Siobhan Westerman

Bib: 35900 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

11:55/mi

37:01

↑ 49 ft↓ 125 ft0.5% grade

54 ft elev

10K· 6.21 mi

13:15/mi

1:18:08

↑ 50 ft↓ 81 ft0.2% grade

24 ft elev

15K· 9.32 mi

15:27/mi

2:06:08

↑ 44 ft↓ 51 ft

18 ft elev

20K· 12.43 mi

15:27/mi

2:54:07

↑ 67 ft↓ 40 ft0.2% grade

45 ft elev

Half· 13.10 mi

15:23/mi

3:04:26

↓ 27 ft0.6% grade

25 ft elev

25K· 15.53 mi

18:37/mi

3:49:45

↑ 50 ft↓ 63 ft0.1% grade

12 ft elev

30K· 18.64 mi

18:37/mi

4:47:34

↑ 69 ft↓ 46 ft0.1% grade

35 ft elev

35K· 21.75 mi

18:00/mi

5:43:28

↑ 87 ft↓ 88 ft

34 ft elev

40K· 24.85 mi

18:59/mi

6:42:25

↑ 58 ft↓ 75 ft0.1% grade

17 ft elev

Finish· 26.22 mi

17:15/mi

7:05:56

↑ 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

3:04:2614:05 /mi⚡ faster

2nd Half

4:01:3018:25 /mi+30.9%

Positive split — 30.9% slower in the second half

AI Race Performance Report

Siobhan'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	37:01	11:55	3.11 mi	37:01	11:55	-
10K	1:18:08	12:35	3.10 mi	41:07	13:15	+1:20
15K	2:06:08	13:32	3.11 mi	48:00	15:27	+2:12
20K	2:54:07	14:01	3.11 mi	48:00	15:27	0:00
Half(13.10 mi)	3:04:26	14:05	0.67 mi	10:19	15:23	-0:04
25K	3:49:45	14:48	2.43 mi	45:19	18:37	+3:14
30K	4:47:34	15:26	3.11 mi	57:49	18:37	0:00
35K	5:43:28	15:48	3.11 mi	55:54	18:00	-0:37
40K	6:42:25	16:12	3.10 mi	58:57	18:59	+0:59
Finish(26.22 mi)	7:05:56	16:16	1.37 mi	23:31	17:15	-1:44

Trend:

Faster pace

Steady pace

Slower pace

Est.Checkpoint not recorded (estimated)

~Segment time uses estimated prior

More below

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Checkpoints & Pacing

Pace Line

Fastest Pace

11:55 /mi

Average Pace

16:15 /mi

Slowest Pace

18:59 /mi

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Fastest

Middle

Slowest

Average

Segments

Time at Faster Pace

3:04:26

43% of race

Time at Steady Pace

1:19:25

19% of race

Time at Slower Pace

2:42:05

38% of race

Average Pace: 16:15 /mi

Loading chart...

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	53751	21728	21728	58039	24833	24833
10K	3.10 mi	55094-1343	22694-966	22694-966	55939	23335	23335
15K	3.11 mi	56571-1477	23750-1056	23750-1056	58039	24833	24833
20K	3.11 mi	56919-348	24018-268	24018-268	57393	24417	24417
Half(13.10 mi)	0.67 mi	56918+1	24025-7	24025-7	56621	24065	24065
25K	2.43 mi	57459-541	24421-396	24421-396	58564	25253	25253
30K	3.11 mi	57877-418	24719-298	24719-298	58588	25336	25336
35K	3.11 mi	57951-74	24797-78	24797-78	57640	24860	24860
40K	3.10 mi	58170-219	24967-170	24967-170	58876	25556	25556
Finish(26.22 mi)	1.37 mi	58192-22	24992-25	24992-25	57925	25065	25065

25065

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