Li-Ning Chaoying Pro vs R.A.D SYNTH: Which Running Shoe Is Better?

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Products

Tested using Methodology v0.13

Updated Jun 30, 2026 08:31 PM

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R.A.D

Tested using Methodology v0.13

Updated Jul 07, 2026 05:10 PM

This review is in Early access

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Amazon

Weight 231.1 g (8.15 oz)

Heel-To-Toe Drop 6.0 mm

Plate None

Weight 222.5 g (7.85 oz)

Heel-To-Toe Drop 10.1 mm

Plate None

Our Verdict

R.A.D SYNTH

Li-Ning Chaoying Pro

Full comparison details regarding individual product score sets can be found in the section below

Variants

SYNTH (Acid Green - (Men - US 9))
SYNTH (Fuchsia Flash - (Women - US 7))

Chaoying Pro (Crystal Gray/Silver - (Women - US 7))
Chaoying Pro (Dim Twilight Blue/Standard White/Lilac Breeze - (Women - US 7))

Review

See R.A.D SYNTH Review

See Li-Ning Chaoying Pro Review

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Amazon

Walmart.com

Main Differences for

Half/Full Marathon Racing

Threshold

0.10

Half/Full Marathon Racing

7.4

0.0

No major differences between these running shoes for half/full marathon racing. See full list of tests below.

Full Comparison

Half/Full Marathon Racing

7.4

0.0

5K/10K Racing

7.2

0.0

Long Run

7.4

0.0

Daily Training

7.9

0.0

Energy Return

6.0

0.0

Responsiveness

6.5

0.0

Cushioning

7.6

0.0

True To Size

9.4

0.0

Stability

7.9

0.0

Design

Weight

7.1

N/A

Right Shoe Weight Photo

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Left Shoe Weight Photo

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Weight

231.1 g (8.15 oz)

Lock g (Lock oz)

Stack Heights

Stack Height Photo

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Heel Stack Height

37.7 mm

Lock mm

Forefoot Stack Height

30.3 mm

Lock mm

Heel-To-Toe Drop

6.0 mm

Lock mm

Advertised Heel-To-Toe Drop

7.4 mm

Lock mm

External Shape

3D Model Full Shoe

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Outsole Heel Width

87 mm (3.4")

Lock mm (Lock")

Outsole Arch Width

71 mm (2.8")

Lock mm (Lock")

Outsole Forefoot Width

113 mm (4.4")

Lock mm (Lock")

Heel Width-To-Stack Ratio

2.30

Lock

Forefoot Width-To-Stack Ratio

3.72

Lock

Internal Shape

3D Model Internal

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Internal Length

271 mm (10.7")

Lock mm (Lock")

Internal Heel Width

62 mm (2.4")

Lock mm (Lock")

Internal Forefoot Width

90 mm (3.5")

Lock mm (Lock")

Wide Sizing Available

Locked

Forefoot Fit: Width

9.4

N/A

Forefoot Width Photo

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Ball-Of-Foot TTS Deviation

0.3 mm (0.012")

Lock mm (Lock")

Toe TTS Deviation

-3.0 mm (-0.117")

Lock mm (Lock")

Forefoot Fit: Height

5.3

N/A

Forefoot Height Photo

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Toe TTS Deviation

-5.6 mm (-0.220")

Lock mm (Lock")

Arch Fit: Width

9.0

N/A

Arch Fit Photo

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Arch Width TTS Deviation

-1.9 mm (-0.075")

Lock mm (Lock")

Length Fit

N/A

Toe Clearance Photo

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Heel Rocker Geometry

7.3

N/A

Heel Rocker Photo

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Heel Spring

23 mm (0.9")

Lock mm (Lock")

Heel Apex Position

24.9%

Lock%

Heel Rocker Angle

17.3°

Lock°

Forefoot Rocker Geometry

6.5

N/A

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Toe Spring

45 mm (1.8")

Lock mm (Lock")

Toe Apex Position

63.0%

Lock%

Forefoot Rocker Angle

22.2°

Lock°

Foam

Primary Foam Picture

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Secondary Foam Picture

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Primary Foam Name

SwellFoam

Locked

Primary Foam Type

TPEE + EVA

Locked

Secondary Foam Name

N/A

Secondary Foam Type

N/A

Other Features

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Tongue Gusset Type

Fully-gusseted

Locked

Plate

None

Locked

Performance

Heel Compression Energy Return

4.2

N/A

Heel Compression Video

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Heel Energy Return

Preview Graph

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Heel Energy Return

70.8%

Lock%

Forefoot Compression Energy Return

6.7

N/A

Forefoot Compression Video

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Forefoot Energy Return

Preview Graph

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Forefoot Energy Return

75.2%

Lock%

Heel Cushioning

7.5

N/A

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Heel Cushioning

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Energy Absorbed At 550N

3.44 J

Lock J

Energy Absorbed At 1100N

9.09 J

Lock J

Energy Absorbed At 1900N

15.53 J

Lock J

Forefoot Cushioning

7.7

N/A

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Forefoot Cushioning

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Energy Absorbed At 800N

4.65 J

Lock J

Energy Absorbed At 1300N

8.30 J

Lock J

Energy Absorbed At 2050N

12.35 J

Lock J

Heel Firmness

8.2

N/A

Heel Firmness Graph

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Firmness At 550N

44.8 N/mm

Lock N/mm

Firmness At 1100N

56.6 N/mm

Lock N/mm

Firmness At 1900N

79.5 N/mm

Lock N/mm

Forefoot Firmness

8.5

N/A

Forefoot Firmness Graph

Preview Graph

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Firmness At 800N

61.7 N/mm

Lock N/mm

Firmness At 1300N

78.5 N/mm

Lock N/mm

Firmness At 2050N

108 N/mm

Lock N/mm

Forefoot Long Run Cushioning

7.0

N/A

Forefoot Long Run Cushioning

Preview Graph

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Energy Absorbed At 10km

7.70 J

Lock J

Energy Absorbed At 20km

7.48 J

Lock J

Energy Absorbed At 30km

7.32 J

Lock J

Energy Absorbed At 40km

7.20 J

Lock J

Rocker Stiffness

6.5

N/A

Forefoot Rocker Stiffness Video

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Forefoot Rocker Stiffness Graph

Preview Graph

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Force To Flatten The Rocker

71 N

Lock N

Forefoot Bending Energy Return

6.1

N/A

Forefoot Bending Video

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Forefoot Bending Energy Return

Preview Graph

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Forefoot Bending Energy Return

60.6%

Lock%

Forefoot Bending Stiffness

7.5

N/A

Forefoot Bending Resistance Picture

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Forefoot Bending Resistance

Preview Graph

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Forefoot Bending Stiffness

15.4 N/mm

Lock N/mm

Forefoot Bending Force

290 N

Lock N

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Amazon

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R.A.D SYNTH

Li-Ning Chaoying Pro

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R.A.D SYNTH vs Li-Ning Chaoying Pro: Main Discussion

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R.A.D SYNTH vs Li-Ning Chaoying Pro

Which Running Shoe Is Better?

Products

Our Verdict

Variants

Review

Check Price

Main Differences for Half/Full Marathon Racing

Threshold

Half/Full Marathon Racing

Full Comparison

Half/Full Marathon Racing

5K/10K Racing

Long Run

Daily Training

Energy Return

Responsiveness

Cushioning

True To Size

Stability

Weight

Right Shoe Weight Photo

Left Shoe Weight Photo

Weight

Stack Heights

Stack Height Photo

Heel Stack Height

Forefoot Stack Height

Heel-To-Toe Drop

Advertised Heel-To-Toe Drop

External Shape

3D Model Full Shoe

Outsole Heel Width

Outsole Arch Width

Outsole Forefoot Width

Heel Width-To-Stack Ratio

Forefoot Width-To-Stack Ratio

Internal Shape

3D Model Internal

Internal Length

Internal Heel Width

Internal Forefoot Width

Wide Sizing Available

Forefoot Fit: Width

Forefoot Width Photo

Ball-Of-Foot TTS Deviation

Toe TTS Deviation

Forefoot Fit: Height

Forefoot Height Photo

Toe TTS Deviation

Arch Fit: Width

Arch Fit Photo

Arch Width TTS Deviation

Length Fit

Toe Clearance Photo

Heel Rocker Geometry

Heel Rocker Photo

Heel Spring

Heel Apex Position

Heel Rocker Angle

Forefoot Rocker Geometry

Forefoot Rocker Photo

Toe Spring

Toe Apex Position

Forefoot Rocker Angle

Foam

Primary Foam Picture

Secondary Foam Picture

Primary Foam Name

Primary Foam Type

Secondary Foam Name

Secondary Foam Type

Other Features

Other Features Photo

Tongue Gusset Type

Plate

Heel Compression Energy Return

Heel Compression Video

Heel Energy Return

Heel Energy Return

Main Differences for

Half/Full Marathon Racing