Rad Power Bikes · Cargo & utility
Rad Power Bikes RadRunner: real range, hills and charging
A 180 lb rider on the Rad Power Bikes RadRunner at 16 mph with relaxed pedaling over rolling hills (±2%) on pavement can expect about 36 miles per charge (29–43 mi), using 15.6 Wh per mile. The brand claims up to 55 miles. That is about 65% of the claim. On throttle only over hills it drops to about 25 miles.
624
Wh battery
750
W motor
20
mph max
Price checked 2026-10-20. We may earn a commission.
How far does the Rad Power Bikes RadRunner 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. Rad Power Bikes claims 17–55 miles (estimated 17-55+ miles per charge; no conditions stated).
| Rider weight | Easy 12 mph | Everyday 16 mph | Fast 20 mph | Throttle, hills |
|---|---|---|---|---|
| 150 lb | 61 mi (49–73) | 38 mi (30–45) | 25 mi (20–31) | 27 mi (22–33) |
| 200 lb | 55 mi (44–66) | 35 mi (28–42) | 24 mi (19–29) | 24 mi (19–28) |
| 250 lb | 50 mi (40–60) | 32 mi (25–38) | 23 mi (19–28) | 21 mi (17–25) |
| 300 lb | 45 mi (36–54) | 29 mi (23–35) | 22 mi (18–27) | 19 mi (15–22) |
- 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
Can the Rad Power Bikes RadRunner climb hills?
Highest steady speed on each grade, motor at an estimated 1,200 W peak, limited by its 60 Nm of torque. A 10% grade is a steep city street; 15% is a hard hill.
| Rider | 5% grade | 10% grade | 15% grade |
|---|---|---|---|
| 180 lb, throttle | 20 mph | 14 mph | 10 mph |
| 180 lb, pedaling | 20 mph | 15 mph | 11 mph |
| 250 lb, throttle | 19 mph | 11 mph | 8 mph |
| 250 lb, pedaling | 20 mph | 12 mph | 9 mph |
Steepest grade at 8 mph (180 lb): 19% on throttle, 22% with moderate pedaling. Peak power lasts for short hills; on long climbs motors fall back toward their 750 W nominal rating.
Charging time and cost
Empty to full (2 A)
5 h 51 min
With a 5 A charger
2 h 57 min
Cost per full charge
$0.13
Cost per mile
0.34¢
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
36
mi · 100% cap.
50°F
33
mi · 94% cap.
32°F
29
mi · 85% cap.
20°F
25
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 RadRunner
Rad Power Bikes RadRunner specs
From the Rad Power Bikes product page, checked 2026-10-20. est. marks values Rad Power Bikes doesn't confirm.
- Price
- $1,499
- Class
- Class 2, throttle
- Top assisted speed
- 20 mph
- Battery
- 624 Wh (48 V × 13 Ah), removable
- Motor
- 750 W nominal, rear hub
Source note
Rad: stated wattage is rated capacity; actual power-to-ground is under 750W
- Torque
- 60 Nm
Source note
Spec table says 60 Nm; product description and feature text say 65 Nm
- Pedal sensor
- Cadence
- Claimed range
- 17–55 mi (Estimated 17-55+ miles per charge; no conditions stated)
- Weight
- 65 lb with battery
Source note
55 lb without battery
- Max load
- 320 lb rider + cargo
Source note
275 lb max rider; rear rack 120 lb
- Wheels & tires
- 20" × 3.3"
- Frame
- Aluminum step-thru utility, rigid steel fork, single speed, moped-style saddle; 20x3.3 tires
- Charger
- 2 A
- Safety certification
- UL 2849 (e-bike system) + UL 2271 (battery)
Common questions
What is the weight limit of the Rad Power Bikes RadRunner?
Rad Power Bikes rates the RadRunner for 320 lb total (rider plus cargo). At 300 lb it still goes about 29 miles in everyday riding.
Can the Rad Power Bikes RadRunner climb steep hills?
On throttle alone, with a 180 lb rider, it can hold 8 mph up a grade of about 19% (our estimate from its 1200 W estimated peak power and 60 Nm). With moderate pedaling, about 22%. On a 10% hill it holds about 14 mph on throttle.
How long does the Rad Power Bikes RadRunner take to charge?
About 5 h 51 min from empty with the 2 A charger, or about 2 h 57 min with a 5 A fast charger. A full charge costs about $0.13 at the US average of 18.31¢/kWh, or 0.34¢ per mile.
Is the Rad Power Bikes RadRunner a Class 2 or Class 3 e-bike?
Rad Power Bikes lists it as Class 2, with a top assisted speed of 20 mph and a throttle.
Which hitch racks fit the RadRunner?
At 65 lb with battery (about 58 lb without it) and 3.3" tires, 16 of 23 hitch racks we track can carry it (some only with the battery removed).
| 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 |
| 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 |
| Thule T2 Pro XTR 2-bike | 60 lb/bike | Fits with battery removed |
| Kuat NV 2.0 2-bike | 60 lb/bike | Fits with battery removed |
| Kuat NV Base 2.0 2-bike | 60 lb/bike | Fits with battery removed |
| Saris SuperClamp G4 2-Bike | 60 lb/bike | Fits with battery removed |
Doesn't fit: Thule Epos 2-bike (tires too wide), Yakima OnRamp (tires too wide), Thule EasyFold XT 2 (tires too wide), 1UP USA Heavy Duty Double (tires too wide), Saris Door County 2-Bike Motorized (tires too wide), Hollywood Racks Sport Rider SE2 (tires too wide), Saris Freedom G2 2-Bike (tires too wide).
All hitch racks →
