Roisin Lacey

Bib: 54919 F GB

0:00

0:00

/ mi

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Overall

#0 / 59786

Top 30%

Gender (Female)

#0 / 26115

Top 19%

Division (F18-39)

#0 / 14744

Top 20%

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

8:13/mi

25:31

↑ 49 ft↓ 125 ft0.5% grade

54 ft elev

10K· 6.21 mi

8:25/mi

51:38

↑ 50 ft↓ 81 ft0.2% grade

24 ft elev

15K· 9.32 mi

8:35/mi

1:18:17

↑ 44 ft↓ 51 ft

18 ft elev

20K· 12.43 mi

8:14/mi

1:43:51

↑ 67 ft↓ 40 ft0.2% grade

45 ft elev

Half· 13.10 mi

8:32/mi

1:49:34

↓ 27 ft0.6% grade

25 ft elev

25K· 15.53 mi

8:26/mi

2:10:05

↑ 50 ft↓ 63 ft0.1% grade

12 ft elev

30K· 18.64 mi

9:40/mi

2:40:06

↑ 69 ft↓ 46 ft0.1% grade

35 ft elev

35K· 21.75 mi

9:40/mi

3:10:06

↑ 87 ft↓ 88 ft

34 ft elev

40K· 24.85 mi

9:47/mi

3:40:28

↑ 58 ft↓ 75 ft0.1% grade

17 ft elev

Finish· 26.22 mi

10:14/mi

3:54:25

↑ 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

1:49:348:22 /mi⚡ faster

2nd Half

2:04:519:31 /mi+13.9%

Positive split — 13.9% slower in the second half

AI Race Performance Report

Roisin'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	25:31	8:13	3.11 mi	25:31	8:13	-
10K	51:38	8:19	3.10 mi	26:07	8:25	+0:12
15K	1:18:17	8:24	3.11 mi	26:39	8:35	+0:10
20K	1:43:51	8:22	3.11 mi	25:34	8:14	-0:21
Half(13.10 mi)	1:49:34	8:22	0.67 mi	5:43	8:32	+0:18
25K	2:10:05	8:23	2.43 mi	20:31	8:26	-0:06
30K	2:40:06	8:36	3.11 mi	30:01	9:40	+1:14
35K	3:10:06	8:45	3.11 mi	30:01	9:40	0:00
40K	3:40:28	8:53	3.10 mi	30:22	9:47	+0:07
Finish(26.22 mi)	3:54:25	8:57	1.37 mi	13:57	10:14	+0:27

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

8:13 /mi

Average Pace

8:57 /mi

Slowest Pace

10:14 /mi

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Fastest

Middle

Slowest

Average

Segments

Time at Faster Pace

25:31

11% of race

Time at Steady Pace

1:44:34

45% of race

Time at Slower Pace

1:44:20

45% of race

Average Pace: 8:56 /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	16588	4064	4064	16989	4177	4177
10K	3.10 mi	16982-394	4194-130	4194-130	17455	4357	4357
15K	3.11 mi	16943+39	4164+30	4164+30	16989	4177	4177
20K	3.11 mi	16442+501	4013+151	4013+151	15376	3680	3680
Half(13.10 mi)	0.67 mi	16401+41	4002+11	4002+11	15946	3944	3944
25K	2.43 mi	16104+297	3945+57	3945+57	15158	3731	3731
30K	3.11 mi	17225-1121	4404-459	4404-459	23083	6788	6788
35K	3.11 mi	17432-207	4581-177	4581-177	19499	5893	5893
40K	3.10 mi	17533-101	4742-161	4742-161	19297	6249	6249
Finish(26.22 mi)	1.37 mi	17881-348	4942-200	4942-200	24946	8659	8659

8659

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