Jemima Headlam

Bib: 66696 F GB

0:00

0:00

/ mi

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Overall

#0 / 59786

Gender (Female)

#0 / 26115

Top 39%

Division (F18-39)

#0 / 14744

Top 40%

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

10:12/mi

31:39

↑ 49 ft↓ 125 ft0.5% grade

54 ft elev

10K· 6.21 mi

10:28/mi

1:04:09

↑ 50 ft↓ 81 ft0.2% grade

24 ft elev

15K· 9.32 mi

10:41/mi

1:37:18

↑ 44 ft↓ 51 ft

18 ft elev

20K· 12.43 mi

10:20/mi

2:09:23

↑ 67 ft↓ 40 ft0.2% grade

45 ft elev

Half· 13.10 mi

10:47/mi

2:16:37

↓ 27 ft0.6% grade

25 ft elev

25K· 15.53 mi

10:48/mi

2:42:55

↑ 50 ft↓ 63 ft0.1% grade

12 ft elev

30K· 18.64 mi

10:34/mi

3:15:44

↑ 69 ft↓ 46 ft0.1% grade

35 ft elev

35K· 21.75 mi

10:27/mi

3:48:10

↑ 87 ft↓ 88 ft

34 ft elev

40K· 24.85 mi

9:55/mi

4:18:57

↑ 58 ft↓ 75 ft0.1% grade

17 ft elev

Finish· 26.22 mi

9:33/mi

4:31:58

↑ 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

2:16:3710:26 /mi⚖️ balanced

2nd Half

2:15:2110:19 /mi⚖️ balanced

Even split — consistent pacing between halves

AI Race Performance Report

Jemima's race, broken down like a coach

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Checkpoint Splits

Checkpoint	Time	Avg Pace	Segment Length	Segment Time	Segment Pace	Diff
5K	31:39	10:12	3.11 mi	31:39	10:12	-
10K	1:04:09	10:20	3.10 mi	32:30	10:28	+0:16
15K	1:37:18	10:27	3.11 mi	33:09	10:41	+0:13
20K	2:09:23	10:25	3.11 mi	32:05	10:20	-0:21
Half(13.10 mi)	2:16:37	10:26	0.67 mi	7:14	10:47	+0:27
25K	2:42:55	10:30	2.43 mi	26:18	10:48	+0:01
30K	3:15:44	10:31	3.11 mi	32:49	10:34	-0:14
35K	3:48:10	10:30	3.11 mi	32:26	10:27	-0:07
40K	4:18:57	10:26	3.10 mi	30:47	9:55	-0:32
Finish(26.22 mi)	4:31:58	10:23	1.37 mi	13:01	9:33	-0:22

Trend:

Faster pace

Steady pace

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Checkpoints & Pacing

Pace Line

Fastest Pace

9:33 /mi

Average Pace

10:23 /mi

Slowest Pace

10:48 /mi

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Fastest

Middle

Slowest

Average

Segments

Time at Faster Pace

2:52:28

63% of race

Time at Steady Pace

1:39:30

37% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 10:22 /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	40737	13804	13804	38893	12941	12941
10K	3.10 mi	40740-3	13798+6	13798+6	40950	13972	13972
15K	3.11 mi	39943+797	13417+381	13417+381	38893	12941	12941
20K	3.11 mi	38835+1108	12924+493	12924+493	36455	11992	11992
Half(13.10 mi)	0.67 mi	38682+153	12875+49	12875+49	37261	12570	12570
25K	2.43 mi	37959+723	12649+226	12649+226	35566	11986	11986
30K	3.11 mi	36234+1725	11985+664	11985+664	29617	9609	9609
35K	3.11 mi	33982+2252	11166+819	11166+819	24698	8042	8042
40K	3.10 mi	31792+2190	10409+757	10409+757	20267	6641	6641
Finish(26.22 mi)	1.37 mi	31030+762	10147+262	10147+262	19415	6358	6358

6358

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