Claire Duncan

Bib: 31803 F GB

Masters

0:00

0:00

/ mi

Masters

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Overall

#0 / 59786

Gender (Female)

#0 / 26115

Masters (Masters Women)

#0 / 11371

Division (F40-44)

#0 / 3355

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

10:40/mi

33:08

↑ 49 ft↓ 125 ft0.5% grade

54 ft elev

10K· 6.21 mi

10:51/mi

1:06:49

↑ 50 ft↓ 81 ft0.2% grade

24 ft elev

15K· 9.32 mi

11:24/mi

1:42:12

↑ 44 ft↓ 51 ft

18 ft elev

20K· 12.43 mi

11:24/mi

2:17:35

↑ 67 ft↓ 40 ft0.2% grade

45 ft elev

Half· 13.10 mi

11:51/mi

2:25:32

↓ 27 ft0.6% grade

25 ft elev

25K· 15.53 mi

12:10/mi

2:55:08

↑ 50 ft↓ 63 ft0.1% grade

12 ft elev

30K· 18.64 mi

16:50/mi

3:47:25

↑ 69 ft↓ 46 ft0.1% grade

35 ft elev

35K· 21.75 mi

13:07/mi

4:28:08

↑ 87 ft↓ 88 ft

34 ft elev

40K· 24.85 mi

13:43/mi

5:10:42

↑ 58 ft↓ 75 ft0.1% grade

17 ft elev

Finish· 26.22 mi

12:50/mi

5:28:12

↑ 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

2:25:3211:07 /mi⚡ faster

2nd Half

3:02:4013:56 /mi+25.5%

Positive split — 25.5% slower in the second half

AI Race Performance Report

Claire'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	33:08	10:40	3.11 mi	33:08	10:40	-
10K	1:06:49	10:46	3.10 mi	33:41	10:51	+0:11
15K	1:42:12	10:58	3.11 mi	35:23	11:24	+0:33
20K	2:17:35	11:05	3.11 mi	35:23	11:24	0:00
Half(13.10 mi)	2:25:32	11:07	0.67 mi	7:57	11:51	+0:27
25K	2:55:08	11:17	2.43 mi	29:36	12:10	+0:19
30K	3:47:25	12:12	3.11 mi	52:17	16:50	+4:40
35K	4:28:08	12:20	3.11 mi	40:43	13:07	-3:43
40K	5:10:42	12:31	3.10 mi	42:34	13:43	+0:36
Finish(26.22 mi)	5:28:12	12:32	1.37 mi	17:30	12:50	-0:53

Trend:

Faster pace

Steady pace

Slower pace

More below

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Checkpoints & Pacing

Pace Line

Fastest Pace

10:40 /mi

Average Pace

12:32 /mi

Slowest Pace

16:50 /mi

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Fastest

Middle

Slowest

Average

Segments

Time at Faster Pace

1:06:49

20% of race

Time at Steady Pace

2:05:49

38% of race

Time at Slower Pace

2:15:34

41% of race

Average Pace: 12:31 /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	F40-44	Seg. Overall	Seg. Females	Seg. F40-44
5K	3.11 mi	45376	16449	16449	44603	16089	16089
10K	3.10 mi	44722+654	16081+368	16081+368	44349	15893	15893
15K	3.11 mi	44590+132	16007+74	16007+74	44603	16089	16089
20K	3.11 mi	44481+109	16020-13	16020-13	44436	16295	16295
Half(13.10 mi)	0.67 mi	44465+16	16040-20	16040-20	44984	16910	16910
25K	2.43 mi	44194+271	16014+26	16014+26	43746	16318	16318
30K	3.11 mi	48103-3909	18434-2420	18434-2420	56742	24164	24164
35K	3.11 mi	47085+1018	17982+452	17982+452	41410	16073	16073
40K	3.10 mi	46992+93	18063-81	18063-81	46544	18968	18968
Finish(26.22 mi)	1.37 mi	46903+89	18057+6	18057+6	45508	18392	18392

18392

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