Trek · Mid-drive · limited stock

Trek FX+ 7S: real range, hills and charging

A 180 lb rider on the Trek FX+ 7S at 16 mph with relaxed pedaling over rolling hills (±2%) on pavement can expect about 25 miles per charge (20–30 mi), using 13.1 Wh per mile. That is 33% of the brand's 75 mi claim. That is about 33% of the claim. At full assist with almost no pedaling over hills it drops to about 16 miles. For less money, the Ride1Up Prodigy v2 ECO ($1,295) goes about 32 miles in the same riding.

$3,200

at Trek · checked 2026-11-11

Check price at Trek →

See the Ride1Up Prodigy v2 ECO range · Check price at Ride1Up

Photo: Trek

Price at Trek $3,200

$4,000

360

Wh battery

250

W motor

mph max

Check price at Trek → Simulate your ride on this bike

Price checked 2026-11-11. We may earn a commission.

How far does the Trek FX+ 7S go for your weight?

Miles per full charge on a new battery at 70°F on pavement, no wind. Each number is the middle of a ±20% band. Trek claims 50–75 miles ('up to 50 mi'; up to 75 mi in eco mode with the optional 160 wh range extender).

Rider weight	Easy 12 mph	Everyday 16 mph	Fast 20 mph	Full assist, hills
150 lb	48 mi (38–57)	27 mi (22–32)	18 mi (14–21)	18 mi (14–21)
200 lb	42 mi (34–51)	23 mi (19–28)	17 mi (14–20)	15 mi (12–18)
250 lb	38 mi (31–46)	21 mi (17–25)	16 mi (13–19)	13 mi (11–16)
300 lbover max load	35 mi (28–42)	19 mi (15–22)	16 mi (12–19)	12 mi (9–14)

Easy 12 mph: 12 mph, relaxed pedaling, flat
Everyday 16 mph: 16 mph, relaxed pedaling, rolling hills
Fast 20 mph: 20 mph, relaxed pedaling, rolling hills
Throttle, hills: 15 mph, no pedaling, hilly

Independent range tests

Reviewers rode the FX+ 7S until the battery died. Our model, run in the same conditions (180 lb rider assumed; testers don't publish weight), is shown next to each result.

lowest assist

39.23 mi

measured by Electric Bike Report · 9.2 Wh/mi

Our model: 32 mi (25–38) outside band

Speeds near 20 mph path limit; 9 Wh/mi

highest assist

18.78 mi

measured by Electric Bike Report · 19.2 Wh/mi

Our model: 21 mi (17–25) within band

18 Wh/mi

Can the Trek FX+ 7S climb hills?

Highest steady speed on each grade, motor at its 300 W peak. A 10% grade is a steep city street; 15% is a hard hill.

Rider	5% grade	10% grade	15% grade
180 lb, full assist	8 mph	5 mph	3 mph
180 lb, pedaling	11 mph	6 mph	4 mph
250 lb, full assist	7 mph	4 mph	stalls
250 lb, pedaling	9 mph	5 mph	3 mph

Steepest grade at 8 mph (180 lb): 5% on throttle, 8% with moderate pedaling. Peak power lasts for short hills; on long climbs motors fall back toward their 250 W nominal rating.

Charging time and cost

Empty to full (4 A)

2 h 49 min

Charger

4 A

Cost per full charge

$0.08

Cost per mile

0.28¢

US average residential electricity, 18.31¢/kWh (EIA, July 2026), 85% charger efficiency. Charge time: constant current to ~85%, then about an hour of top-off.

Range in cold weather

70°F

mi · 100% cap.

50°F

mi · 94% cap.

32°F

mi · 85% cap.

20°F

mi · 75% cap.

Everyday scenario, 180 lb rider. Capacity loss is temporary; store and charge the battery indoors and never charge it below freezing.

Simulate your own ride on the FX+ 7S

E-bike

360 Wh250 W28 mph max41.1 lbFull specs →

Rider weight180 lb

Cargo0 lb

Average speed16 mph

How you ride

Terrain

Weather, surface & battery age70°F · no wind · paved · new battery

Temperature70°F

Headwind0 mph

Battery health100%

About 80% after ~800 full charges

Surface

Estimated range

Trek FX+ 7S

25miles

likely 20–30 mi · 13.1 Wh/mi · 1h 33m of riding

0 miBrand claim: 75 mi (33% of it)

Cost / mile

0.28¢

$0.08 per full charge

Full charge

2h 49m

4 A charger

Steepest hill

at 8 mph, motor peak

Usable energy

324 Wh

of 360 Wh rated

Speed

16 mph

average, moving

Ride time

1h 33m

until empty

Same ride, different pedaling

Throttle only

21 mi

Relaxed pedaling

25 mi

Moderate pedaling

29 mi

Hard pedaling

35 mi

The climbs need more than the motor's peak power at this speed; expect to slow down.

Open full simulator

Trek FX+ 7S specs

From the Trek product page, checked 2026-11-11. est. marks values Trek doesn't confirm.

Price: $3,200 (list $4,000)

Source note

Closeout sale price (model year 2025) on $3,999.99 list; sizes S-XL, Dark Star Matte and Lichen Green; FX+ 7S Midstep also $3,999.99 list Trek shows this 2025 model with a closeout badge; no 2026 FX+ 7S was listed on the US site on 2026-11-11. trekbikes.com
Class: Class 3, no throttle

Source note

trekbikes.com
Top assisted speed: 28 mph

Source note

trekbikes.com
Battery: 360 Wh (36 V), dual-battery option

Source note

TQ internal battery; volts not stated by Trek (36 V assumed). Electric Bike Report describes it as dealer-removable; optional 160 Wh TQ Range Extender trekbikes.com
Motor: 250 W nominal, 300 W peak, mid-drive

Source note

TQ HPR50 mid-drive trekbikes.com
Torque: 50 Nm

Source note

trekbikes.com
Pedal sensor: Torque
Claimed range: 50–75 mi ('Up to 50 mi'; up to 75 mi in Eco mode with the optional 160 Wh Range Extender)

Source note

trekbikes.com
Weight: 41.1 lb with battery

Source note

Size M, 18.65 kg; Electric Bike Report measured 42.6 lb (L) trekbikes.com
Max load: 258 lb rider + cargo

Source note

Derived: 300 lb max total weight (bike + rider + cargo) minus 41.1 lb bike; rear rack 55 lb per Electric Bike Report trekbikes.com
Wheels & tires: 28" × 1.57"
Frame: Aluminum diamond frame (Alpha Platinum per Electric Bike Report), rigid carbon fork, 700x40 mm tires; integrated lights, fenders, MIK rear rack, Shimano CUES 10-speed
Charger: 4 A est.

Source note

Trek does not state charger amperage; Electric Bike Report lists a TQ 4A charger electricbikereport.com
Safety certification: UL 2849

Common questions

What is the weight limit of the Trek FX+ 7S?

Trek rates the FX+ 7S for 258 lb total (rider plus cargo). At 250 lb it still goes about 21 miles in everyday riding.

Can the Trek FX+ 7S climb steep hills?

On throttle alone, with a 180 lb rider, it can hold 8 mph up a grade of about 5% (our estimate from its 300 W peak power). With moderate pedaling, about 8%. On a 10% hill it holds about 5 mph on throttle.

How long does the Trek FX+ 7S take to charge?

About 2 h 49 min from empty with the 4 A charger. A full charge costs about $0.08 at the US average of 18.31¢/kWh, or 0.28¢ per mile.

Is the Trek FX+ 7S a Class 2 or Class 3 e-bike?

Trek lists it as Class 3, with a top assisted speed of 28 mph and no throttle. Class 3 speeds (up to 28 mph) are limited to pedal assist; on throttle, Class 2 rules cap it at 20 mph.

Which hitch racks fit the FX+ 7S?

At 41.1 lb with battery and 1.57" tires, 23 of 23 hitch racks we track can carry it.

Kuat Piston ION 2-bike	100 lb/bike	Fits
1UP USA Super Duty Double	100 lb/bike	Fits
Saris MHS 2 Bike Package	100 lb/bike	Fits
Aventon Hitch Rack Pro	85 lb/bike	Fits
Yakima OnRamp LX	80 lb/bike	Fits
Hollywood Racks Sport Rider for Electric Bikes	80 lb/bike	Fits
Hollywood Racks RV Rider E-Bike Rack	80 lb/bike	Fits
Aventon Hitch Rack	77 lb/bike	Fits
Thule Epos 2-bike	75 lb/bike	Fits
Yakima StageTwo	70 lb/bike	Fits
Hollywood Racks Destination E	70 lb/bike	Fits
Allen Sports High Capacity Locking Premier for Electric Bikes	70 lb/bike	Fits
Kuat Piston Pro X 2-bike	67 lb/bike	Fits
Yakima OnRamp	66 lb/bike	Fits
Thule EasyFold XT 2	65 lb/bike	Fits
1UP USA Heavy Duty Double	65 lb/bike	Fits
Thule T2 Pro XTR 2-bike	60 lb/bike	Fits
Kuat NV 2.0 2-bike	60 lb/bike	Fits
Kuat NV Base 2.0 2-bike	60 lb/bike	Fits
Saris Door County 2-Bike Motorized	60 lb/bike	Fits
Saris SuperClamp G4 2-Bike	60 lb/bike	Fits
Hollywood Racks Sport Rider SE2	50 lb/bike	Fits
Saris Freedom G2 2-Bike	45 lb/bike	Fits