Isabelle Williams

Bib: 22123 F GB

0:00

0:00

/ mi

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Overall

#0 / 59786

Top 49%

Gender (Female)

#0 / 26115

Top 36%

Division (F18-39)

#0 / 14744

Top 37%

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

9:22/mi

29:06

↑ 49 ft↓ 125 ft0.5% grade

54 ft elev

10K· 6.21 mi

9:12/mi

57:40

↑ 50 ft↓ 81 ft0.2% grade

24 ft elev

15K· 9.32 mi

9:37/mi

1:27:31

↑ 44 ft↓ 51 ft

18 ft elev

20K· 12.43 mi

9:24/mi

1:56:41

↑ 67 ft↓ 40 ft0.2% grade

45 ft elev

Half· 13.10 mi

9:40/mi

2:03:10

↓ 27 ft0.6% grade

25 ft elev

25K· 15.53 mi

9:56/mi

2:27:20

↑ 50 ft↓ 63 ft0.1% grade

12 ft elev

30K· 18.64 mi

10:40/mi

3:00:28

↑ 69 ft↓ 46 ft0.1% grade

35 ft elev

35K· 21.75 mi

11:33/mi

3:36:18

↑ 87 ft↓ 88 ft

34 ft elev

40K· 24.85 mi

11:37/mi

4:12:23

↑ 58 ft↓ 75 ft0.1% grade

17 ft elev

Finish· 26.22 mi

10:20/mi

4:26:28

↑ 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

2:03:109:25 /mi⚡ faster

2nd Half

2:23:1810:56 /mi+16.3%

Positive split — 16.3% slower in the second half

AI Race Performance Report

Isabelle'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	29:06	9:22	3.11 mi	29:06	9:22	-
10K	57:40	9:17	3.10 mi	28:34	9:12	-0:10
15K	1:27:31	9:24	3.11 mi	29:51	9:37	+0:25
20K	1:56:41	9:24	3.11 mi	29:10	9:24	-0:13
Half(13.10 mi)	2:03:10	9:25	0.67 mi	6:29	9:40	+0:16
25K	2:27:20	9:30	2.43 mi	24:10	9:56	+0:16
30K	3:00:28	9:41	3.11 mi	33:08	10:40	+0:44
35K	3:36:18	9:57	3.11 mi	35:50	11:33	+0:53
40K	4:12:23	10:10	3.10 mi	36:05	11:37	+0:04
Finish(26.22 mi)	4:26:28	10:11	1.37 mi	14:05	10:20	-1:17

Trend:

Faster pace

Steady pace

Slower pace

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Checkpoints & Pacing

Pace Line

Fastest Pace

9:12 /mi

Average Pace

10:10 /mi

Slowest Pace

11:37 /mi

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Fastest

Middle

Slowest

Average

Segments

Time at Faster Pace

1:26:50

33% of race

Time at Steady Pace

1:14:35

28% of race

Time at Slower Pace

1:45:03

39% of race

Average Pace: 10:10 /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	31769	9535	9535	29097	8452	8452
10K	3.10 mi	29680+2089	8727+808	8727+808	27408	7853	7853
15K	3.11 mi	29377+303	8571+156	8571+156	29097	8452	8452
20K	3.11 mi	28947+430	8446+125	8446+125	28103	8130	8130
Half(13.10 mi)	0.67 mi	28820+127	8409+37	8409+37	27657	8073	8073
25K	2.43 mi	28632+188	8414-5	8414-5	28761	8743	8743
30K	3.11 mi	28701-69	8588-174	8588-174	30344	9946	9946
35K	3.11 mi	29074-373	8978-390	8978-390	31821	11364	11364
40K	3.10 mi	29362-288	9327-349	9327-349	32625	12197	12197
Finish(26.22 mi)	1.37 mi	29067+295	9288+39	9288+39	25785	9050	9050

9050

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