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LONDON MARATHON MASS 2026

Gemma Chester

Bib: 64075 F GB

0:00
0:00
/ mi
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Overall
#0 / 59786
Gender (Female)
#0 / 26115
Division (F18-39)
#0 / 14744
Race Day Weather
56°/46°F
overcast clouds

Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
13:33/mi
42:03
↑ 49↓ 125
10K· 6.21 mi
14:18/mi
1:26:28
↑ 50↓ 81
15K· 9.32 mi
15:25/mi
2:14:21
↑ 44↓ 51
20K· 12.43 mi
15:30/mi
3:02:28
↑ 67↓ 40
Half· 13.10 mi
15:24/mi
3:12:48
↓ 27
25K· 15.53 mi
20:37/mi
4:02:59
↑ 50↓ 63
30K· 18.64 mi
14:57/mi
4:49:25
↑ 69↓ 46
35K· 21.75 mi
15:27/mi
5:37:23
↑ 87↓ 88
40K· 24.85 mi
14:31/mi
6:22:26
↑ 58↓ 75
Finish· 26.22 mi
13:11/mi
6:40:24
↑ 14↓ 18
Course Elevation
6–172 ft
≈
×14story building
•▲ 503 ft climb · ▼ 613 ft descent

The Course

Half Splits

1st Half· via Half
3:12:4814:44 /mi⚡ faster
2nd Half
3:27:3615:50 /mi+7.7%
Positive split — 7.7% slower in the second half
Is this your race?

Your race, unpacked

See your splits, ranks & AI insights.

Checkpoint Splits

CheckpointTimeAvg PaceSegment LengthSegment TimeSegment PaceTrendDiff
5K
42:0313:333.11 mi42:03
13:33
-
10K
1:26:2813:553.10 mi44:25
14:18
+0:45
15K
2:14:2114:253.11 mi47:53
15:25
+1:07
20K
3:02:2814:413.11 mi48:07
15:30
+0:05
Half(13.10 mi)
3:12:4814:440.67 mi10:20
15:24
-0:06
25K
4:02:5915:392.43 mi50:11
20:37
+5:13
30K
4:49:2515:323.11 mi46:26
14:57
-5:40
35K
5:37:2315:313.11 mi47:58
15:27
+0:30
40K
6:22:2615:243.10 mi45:03
14:31
-0:56
Finish(26.22 mi)
6:40:2415:171.37 mi17:58
13:11
-1:20
Trend:
Faster pace
Steady pace
Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

13:11 /mi

Average Pace

15:17 /mi

Slowest Pace

20:37 /mi

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Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

1:44:26

26% of race

Time at Steady Pace

4:05:47

61% of race

Time at Slower Pace

50:11

13% of race

Average Pace: 15:16 /mi

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Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

Heatmap

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0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Checkpoint and Segment Rankings

CheckpointSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi580572481324813579962480024800
10K3.10 mi57971+8624750+6324750+63577512461324613
15K3.11 mi58074-10324836-8624836-86579962480024800
20K3.11 mi57935+13924742+9424742+94574312444424444
Half(13.10 mi)0.67 mi57885+5024712+3024712+30566532408024080
25K2.43 mi58515-63025170-45825170-458593112577925779
30K3.11 mi57998+51724805+36524805+365525142165721657
35K3.11 mi57591+40724556+24924556+249521412178921789
40K3.10 mi57133+45824270+28624270+286506522109421094
Finish(26.22 mi)1.37 mi56884+24924122+14824122+148474431940419404

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 97%
×10story building
+49ft-125ft

Overall

57996

Females

24800

F18-39

24800

5K→10K

3.1 - 6.2 mi

Top 97%
×4story building
+50ft-81ft

Overall

57751

Females

24613

F18-39

24613

10K→15K

6.2 - 9.3 mi

Top 97%
×1story
+44ft-51ft

Overall

57996

Females

24800

F18-39

24800

15K→20K

9.3 - 12.4 mi

Top 96%
×3story building
+67ft-40ft

Overall

57431

Females

24444

F18-39

24444

20K→Half

12.4 - 13.1 mi

Top 95%
×2story building
+8ft-27ft

Overall

56653

Females

24080

F18-39

24080

Half→25K

13.1 - 15.5 mi

Top 99%
×2story building
+50ft-63ft

Overall

59311

Females

25779

F18-39

25779

25K→30K

15.5 - 18.6 mi

Top 88%
×2story building
+69ft-46ft

Overall

52514

Females

21657

F18-39

21657

30K→35K

18.6 - 21.8 mi

Top 87%
×2story building
+87ft-88ft

Overall

52141

Females

21789

F18-39

21789

35K→40K

21.8 - 24.9 mi

Top 85%
×3story building
+58ft-75ft

Overall

50652

Females

21094

F18-39

21094

40K→Finish

24.9 - 26.2 mi

Top 79%
×1story
+14ft-18ft

Overall

47443

Females

19404

F18-39

19404

Passing Analysis

Category:
▲Net Change
+0
0 passed by0 passed
SegmentMovementRank
Start → 5K-#58057
5K → 10K
235321+86
#58057 → #57971
10K → 15K
274171-103
#57971 → #58074
15K → 20K
103242+139
#58074 → #57935
20K → Half
1464+50
#57935 → #57885
Half → 25K
65828-630
#57885 → #58515
25K → 30K
7524+517
#58515 → #57998
30K → 35K
5412+407
#57998 → #57591
35K → 40K
4462+458
#57591 → #57133
40K → Finish
3252+249
#57133 → #56884
TOTALS
13032476+1173
#58057 → #56884

Passing Visualized

Category:
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Passing Circle

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Position Flow

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Race Lanes

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Public Race Data

London Marathon Events

London Marathon Events

Mika Timing

Mika Timing