Rebecca Marks

Bib: 22651 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

9:37/mi

29:52

↑ 49 ft↓ 125 ft0.5% grade

54 ft elev

10K· 6.21 mi

10:07/mi

1:01:16

↑ 50 ft↓ 81 ft0.2% grade

24 ft elev

15K· 9.32 mi

10:42/mi

1:34:28

↑ 44 ft↓ 51 ft

18 ft elev

20K· 12.43 mi

10:54/mi

2:08:17

↑ 67 ft↓ 40 ft0.2% grade

45 ft elev

Half· 13.10 mi

11:16/mi

2:15:50

↓ 27 ft0.6% grade

25 ft elev

25K· 15.53 mi

11:13/mi

2:43:08

↑ 50 ft↓ 63 ft0.1% grade

12 ft elev

30K· 18.64 mi

12:37/mi

3:22:19

↑ 69 ft↓ 46 ft0.1% grade

35 ft elev

35K· 21.75 mi

12:36/mi

4:01:27

↑ 87 ft↓ 88 ft

34 ft elev

40K· 24.85 mi

13:31/mi

4:43:26

↑ 58 ft↓ 75 ft0.1% grade

17 ft elev

Finish· 26.22 mi

11:09/mi

4:58:38

↑ 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

2:15:5010:23 /mi⚡ faster

2nd Half

2:42:4812:25 /mi+19.9%

Positive split — 19.9% slower in the second half

AI Race Performance Report

Rebecca'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	29:52	9:37	3.11 mi	29:52	9:37	-
10K	1:01:16	9:52	3.10 mi	31:24	10:07	+0:30
15K	1:34:28	10:09	3.11 mi	33:12	10:42	+0:35
20K	2:08:17	10:20	3.11 mi	33:49	10:54	+0:12
Half(13.10 mi)	2:15:50	10:23	0.67 mi	7:33	11:16	+0:22
25K	2:43:08	10:31	2.43 mi	27:18	11:13	-0:03
30K	3:22:19	10:52	3.11 mi	39:11	12:37	+1:24
35K	4:01:27	11:07	3.11 mi	39:08	12:36	-0:01
40K	4:43:26	11:25	3.10 mi	41:59	13:31	+0:55
Finish(26.22 mi)	4:58:38	11:24	1.37 mi	15:12	11:09	-2:22

Trend:

Faster pace

Steady pace

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Checkpoints & Pacing

Pace Line

Fastest Pace

9:37 /mi

Average Pace

11:24 /mi

Slowest Pace

13:31 /mi

Loading chart...

Fastest

Middle

Slowest

Average

Segments

Time at Faster Pace

1:01:16

21% of race

Time at Steady Pace

1:57:04

39% of race

Time at Slower Pace

2:00:18

40% of race

Average Pace: 11:23 /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	34583	10724	10724	39048	13024	13024
10K	3.10 mi	36009-1426	11411-687	11411-687	37474	12173	12173
15K	3.11 mi	37014-1005	11917-506	11917-506	39048	13024	13024
20K	3.11 mi	38059-1045	12545-628	12545-628	40886	14302	14302
Half(13.10 mi)	0.67 mi	38180-121	12635-90	12635-90	40930	14569	14569
25K	2.43 mi	38073+107	12712-77	12712-77	38359	13420	13420
30K	3.11 mi	39042-969	13393-681	13393-681	42431	16018	16018
35K	3.11 mi	38954+88	13572-179	13572-179	38507	14607	14607
40K	3.10 mi	39975-1021	14296-724	14296-724	45435	18406	18406
Finish(26.22 mi)	1.37 mi	39714+261	14226+70	14226+70	32900	12358	12358

12358

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