5'8" – 5'11" (173–180 cm)
Inseam: 31.9" – 33.5" (81–85 cm)
58
Height: 5'10" – 6'1" (178–185 cm)
Inseam: 33.1" – 34.6" (84–88 cm)
60
Height: 6'0" – 6'3" (183–191 cm)
Inseam: 34.3" – 36.2" (87–92 cm)
62
Height: 6'2" – 6'6" (188–198 cm)
Inseam: 35.4" – 37.4" (90–95 cm)
Trek Mountain Bike Size Chart
| Size | Height Range | Inseam Range |
|---|---|---|
| XS | 4'10" - 5'1"(147 - 155 cm) | 26.0" - 28.0"(66 - 71 cm) |
| S | 5'0" - 5'5"(153 - 165 cm) | 27.2" - 29.9"(69 - 76 cm) |
| M | 5'4" - 5'9"(163 - 175 cm) | 29.5" - 31.9"(75 - 81 cm) |
| M/L | 5'8" - 6'0"(173 - 183 cm) | 31.1" - 33.1"(79 - 84 cm) |
| L | 5'10" - 6'2"(178 - 188 cm) | 32.3" - 34.3"(82 - 87 cm) |
| XL | 6'1" - 6'5"(185 - 196 cm) | 33.9" - 36.2"(86 - 92 cm) |
XS
Height: 4'10" – 5'1" (147–155 cm)
Inseam: 26.0" – 28.0" (66–71 cm)
S
Height: 5'0" – 5'5" (153–165 cm)
Inseam: 27.2" – 29.9" (69–76 cm)
M
Height: 5'4" – 5'9" (163–175 cm)
Inseam: 29.5" – 31.9" (75–81 cm)
M/L
Height: 5'8" – 6'0" (173–183 cm)
Inseam: 31.1" – 33.1" (79–84 cm)
L
Height: 5'10" – 6'2" (178–188 cm)
Inseam: 32.3" – 34.3" (82–87 cm)
XL
Height: 6'1" – 6'5" (185–196 cm)
Inseam: 33.9" – 36.2" (86–92 cm)
Trek Hybrid Bike Size Chart
| Size | Height Range | Inseam Range |
|---|---|---|
| XS | 4'10" - 5'1"(147 - 155 cm) | 26.0" - 28.0"(66 - 71 cm) |
| S | 5'0" - 5'5"(153 - 165 cm) | 27.2" - 29.9"(69 - 76 cm) |
| M | 5'4" - 5'9"(163 - 175 cm) | 29.5" - 31.9"(75 - 81 cm) |
| L | 5'8" - 6'1"(173 - 185 cm) | 31.1" - 33.9"(79 - 86 cm) |
| XL | 6'0" - 6'5"(183 - 196 cm) | 33.5" - 36.2"(85 - 92 cm) |
XS
Height: 4'10" – 5'1" (147–155 cm)
Inseam: 26.0" – 28.0" (66–71 cm)
S
Height: 5'0" – 5'5" (153–165 cm)
Inseam: 27.2" – 29.9" (69–76 cm)
M
Height: 5'4" – 5'9" (163–175 cm)
Inseam: 29.5" – 31.9" (75–81 cm)
L
Height: 5'8" – 6'1" (173–185 cm)
Inseam: 31.1" – 33.9" (79–86 cm)
XL
Height: 6'0" – 6'5" (183–196 cm)
Inseam: 33.5" – 36.2" (85–92 cm)
Trek Gravel Bike Size Chart
| Size | Height Range | Inseam Range |
|---|---|---|
| 49 | 5'1" - 5'4"(155 - 163 cm) | 28.0" - 29.5"(71 - 75 cm) |
| 52 | 5'3" - 5'6"(160 - 168 cm) | 29.1" - 30.7"(74 - 78 cm) |
| 54 | 5'5" - 5'8"(165 - 173 cm) | 30.3" - 31.9"(77 - 81 cm) |
| 56 | 5'7" - 5'11"(170 - 180 cm) | 31.5" - 33.1"(80 - 84 cm) |
| 58 | 5'10" - 6'1"(178 - 186 cm) | 32.7" - 34.3"(83 - 87 cm) |
| 61 | 6'0" - 6'5"(183 - 196 cm) | 33.9" - 36.2"(86 - 92 cm) |
49
Height: 5'1" – 5'4" (155–163 cm)
Inseam: 28.0" – 29.5" (71–75 cm)
52
Height: 5'3" – 5'6" (160–168 cm)
Inseam: 29.1" – 30.7" (74–78 cm)
54
Height: 5'5" – 5'8" (165–173 cm)
Inseam: 30.3" – 31.9" (77–81 cm)
56
Height: 5'7" – 5'11" (170–180 cm)
Inseam: 31.5" – 33.1" (80–84 cm)
58
Height: 5'10" – 6'1" (178–186 cm)
Inseam: 32.7" – 34.3" (83–87 cm)
61
Height: 6'0" – 6'5" (183–196 cm)
Inseam: 33.9" – 36.2" (86–92 cm)
Trek E-Bike Size Chart
| Size | Height Range | Inseam Range |
|---|---|---|
| S | 5'1" - 5'6"(155 - 167 cm) | 28.0" - 30.3"(71 - 77 cm) |
| M | 5'5" - 5'10"(165 - 177 cm) | 29.9" - 32.3"(76 - 82 cm) |
| L | 5'9" - 6'2"(175 - 188 cm) | 31.9" - 34.3"(81 - 87 cm) |
| XL | 6'1" - 6'6"(186 - 198 cm) | 33.9" - 36.6"(86 - 93 cm) |
S
Height: 5'1" – 5'6" (155–167 cm)
Inseam: 28.0" – 30.3" (71–77 cm)
M
Height: 5'5" – 5'10" (165–177 cm)
Inseam: 29.9" – 32.3" (76–82 cm)
L
Height: 5'9" – 6'2" (175–188 cm)
Inseam: 31.9" – 34.3" (81–87 cm)
XL
Height: 6'1" – 6'6" (186–198 cm)
Inseam: 33.9" – 36.6" (86–93 cm)
Popular Trek Models & Sizing Notes
Specific sizing recommendations for Trek's most popular bike models. Geometry measurements shown for reference size (typically M or 54cm).
Domane SL 5
🚴 Road Bike • 2024Endurance geometry with taller stack height. Riders seeking comfort may prefer sizing up if between sizes.
Stack: 571mmReach: 380mm
Émonda SL 6
🚴 Road Bike • 2024Lightweight climbing bike with more aggressive fit. Consider sizing down for a racier position.
Stack: 545mmReach: 385mm
Fuel EX 8
🚵 Mountain Bike • 2024Trail bike with 140mm travel. Modern long-low-slack geometry means many riders size down from previous Trek MTBs.
Stack: 618mmReach: 460mm
Checkpoint SL 5
🏔️ Gravel Bike • 2024Versatile gravel bike with stable geometry. IsoSpeed decoupler adds comfort without affecting fit.
Stack: 584mmReach: 378mm
FX 3 Disc
🚲 Hybrid Bike • 2024Flat-bar fitness hybrid with Trek's IsoZone handlebar and grips that reduce road vibration. The fitness-oriented geometry sits between a road bike and a comfort hybrid, with a moderate stack-to-reach ratio. Riders between sizes should size down for a sportier commuting position or size up for a more upright recreational ride-the adjustable stem allows 10-15 mm of reach fine-tuning.
Stack: 605mmReach: 395mm
Domane+ SL
⚡ E-Bike • 2025Lightweight e-road bike with TQ HPR50 motor and integrated 360Wh battery. Endurance geometry mirrors the acoustic Domane closely-riders familiar with their Domane size should choose the same frame size in the Domane+ SL.
Stack: 576mmReach: 382mm
Rail 9.7
⚡ E-Bike • 2025Full-suspension e-MTB with Bosch Performance CX motor and 750Wh battery. Long-reach modern geometry with 150mm travel-riders between sizes should consider the smaller frame for more agile trail handling.
Stack: 625mmReach: 470mm
Verve+ 3
⚡ E-Bike • 2025Comfort-focused e-hybrid with Bosch Active Line Plus motor and 500Wh battery. The upright riding position and low standover height make this ideal for riders prioritizing easy mounting and a relaxed posture. Available in traditional and lowstep frames-the lowstep reduces standover by approximately 100 mm. Riders should prioritize comfortable reach to the grips over frame size numbers, as the swept-back handlebar shortens effective reach compared to flat-bar hybrids.
Stack: 640mmReach: 400mm
Trek Sizing Tips
How to Measure
- • Height: Stand barefoot against a wall and measure from floor to top of head
- • Inseam: Stand with feet 6 inches apart, measure from floor to crotch
- • Arm Reach: For road bikes, measure from shoulder to fingertips
When Between Sizes
- • Comfort priority: Choose the larger size
- • Performance priority: Choose the smaller size
- • Long torso: Size up for better reach
- • Long legs: Size down for better standover
Trek Sizing FAQ
Accessories for Trek bikes
Helmets, saddles, lights and locks that fit any Trek build.
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Bell
Bell Nomad 2 MIPS
This ASIN is Small/Medium 52-57 cm. Check the selected Amazon size/color before checkout.
$84.954.5
View on Amazon
Avasta
AVASTA Kids Bicycle Saddle
Standard saddle rail spacing fits most kids' seatpost clamps. Designed primarily for 12-20" wheel kids' bikes; larger riders may prefer a wider adult saddle.
$20.994.7
View on Amazon
Bell
Bell Lumina 300 Headlight
Tool-free handlebar mount; check bar space around computers, bells, and baskets.
$16.984.3
View on Amazon
Abus
ABUS Granit X-Plus 540
Inner dimensions: 5.5" x 8" (14 x 20cm). Premium size for frame + wheel security. Heavy-duty for high-theft areas.
$159.00
View on Amazon
Camelbak
CamelBak Podium Chill 21oz
Standard 73mm bottle diameter. Optimized cage fit for most bike bottle cages.
$13-184.6
View on Amazon
Giro
Giro Register MIPS
S 51-55 cm, M 55-59 cm, L 59-63 cm
$83.194.7
View on Amazon
Trek Comparisons & Guides
Compare Trek Bikes
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10 Year Olds Sizing Guide
See why Trek is a great fit for 10 Year Olds
11 Year Olds Sizing GuideSee why Trek is a great fit for 11 Year Olds
12 Year Olds Sizing GuideSee why Trek is a great fit for 12 Year Olds
3 Year Olds Sizing GuideSee why Trek is a great fit for 3 Year Olds
4 Year Olds Sizing GuideSee why Trek is a great fit for 4 Year Olds
5 Year Olds Sizing GuideSee why Trek is a great fit for 5 Year Olds
Find Your Trek Size
Use our free calculators and guides to determine your ideal Trek frame size.
Road Bike Calculator
Calculate your Trek road bike size
Mountain Bike Calculator
Find your ideal MTB frame size
General Calculator
Universal bike sizing tool
Saddle Size Calculator
Find your ideal saddle width
Continue Reading
Kids Bike Size Guide 2026
Age & height charts, wheel sizes, and safety tips
Saddle Comfort Tips
Solve discomfort with proper saddle selection and positioning
How to Choose the Right Bike Size
Frame size, standover height, and reach explained
Complete Bike Fitting Guide
Dial in saddle height, reach, and handlebar position