Jenna Johnstone

Bib: 50019 F GB

0:00

0:00

/ mi

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Overall

#0 / 59786

Top 27%

Gender (Female)

#0 / 26115

Top 17%

Division (F18-39)

#0 / 14744

Top 18%

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

7:41/mi

23:52

↑ 49 ft↓ 125 ft0.5% grade

54 ft elev

10K· 6.21 mi

7:55/mi

48:27

↑ 50 ft↓ 81 ft0.2% grade

24 ft elev

15K· 9.32 mi

8:10/mi

1:13:47

↑ 44 ft↓ 51 ft

18 ft elev

20K· 12.43 mi

8:11/mi

1:39:11

↑ 67 ft↓ 40 ft0.2% grade

45 ft elev

Half· 13.10 mi

8:35/mi

1:44:56

↓ 27 ft0.6% grade

25 ft elev

25K· 15.53 mi

9:08/mi

2:07:10

↑ 50 ft↓ 63 ft0.1% grade

12 ft elev

30K· 18.64 mi

10:07/mi

2:38:33

↑ 69 ft↓ 46 ft0.1% grade

35 ft elev

35K· 21.75 mi

9:55/mi

3:09:20

↑ 87 ft↓ 88 ft

34 ft elev

40K· 24.85 mi

9:25/mi

3:38:34

↑ 58 ft↓ 75 ft0.1% grade

17 ft elev

Finish· 26.22 mi

8:26/mi

3:50:03

↑ 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

1:44:568:01 /mi⚡ faster

2nd Half

2:05:079:33 /mi+19.2%

Positive split — 19.2% slower in the second half

AI Race Performance Report

Jenna'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	23:52	7:41	3.11 mi	23:52	7:41	-
10K	48:27	7:48	3.10 mi	24:35	7:55	+0:14
15K	1:13:47	7:55	3.11 mi	25:20	8:10	+0:15
20K	1:39:11	7:59	3.11 mi	25:24	8:11	+0:01
Half(13.10 mi)	1:44:56	8:01	0.67 mi	5:45	8:35	+0:24
25K	2:07:10	8:12	2.43 mi	22:14	9:08	+0:33
30K	2:38:33	8:31	3.11 mi	31:23	10:07	+0:59
35K	3:09:20	8:43	3.11 mi	30:47	9:55	-0:12
40K	3:38:34	8:48	3.10 mi	29:14	9:25	-0:30
Finish(26.22 mi)	3:50:03	8:47	1.37 mi	11:29	8:26	-0:59

Trend:

Faster pace

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Checkpoints & Pacing

Pace Line

Fastest Pace

7:41 /mi

Average Pace

8:47 /mi

Slowest Pace

10:07 /mi

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Fastest

Middle

Slowest

Average

Segments

Time at Faster Pace

1:13:47

32% of race

Time at Steady Pace

42:38

19% of race

Time at Slower Pace

1:53:38

49% of race

Average Pace: 8:46 /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	10636	2119	2119	12685	2790	2790
10K	3.10 mi	11173-537	2320-201	2320-201	11934	2601	2601
15K	3.11 mi	11549-376	2451-131	2451-131	12685	2790	2790
20K	3.11 mi	12383-834	2732-281	2732-281	14857	3499	3499
Half(13.10 mi)	0.67 mi	12647-264	2806-74	2806-74	16395	4081	4081
25K	2.43 mi	14299-1652	3350-544	3350-544	22057	6117	6117
30K	3.11 mi	16420-2121	4125-775	4125-775	26255	8087	8087
35K	3.11 mi	17103-683	4477-352	4477-352	21206	6544	6544
40K	3.10 mi	16822+281	4513-36	4513-36	16687	5249	5249
Finish(26.22 mi)	1.37 mi	16334+488	4408+105	4408+105	10478	2875	2875

2875

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