Isabel Marsh

Bib: 72321 F GB

0:00

0:00

/ mi

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Overall

#0 / 59786

Gender (Female)

#0 / 26115

Division (F18-39)

#0 / 14744

Race Day Weather

56°/46°F

overcast clouds

Race Timeline

Ribbon color based on

FasterSteadySlower· vs. your average pace

Start

0:00

Race begins

131 ft elev

5K· 3.11 mi

11:05/mi

34:25

↑ 49 ft↓ 125 ft0.5% grade

54 ft elev

10K· 6.21 mi

12:11/mi

1:12:16

↑ 50 ft↓ 81 ft0.2% grade

24 ft elev

15K· 9.32 mi

14:13/mi

1:56:26

↑ 44 ft↓ 51 ft

18 ft elev

20K· 12.43 mi

14:03/mi

2:40:02

↑ 67 ft↓ 40 ft0.2% grade

45 ft elev

Half· 13.10 mi

15:01/mi

2:50:06

↓ 27 ft0.6% grade

25 ft elev

25K· 15.53 mi

15:01/mi

3:26:40

↑ 50 ft↓ 63 ft0.1% grade

12 ft elev

30K· 18.64 mi

15:44/mi

4:15:32

↑ 69 ft↓ 46 ft0.1% grade

35 ft elev

35K· 21.75 mi

16:23/mi

5:06:26

↑ 87 ft↓ 88 ft

34 ft elev

40K· 24.85 mi

16:29/mi

5:57:37

↑ 58 ft↓ 75 ft0.1% grade

17 ft elev

Finish· 26.22 mi

13:25/mi

6:15:54

↑ 14 ft↓ 18 ft

19 ft elev

Course Elevation

503ft

Total climb

166ft

Range

6 to 172 ft

613ft

Total descent

About the height of the Statue of Liberty

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The Course

Half Splits

1st Half· via Half

2:50:0613:00 /mi⚡ faster

2nd Half

3:25:4815:42 /mi+21.0%

Positive split — 21.0% slower in the second half

AI Race Performance Report

Isabel's race, broken down like a coach

The full Race Story, performance analysis, segment & passing breakdowns, and where the race turned. Free to unlock — for anyone.

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Checkpoint Splits

Checkpoint	Time	Avg Pace	Segment Length	Segment Time	Segment Pace	Diff
5K	34:25	11:05	3.11 mi	34:25	11:05	-
10K	1:12:16	11:38	3.10 mi	37:51	12:11	+1:06
15K	1:56:26	12:30	3.11 mi	44:10	14:13	+2:02
20K	2:40:02	12:53	3.11 mi	43:36	14:03	-0:10
Half(13.10 mi)	2:50:06	13:00	0.67 mi	10:04	15:01	+0:58
25K	3:26:40	13:19	2.43 mi	36:34	15:01	0:00
30K	4:15:32	13:43	3.11 mi	48:52	15:44	+0:43
35K	5:06:26	14:06	3.11 mi	50:54	16:23	+0:39
40K	5:57:37	14:24	3.10 mi	51:11	16:29	+0:06
Finish(26.22 mi)	6:15:54	14:21	1.37 mi	18:17	13:25	-3:04

Trend:

Faster pace

Steady pace

Slower pace

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Checkpoints & Pacing

Pace Line

Fastest Pace

11:05 /mi

Average Pace

14:21 /mi

Slowest Pace

16:29 /mi

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Fastest

Middle

Slowest

Average

Segments

Time at Faster Pace

2:14:09

36% of race

Time at Steady Pace

2:19:40

37% of race

Time at Slower Pace

1:42:05

27% of race

Average Pace: 14:20 /mi

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Faster pace (< avg)

Steady pace (≈ avg)

Slower pace (> avg)

Heatmap

0mi6.6mi13.1mi19.7mi26.2mi

Pace:

Faster

Steady

Slower

Checkpoint and Segment Rankings

Checkpoint	Seg. Dist	Overall	Females	F18-39	Seg. Overall	Seg. Females	Seg. F18-39
5K	3.11 mi	49022	18671	18671	56181	23525	23525
10K	3.10 mi	51162-2140	19999-1328	19999-1328	52608	21056	21056
15K	3.11 mi	53459-2297	21584-1585	21584-1585	56181	23525	23525
20K	3.11 mi	53976-517	21998-414	21998-414	54834	22733	22733
Half(13.10 mi)	0.67 mi	54132-156	22119-121	22119-121	55979	23647	23647
25K	2.43 mi	54111+21	22154-35	22154-35	54030	22371	22371
30K	3.11 mi	54316-205	22328-174	22328-174	54718	22948	22948
35K	3.11 mi	54521-205	22542-214	22542-214	54873	23277	23277
40K	3.10 mi	54961-440	22851-309	22851-309	56274	24111	24111
Finish(26.22 mi)	1.37 mi	54762+199	22755+96	22755+96	48644	20041	20041

20041

Passing Analysis

No position changes recorded for this athlete.

All Results

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Public Race Data

Enhanced athlete results built from publicly available data.

Race managed by

London Marathon Events

Race timed by

Mika Timing