TCS London Marathon 2026 logo
LONDON MARATHON MASS 2026

Gemma Whellams

Bib: 65110 F GB

0:00
0:00
/ mi
Masters
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Overall
#0 / 59786
Gender (Female)
#0 / 26115
Masters (Masters Women)
#0 / 11371
Division (F40-44)
#0 / 3355
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
11:20/mi
35:10
↑ 49↓ 125
10K· 6.21 mi
11:29/mi
1:10:48
↑ 50↓ 81
15K· 9.32 mi
12:12/mi
1:48:41
↑ 44↓ 51
20K· 12.43 mi
11:52/mi
2:25:30
↑ 67↓ 40
Half· 13.10 mi
12:30/mi
2:33:53
↓ 27
25K· 15.53 mi
12:30/mi
3:04:18
↑ 50↓ 63
30K· 18.64 mi
27:51/mi
4:30:49
↑ 69↓ 46
35K· 21.75 mi
13:22/mi
5:12:20
↑ 87↓ 88
40K· 24.85 mi
13:26/mi
5:54:04
↑ 58↓ 75
Finish· 26.22 mi
12:42/mi
6:11:23
↑ 14↓ 18
Course Elevation
503ft
Total climb
166ft
Range
6 to 172 ft
×14
613ft
Total descent

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The Course

Half Splits

1st Half· via Half
2:33:5311:45 /mi⚡ faster
2nd Half
3:37:3016:35 /mi+41.3%
Positive split — 41.3% slower in the second half
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Your race, unpacked

See your splits, ranks & AI insights.

Checkpoint Splits

CheckpointTimeAvg PaceSegment LengthSegment TimeSegment PaceTrendDiff
5K
35:1011:203.11 mi35:10
11:20
-
10K
1:10:4811:243.10 mi35:38
11:29
+0:09
15K
1:48:4111:403.11 mi37:53
12:12
+0:43
20K
2:25:3011:433.11 mi36:49
11:52
-0:20
Half(13.10 mi)
2:33:5311:450.67 mi8:23
12:30
+0:38
25K
3:04:1811:522.43 mi30:25
12:30
0:00
30K
4:30:4914:323.11 mi1:26:31
27:51
+15:21
35K
5:12:2014:223.11 mi41:31
13:22
-14:29
40K
5:54:0414:153.10 mi41:44
13:26
+0:04
Finish(26.22 mi)
6:11:2314:111.37 mi17:19
12:42
-0:44
Trend:
Faster pace
Steady pace
Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

11:20 /mi

Average Pace

14:10 /mi

Slowest Pace

27:51 /mi

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Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

0:00

0% of race

Time at Steady Pace

4:44:52

77% of race

Time at Slower Pace

1:26:31

23% of race

Average Pace: 14:10 /mi

Loading chart...
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. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi506421966119661494281904519045
10K3.10 mi49770+87219128+53319128+533489851865318653
15K3.11 mi49576+19419029+9919029+99494281904519045
20K3.11 mi48780+79618617+41218617+412470441781217812
Half(13.10 mi)0.67 mi48731+4918597+2018597+20481941879918799
25K2.43 mi48008+72318252+34518252+345452891718617186
30K3.11 mi56402-839423721-546923721-5469597502609926099
35K3.11 mi55326+107623039+68223039+682428191683116831
40K3.10 mi54543+78322593+44622593+446450001819218192
Finish(26.22 mi)1.37 mi54218+32522419+17422419+174447021798517985

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 83%
×10
+49ft-125ft

Overall

49428

Females

19045

F40-44

19045

5K→10K

3.1 - 6.2 mi

Top 82%
×4
+50ft-81ft

Overall

48985

Females

18653

F40-44

18653

10K→15K

6.2 - 9.3 mi

Top 83%
+44ft-51ft

Overall

49428

Females

19045

F40-44

19045

15K→20K

9.3 - 12.4 mi

Top 79%
×3
+67ft-40ft

Overall

47044

Females

17812

F40-44

17812

20K→Half

12.4 - 13.1 mi

Top 81%
×2
+8ft-27ft

Overall

48194

Females

18799

F40-44

18799

Half→25K

13.1 - 15.5 mi

Top 76%
×2
+50ft-63ft

Overall

45289

Females

17186

F40-44

17186

25K→30K

15.5 - 18.6 mi

Top 100%
×2
+69ft-46ft

Overall

59750

Females

26099

F40-44

26099

30K→35K

18.6 - 21.8 mi

Top 72%
×2
+87ft-88ft

Overall

42819

Females

16831

F40-44

16831

35K→40K

21.8 - 24.9 mi

Top 75%
×3
+58ft-75ft

Overall

45000

Females

18192

F40-44

18192

40K→Finish

24.9 - 26.2 mi

Top 75%
+14ft-18ft

Overall

44702

Females

17985

F40-44

17985

Passing Analysis

Category:
▼Net Change
0
0 passed by0 passed
SegmentMovementRank
Start → 5K-#50642
5K → 10K
3171189+872
#50642 → #49770
10K → 15K
499693+194
#49770 → #49576
15K → 20K
160956+796
#49576 → #48780
20K → Half
99148+49
#48780 → #48731
Half → 25K
127850+723
#48731 → #48008
25K → 30K
84039-8394
#48008 → #56402
30K → 35K
41080+1076
#56402 → #55326
35K → 40K
6789+783
#55326 → #54543
40K → Finish
6331+325
#54543 → #54218
TOTALS
96216045-3576
#50642 → #54218

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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