Iona Cassie

Bib: 21220 F GB

0:00

0:00

/ mi

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Overall

#0 / 59786

Top 33%

Gender (Female)

#0 / 26115

Top 22%

Division (F18-39)

#0 / 14744

Top 23%

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

8:38/mi

26:49

↑ 49 ft↓ 125 ft0.5% grade

54 ft elev

10K· 6.21 mi

8:52/mi

54:20

↑ 50 ft↓ 81 ft0.2% grade

24 ft elev

15K· 9.32 mi

9:03/mi

1:22:26

↑ 44 ft↓ 51 ft

18 ft elev

20K· 12.43 mi

8:52/mi

1:49:58

↑ 67 ft↓ 40 ft0.2% grade

45 ft elev

Half· 13.10 mi

9:12/mi

1:56:08

↓ 27 ft0.6% grade

25 ft elev

25K· 15.53 mi

9:04/mi

2:18:12

↑ 50 ft↓ 63 ft0.1% grade

12 ft elev

30K· 18.64 mi

9:15/mi

2:46:55

↑ 69 ft↓ 46 ft0.1% grade

35 ft elev

35K· 21.75 mi

9:31/mi

3:16:27

↑ 87 ft↓ 88 ft

34 ft elev

40K· 24.85 mi

9:40/mi

3:46:26

↑ 58 ft↓ 75 ft0.1% grade

17 ft elev

Finish· 26.22 mi

9:22/mi

3:59:12

↑ 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

1:56:088:52 /mi⚡ faster

2nd Half

2:03:049:23 /mi+6.0%

Positive split — 6.0% slower in the second half

AI Race Performance Report

Iona'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	26:49	8:38	3.11 mi	26:49	8:38	-
10K	54:20	8:45	3.10 mi	27:31	8:52	+0:14
15K	1:22:26	8:51	3.11 mi	28:06	9:03	+0:11
20K	1:49:58	8:51	3.11 mi	27:32	8:52	-0:11
Half(13.10 mi)	1:56:08	8:52	0.67 mi	6:10	9:12	+0:20
25K	2:18:12	8:54	2.43 mi	22:04	9:04	-0:08
30K	2:46:55	8:58	3.11 mi	28:43	9:15	+0:11
35K	3:16:27	9:02	3.11 mi	29:32	9:31	+0:16
40K	3:46:26	9:07	3.10 mi	29:59	9:40	+0:09
Finish(26.22 mi)	3:59:12	9:08	1.37 mi	12:46	9:22	-0:18

Trend:

Faster pace

Steady pace

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Checkpoints & Pacing

Pace Line

Fastest Pace

8:38 /mi

Average Pace

9:08 /mi

Slowest Pace

9:40 /mi

Loading chart...

Fastest

Middle

Slowest

Average

Segments

Time at Faster Pace

2:59:41

75% of race

Time at Steady Pace

59:31

25% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 9:07 /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	21524	5706	5706	21906	5829	5829
10K	3.10 mi	22035-511	5897-191	5897-191	22618	6143	6143
15K	3.11 mi	21878+157	5830+67	5830+67	21906	5829	5829
20K	3.11 mi	21788+90	5811+19	5811+19	21911	5888	5888
Half(13.10 mi)	0.67 mi	21817-29	5828-17	5828-17	22867	6271	6271
25K	2.43 mi	21538+279	5784+44	5784+44	21289	5860	5860
30K	3.11 mi	20992+546	5686+98	5686+98	19608	5480	5480
35K	3.11 mi	20332+660	5611+75	5611+75	18384	5441	5441
40K	3.10 mi	20002+330	5681-70	5681-70	18451	5929	5929
Finish(26.22 mi)	1.37 mi	19955+47	5695-14	5695-14	17944	5780	5780

5780

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