Jemma Jeffery

Bib: 13280 F GB

0:00

0:00

/ mi

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Overall

#0 / 59786

Gender (Female)

#0 / 26115

Top 46%

Division (F18-39)

#0 / 14744

Top 48%

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

10:05/mi

31:19

↑ 49 ft↓ 125 ft0.5% grade

54 ft elev

10K· 6.21 mi

9:54/mi

1:02:04

↑ 50 ft↓ 81 ft0.2% grade

24 ft elev

15K· 9.32 mi

10:10/mi

1:33:37

↑ 44 ft↓ 51 ft

18 ft elev

20K· 12.43 mi

9:51/mi

2:04:11

↑ 67 ft↓ 40 ft0.2% grade

45 ft elev

Half· 13.10 mi

10:14/mi

2:11:03

↓ 27 ft0.6% grade

25 ft elev

25K· 15.53 mi

11:19/mi

2:38:36

↑ 50 ft↓ 63 ft0.1% grade

12 ft elev

30K· 18.64 mi

10:41/mi

3:11:47

↑ 69 ft↓ 46 ft0.1% grade

35 ft elev

35K· 21.75 mi

12:40/mi

3:51:07

↑ 87 ft↓ 88 ft

34 ft elev

40K· 24.85 mi

12:17/mi

4:29:16

↑ 58 ft↓ 75 ft0.1% grade

17 ft elev

Finish· 26.22 mi

11:20/mi

4:44:43

↑ 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

2:11:0310:01 /mi⚡ faster

2nd Half

2:33:4011:43 /mi+17.3%

Positive split — 17.3% slower in the second half

AI Race Performance Report

Jemma'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	31:19	10:05	3.11 mi	31:19	10:05	-
10K	1:02:04	10:00	3.10 mi	30:45	9:54	-0:11
15K	1:33:37	10:03	3.11 mi	31:33	10:10	+0:16
20K	2:04:11	10:00	3.11 mi	30:34	9:51	-0:19
Half(13.10 mi)	2:11:03	10:01	0.67 mi	6:52	10:14	+0:23
25K	2:38:36	10:13	2.43 mi	27:33	11:19	+1:05
30K	3:11:47	10:18	3.11 mi	33:11	10:41	-0:38
35K	3:51:07	10:38	3.11 mi	39:20	12:40	+1:59
40K	4:29:16	10:51	3.10 mi	38:09	12:17	-0:23
Finish(26.22 mi)	4:44:43	10:53	1.37 mi	15:27	11:20	-0:57

Trend:

Faster pace

Steady pace

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Checkpoints & Pacing

Pace Line

Fastest Pace

9:51 /mi

Average Pace

10:52 /mi

Slowest Pace

12:40 /mi

Loading chart...

Fastest

Middle

Slowest

Average

Segments

Time at Faster Pace

2:04:11

44% of race

Time at Steady Pace

40:03

14% of race

Time at Slower Pace

2:00:29

42% of race

Average Pace: 10:52 /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	39548	13172	13172	34256	10669	10669
10K	3.10 mi	37303+2245	12049+1123	12049+1123	35516	11214	11214
15K	3.11 mi	36088+1215	11472+577	11472+577	34256	10669	10669
20K	3.11 mi	34946+1142	11013+459	11013+459	32088	9881	9881
Half(13.10 mi)	0.67 mi	34759+187	10945+68	10945+68	32668	10337	10337
25K	2.43 mi	35477-718	11418-473	11418-473	39044	13751	13751
30K	3.11 mi	34273+1204	11043+375	11043+375	30462	10014	10014
35K	3.11 mi	35161-888	11711-668	11711-668	38881	14799	14799
40K	3.10 mi	35397-236	12022-311	12022-311	37451	14514	14514
Finish(26.22 mi)	1.37 mi	35264+133	12032-10	12032-10	34483	13092	13092

13092

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