Type a shoe name, like Pegasus, Clifton or Kayano.

Newton The Sir Isaac

Daily trainer · Neutral · Road · 11.0 oz (men's) · 27/23mm stack · 4mm drop

Discontinued — we no longer see this shoe in stock.

How it ranks

The Newton The Sir Isaac’s rating is an early estimate. We’ve collected 2 runner reviews so far, with brand history also informing the score.

Newton The Sir Isaac

Current estimate: Below average

67
Overall
67
Durability
85
Cushioning
83
Comfort
76
Appearance
72
Value
70
Confidence

Confidence

How settled the rating is against every other rated shoe. A shoe can rate high on confidence with relatively few reviews of its own when its product line has a long record and external ratings from retailer sites agree. Confidence is low when we have few ratings or when runners disagree.

Confidence

22 Very low

22

Based on

The bars show roughly how much each source contributes to this shoe’s rating. Their influence depends on how many reviews we’ve collected, how many earlier versions are in the product line, and the external ratings available.

  1. Brand rating
  2. Our ratings
  3. External ratings

Where to buy

No offers available

Affiliate links included. They never affect our ratings.

Prices updated daily. Last checked Oct 22.


Pros

  • Both reviewers so far rate it 4 out of 5 overall, for comfort and for durability.

Cons

  • Appearance draws 3.0 out of 5 in the two reviews so far, and value 3.5.

Rating & Confidence vs. other shoes for sale

Each dot is one rated shoe for sale, placed by its rating and by how much evidence sits behind it. Shoes toward the top right are both well rated and well established.

Confidence
50 60 70 80 90 100 25 50 75 100

Better Shoes Rating

The Sir Isaac rates 67. This shoe has very low confidence. See how we rate shoes.

Runner Ratings

2 ratings
5/5 0
4/5 2
3/5 0
2/5 0
1/5 0

Specs & fit

Sizing and ride details at a glance.

Weight
11.0 oz (men's)
Release
2014
Stack
27/23mm
Drop
4mm

Runner reviews

Write a review

Showing 1–2 of 2 written reviews

4/5

Overall

Anonymous runner · Aug 29, 2014

45 mpw training for a half marathon

Comfort
4/5
Durability
3/5
Appearance
3/5
Value
3/5

4/5

Overall

Anonymous runner · Aug 28, 2014

45 mpw

Comfort
4/5
Durability
5/5
Appearance
3/5
Value
4/5

Alternatives

Other shoes worth considering.

Compared to other shoes

See how this shoe compares to others like it.

Current shoe
Choose a model
Reference shoe
Lowest price / Best overall / Best cushioning
Lightest / Newest / Best appearance
Shoe properties
Type
Daily trainer
Daily trainer
Daily trainer
Pronation
Neutral
Neutral
Neutral
Weight
11.0 oz (men's)
9.9 oz
8.0 oz Lightest
Stack
27/23mm
40/35mm
38/33mm
Drop
4mm
4mm
5mm
Release
2014
2022 Q3
2023 Q1 Newest
MSRP
—
$165
$145
Best price
—
$95 Lowest price
$170
Ratings
Overall
67 Below average
99 Exceptional Best overall
98 Exceptional
Comfort
76 Decent
99 Exceptional
99 Exceptional
Cushioning
83 Good
99 Exceptional Best cushioning
98 Exceptional
Durability
85 Good
97 Exceptional Best durability
87 Good
Appearance
72 Decent
75 Decent
86 Good Best appearance
Value
70 Decent
77 Decent
83 Good Best value rating
Specific shoe

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