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Saucony Endorphin Speed 5 'Boston'

Name: Saucony Endorphin Speed 5 'Boston'
Brand: Saucony
SKU: S21007-403
Availability: InStock

Saucony · Style S21007-403 · Released 2026-01-15

from $182.96

Select a size:

Use the chart below to convert between US, UK, EU and JP sizes.

US	UK	EU	JP (cm)
3	2	35
3.5	2.5	35.5
4	3	36
4.5	3.5	37	22.5
5	4	37.5	23
5.5	4.5	38	23.5
6	5	38.5	24
6.5	5.5	39	24.5
7	6	40	25
7.5	6.5	40.5	25.5
8	7	41	26
8.5	7.5	42	26.5
9	8	42.5	27
9.5	8.5	43	27.5
10	9	44	28
10.5	9.5	44.5	28.5
11	10	45	29
11.5	10.5	46	29.5
12	11	46.5	30
12.5	11.5	47	30.5
13	12	48	31
14	13	49
15	14	50
16	15	51.5

US	UK	EU	JP (cm)
4	2	34.5
4.5	2	35
5	3	35.5	21.5
5.5	3.5	36	22
6	4	37	22.5
6.5	4.5	37.5	23
7	5	38	23.5
7.5	5.5	38.5	24
8	6	39	24.5
8.5	6.5	40	25
9	7	40.5	25.5
9.5	7.5	41	26
10	8	42	26.5
10.5	8.5	42.5	27
11	9	43	27.5
11.5	9.5	44
12	10	44.5
13	11	46

US	UK	EU
0	0	15
1	0	16.5
2	1.5	17.5
2.5	2	18
3	2.5	18.5
3.5	3	19
4	3.5	19.5
4.5	4	20.5
5	4.5	21
5.5	5	21.5
6	5.5	22
6.5	6	23
7	6.5	23.5
7.5	7	24
8	7.5	25
8.5	8	25.5
9	8.5	26
9.5	9	26.5
10	9.5	27.5
10.5	10	28
11	10.5	28.5
11.5	11	29
12	11.5	30
12.5	12	30.5
13	12.5	31
13.5	13	32
1	13.5	32.5
1.5	1	33
2	1.5	33.5
2.5	2	34.5
3	2.5	35
3.5	3	35.5
4	3.5	36
4.5	4	37
5	4.5	37.5
5.5	5	38
6	5.5	38.5
6.5	6	39.5
7	6.5	40

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14-day returns for store credit & equal-value exchanges — policy

Size, price & UPC details

Size	Price	UPC	Delivery
US M 8 / W 9.5	$231.40	195021629511	5-7 business days
US M 9 / W 10.5	—	195021629535	Out of stock
US M 10 / W 11.5	—	195021629559	Out of stock
US M 10.5 / W 12	$231.40	195021629566	5-7 business days
US M 11 / W 12.5	—	0195021629573	Out of stock
US M 11.5 / W 13	—	0195021629580	Out of stock
US M 12 / W 13.5	$182.96	0195021629597	5-7 business days
US M 13 / W 14.5	$182.96	0195021629610	5-7 business days
US M 14 / W 15.5	$182.96	0195021629627	5-7 business days