ACG Ultrafly Trail

ZoomX

Nike ZoomX foam is ultra responsive and lightweight, giving you bounce and a snappy response with every step

Vibram®

The Vibram Ecostep Natural compound is another innovative solution by Vibram, designed to offer a green alternative in the footwear world.

Product features

Best for

Trail Running

Arch support

Neutral

Cushioning

Moderate

Drop

8.5 mm

Distance

Mid-Distance
Long-Distance

Weight

10.1 oz

Women's Shoes Sizing

US - Women's	US - Men's	UK	EU	Foot Length (in)
3.5	2	1.5	33.5	8 3/16
4	2.5	1.5	34.5	8 5/16
4.5	3	2	35	8 1/2
5	3.5	2.5	35.5	8 11/16
5.5	4	3	36	8 13/16
6	4.5	3.5	36.5	9
6.5	5	4	37.5	9 3/16
7	5.5	4.5	38	9 5/16
7.5	6	5	38.5	9 1/2
8	6.5	5.5	39	9 11/16
8.5	7	6	40	9 13/16
9	7.5	6.5	40.5	10
9.5	8	7	41	10 3/16
10	8.5	7.5	42	10 5/16
10.5	9	8	42.5	10 1/2
11	9.5	8.5	43	10 11/16
11.5	10	9	44	10 13/16
12	10.5	9.5	44.5	11
12.5	11	10	45	11 3/16
13	11.5	10.5	45.5	11 5/16
13.5	12	11	46	11 1/2
14	12.5	11.5	47	11 11/16
14.5	13	12	47.5	11 13/16
15	13.5	12.5	48	12
15.5	14	13	48.5	12 3/16
16	14.5	13.5	49	12 5/16
16.5	15	14	50	12 1/2
17	15.5	14.5	50.5	12 11/16
17.5	16	15	51
18	16.5	15.5	51.5
18.5	17	16	52
19	17.5	16.5	52.5
19.5	18	17	53
20	18.5	17.5	53.5
20.5	19	18	54
21	19.5	18.5	54.5
21.5	20	19	55
22	20.5	19.5	55.5
22.5	21	20	56

Men's Shoes Sizing

US - Men's	US - Women's	UK	EU	Foot Length (in)
3.5	5	3	35.5	8 1/2
4	5.5	3.5	36	8 11/16
4.5	6	4	36.5	8 13/16
5	6.5	4.5	37.5	9
5.5	7	5	38	9 3/16
6	7.5	5.5	38.5	9 5/16
6.5	8	6	39	9 1/2
7	8.5	6	40	9 11/16
7.5	9	6.5	40.5	9 13/16
8	9.5	7	41	10
8.5	10	7.5	42	10 3/16
9	10.5	8	42.5	10 5/16
9.5	11	8.5	43	10 1/2
10	11.5	9	44	10 11/16
10.5	12	9.5	44.5	10 13/16
11	12.5	10	45	11
11.5	13	10.5	45.5	11 3/16
12	13.5	11	46	11 5/16
12.5	14	11.5	47	11 1/2
13	14.5	12	47.5	11 11/16
13.5	15	12.5	48	11 13/16
14	15.5	13	48.5	12
14.5	16	13.5	49	12 3/16
15	16.5	14	49.5	12 5/16
15.5	17	14.5	50	12 1/2
16	17.5	15	50.5	12 11/16
16.5	18	15.5	51	12 13/16
17	18.5	16	51.5	13
17.5	19	16.5	52	13 3/16
18	19.5	17	52.5	13 5/16
18.5	20	17.5	53	13 1/2
19	20.5	18	53.5	13 11/16
19.5	21	18.5	54	13 13/16
20	21.5	19	54.5	14
20.5	22	19.5	55	14 3/16
21	22.5	20	55.5	14 5/16
21.5	23	20.5	56	14 1/2
22	23.5	21	56.5	14 11/16

Unisex Shoes Sizing

US - Men's	US - Women's	UK	EU	Foot Length (in)
3.5	5	3	35.5	8 1/2
4	5.5	3.5	36	8 11/16
4.5	6	4	36.5	8 13/16
5	6.5	4.5	37.5	9
5.5	7	5	38	9 3/16
6	7.5	5.5	38.5	9 5/16
6.5	8	6	39	9 1/2
7	8.5	6	40	9 11/16
7.5	9	6.5	40.5	9 13/16
8	9.5	7	41	10
8.5	10	7.5	42	10 3/16
9	10.5	8	42.5	10 5/16
9.5	11	8.5	43	10 1/2
10	11.5	9	44	10 11/16
10.5	12	9.5	44.5	10 13/16
11	12.5	10	45	11
11.5	13	10.5	45.5	11 3/16
12	13.5	11	46	11 5/16
12.5	14	11.5	47	11 1/2
13	14.5	12	47.5	11 11/16
13.5	15	12.5	48	11 13/16
14	15.5	13	48.5	12
14.5	16	13.5	49	12 3/16
15	16.5	14	49.5	12 5/16
15.5	17	14.5	50	12 1/2
16	17.5	15	50.5	12 11/16
16.5	18	15.5	51	12 13/16
17	18.5	16	51.5	13
17.5	19	16.5	52	13 3/16
18	19.5	17	52.5	13 5/16
18.5	20	17.5	53	13 1/2
19	20.5	18	53.5	13 11/16
19.5	21	18.5	54	13 13/16
20	21.5	19	54.5	14
20.5	22	19.5	55	14 3/16
21	22.5	20	55.5	14 5/16
21.5	23	20.5	56	14 1/2
22	23.5	21	56.5	14 11/16

Shoes Sizing
Find your size in the chart below. If you do not know your size, use the How To Measure Foot Length prompts at the bottom of the size guide to help you find the right size. Please note the CM size displayed on shoe boxes and labels is different than Foot Length (cm).

Women's Shoes Sizing

US - Women's	US - Men's	UK	EU	Foot Length (in)
3.5	2	1.5	33.5	8 3/16
4	2.5	1.5	34.5	8 5/16
4.5	3	2	35	8 1/2
5	3.5	2.5	35.5	8 11/16
5.5	4	3	36	8 13/16
6	4.5	3.5	36.5	9
6.5	5	4	37.5	9 3/16
7	5.5	4.5	38	9 5/16
7.5	6	5	38.5	9 1/2
8	6.5	5.5	39	9 11/16
8.5	7	6	40	9 13/16
9	7.5	6.5	40.5	10
9.5	8	7	41	10 3/16
10	8.5	7.5	42	10 5/16
10.5	9	8	42.5	10 1/2
11	9.5	8.5	43	10 11/16
11.5	10	9	44	10 13/16
12	10.5	9.5	44.5	11
12.5	11	10	45	11 3/16
13	11.5	10.5	45.5	11 5/16
13.5	12	11	46	11 1/2
14	12.5	11.5	47	11 11/16
14.5	13	12	47.5	11 13/16
15	13.5	12.5	48	12
15.5	14	13	48.5	12 3/16
16	14.5	13.5	49	12 5/16
16.5	15	14	50	12 1/2
17	15.5	14.5	50.5	12 11/16
17.5	16	15	51
18	16.5	15.5	51.5
18.5	17	16	52
19	17.5	16.5	52.5
19.5	18	17	53
20	18.5	17.5	53.5
20.5	19	18	54
21	19.5	18.5	54.5
21.5	20	19	55
22	20.5	19.5	55.5
22.5	21	20	56

Men's Shoes Sizing

US - Men's	US - Women's	UK	EU	Foot Length (in)
3.5	5	3	35.5	8 1/2
4	5.5	3.5	36	8 11/16
4.5	6	4	36.5	8 13/16
5	6.5	4.5	37.5	9
5.5	7	5	38	9 3/16
6	7.5	5.5	38.5	9 5/16
6.5	8	6	39	9 1/2
7	8.5	6	40	9 11/16
7.5	9	6.5	40.5	9 13/16
8	9.5	7	41	10
8.5	10	7.5	42	10 3/16
9	10.5	8	42.5	10 5/16
9.5	11	8.5	43	10 1/2
10	11.5	9	44	10 11/16
10.5	12	9.5	44.5	10 13/16
11	12.5	10	45	11
11.5	13	10.5	45.5	11 3/16
12	13.5	11	46	11 5/16
12.5	14	11.5	47	11 1/2
13	14.5	12	47.5	11 11/16
13.5	15	12.5	48	11 13/16
14	15.5	13	48.5	12
14.5	16	13.5	49	12 3/16
15	16.5	14	49.5	12 5/16
15.5	17	14.5	50	12 1/2
16	17.5	15	50.5	12 11/16
16.5	18	15.5	51	12 13/16
17	18.5	16	51.5	13
17.5	19	16.5	52	13 3/16
18	19.5	17	52.5	13 5/16
18.5	20	17.5	53	13 1/2
19	20.5	18	53.5	13 11/16
19.5	21	18.5	54	13 13/16
20	21.5	19	54.5	14
20.5	22	19.5	55	14 3/16
21	22.5	20	55.5	14 5/16
21.5	23	20.5	56	14 1/2
22	23.5	21	56.5	14 11/16

Unisex Shoes Sizing

US - Men's	US - Women's	UK	EU	Foot Length (in)
3.5	5	3	35.5	8 1/2
4	5.5	3.5	36	8 11/16
4.5	6	4	36.5	8 13/16
5	6.5	4.5	37.5	9
5.5	7	5	38	9 3/16
6	7.5	5.5	38.5	9 5/16
6.5	8	6	39	9 1/2
7	8.5	6	40	9 11/16
7.5	9	6.5	40.5	9 13/16
8	9.5	7	41	10
8.5	10	7.5	42	10 3/16
9	10.5	8	42.5	10 5/16
9.5	11	8.5	43	10 1/2
10	11.5	9	44	10 11/16
10.5	12	9.5	44.5	10 13/16
11	12.5	10	45	11
11.5	13	10.5	45.5	11 3/16
12	13.5	11	46	11 5/16
12.5	14	11.5	47	11 1/2
13	14.5	12	47.5	11 11/16
13.5	15	12.5	48	11 13/16
14	15.5	13	48.5	12
14.5	16	13.5	49	12 3/16
15	16.5	14	49.5	12 5/16
15.5	17	14.5	50	12 1/2
16	17.5	15	50.5	12 11/16
16.5	18	15.5	51	12 13/16
17	18.5	16	51.5	13
17.5	19	16.5	52	13 3/16
18	19.5	17	52.5	13 5/16
18.5	20	17.5	53	13 1/2
19	20.5	18	53.5	13 11/16
19.5	21	18.5	54	13 13/16
20	21.5	19	54.5	14
20.5	22	19.5	55	14 3/16
21	22.5	20	55.5	14 5/16
21.5	23	20.5	56	14 1/2
22	23.5	21	56.5	14 11/16

Shoes Sizing
Find your size in the chart below. If you do not know your size, use the How To Measure Foot Length prompts at the bottom of the size guide to help you find the right size. Please note the CM size displayed on shoe boxes and labels is different than Foot Length (cm).

Men's ACG Ultrafly Trail

DESCRIPTION

SIZE CHART

TECHNOLOGY

ZoomX

Vibram®

REVIEWS

Product features

Best for

Arch support

Cushioning

Drop

Distance

Weight

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