Libby Halford

Bib: 73895 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

11:44/mi

36:27

↑ 49 ft↓ 125 ft0.5% grade

54 ft elev

10K· 6.21 mi

12:32/mi

1:15:21

↑ 50 ft↓ 81 ft0.2% grade

24 ft elev

15K· 9.32 mi

13:02/mi

1:55:50

↑ 44 ft↓ 51 ft

18 ft elev

20K· 12.43 mi

12:50/mi

2:35:40

↑ 67 ft↓ 40 ft0.2% grade

45 ft elev

Half· 13.10 mi

12:42/mi

2:44:11

↓ 27 ft0.6% grade

25 ft elev

25K· 15.53 mi

13:38/mi

3:17:22

↑ 50 ft↓ 63 ft0.1% grade

12 ft elev

30K· 18.64 mi

17:06/mi

4:10:29

↑ 69 ft↓ 46 ft0.1% grade

35 ft elev

35K· 21.75 mi

14:32/mi

4:55:37

↑ 87 ft↓ 88 ft

34 ft elev

40K· 24.85 mi

14:22/mi

5:40:13

↑ 58 ft↓ 75 ft0.1% grade

17 ft elev

Finish· 26.22 mi

12:47/mi

5:57:39

↑ 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

2:44:1112:33 /mi⚡ faster

2nd Half

3:13:2814:45 /mi+17.8%

Positive split — 17.8% slower in the second half

AI Race Performance Report

Libby'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	36:27	11:44	3.11 mi	36:27	11:44	-
10K	1:15:21	12:08	3.10 mi	38:54	12:32	+0:48
15K	1:55:50	12:26	3.11 mi	40:29	13:02	+0:30
20K	2:35:40	12:32	3.11 mi	39:50	12:50	-0:12
Half(13.10 mi)	2:44:11	12:33	0.67 mi	8:31	12:42	-0:08
25K	3:17:22	12:43	2.43 mi	33:11	13:38	+0:56
30K	4:10:29	13:27	3.11 mi	53:07	17:06	+3:28
35K	4:55:37	13:36	3.11 mi	45:08	14:32	-2:34
40K	5:40:13	13:42	3.10 mi	44:36	14:22	-0:10
Finish(26.22 mi)	5:57:39	13:40	1.37 mi	17:26	12:47	-1:35

Trend:

Faster pace

Steady pace

Slower pace

More below

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Checkpoints & Pacing

Pace Line

Fastest Pace

11:44 /mi

Average Pace

13:39 /mi

Slowest Pace

17:06 /mi

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Fastest

Middle

Slowest

Average

Segments

Time at Faster Pace

36:27

10% of race

Time at Steady Pace

2:58:21

50% of race

Time at Slower Pace

2:22:51

40% of race

Average Pace: 13:38 /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	52907	21138	21138	52905	21324	21324
10K	3.10 mi	53460-553	21569-431	21569-431	53857	21886	21886
15K	3.11 mi	53250+210	21448+121	21448+121	52905	21324	21324
20K	3.11 mi	52691+559	21144+304	21144+304	51268	20437	20437
Half(13.10 mi)	0.67 mi	52522+169	21061+83	21061+83	49094	19327	19327
25K	2.43 mi	52051+471	20822+239	20822+239	49891	19880	19880
30K	3.11 mi	53444-1393	21791-969	21791-969	57105	24394	24394
35K	3.11 mi	52864+580	21509+282	21509+282	48615	19874	19874
40K	3.10 mi	52666+198	21439+70	21439+70	49978	20729	20729
Finish(26.22 mi)	1.37 mi	52421+245	21327+112	21327+112	45209	18249	18249

18249

Passing Analysis

No position changes recorded for this athlete.

All Results

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Public Race Data

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Race managed by

London Marathon Events

Race timed by

Mika Timing