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LONDON MARATHON MASS 2026

Thomas Whelan

Bib: 39155•M

0:00
0:00
/ mi
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Overall
#0 / 59786
Top 7%
Gender (Male)
#0 / 33594
Top 11%
Division (M18-39)
#0 / 16712
Top 13%
Race Day Weather
56°/46°F
overcast clouds

⏱️ Race Timeline

Course Elevation
6–172 ft
≈
×14story building
•▲ 503 ft climb · ▼ 613 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
6:40/mi
20:42
↑ 49↓ 1250.5%
10K· 6.21 mi
6:52/mi
41:59
↑ 50↓ 810.2%
15K· 9.32 mi
6:59/mi
1:03:38
↑ 44↓ 51
20K· 12.43 mi
6:45/mi
1:24:34
↑ 67↓ 400.2%
Half· 13.10 mi
6:55/mi
1:29:12
↓ 270.6%
25K· 15.53 mi
6:49/mi
1:45:46
↑ 50↓ 630.1%
30K· 18.64 mi
6:55/mi
2:07:13
↑ 69↓ 460.1%
35K· 21.75 mi
7:05/mi
2:29:12
↑ 87↓ 88
40K· 24.85 mi
7:42/mi
2:53:07
↑ 58↓ 750.1%
Finish· 26.22 mi
8:23/mi
3:04:33
↑ 14↓ 18

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.10 mi
Time1:29:12
Pace6:49 /mi
2nd Half
Distance13.12 mi
Time1:35:21
Pace7:17 /mi
📊Positive Split: 6.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:02:2420:426:4020:42
6:40
-
10K
6.21 mi10:23:4141:596:4621:17
6:52
+0:12
15K
9.32 mi10:45:201:03:386:5021:39
6:59
+0:07
20K
12.43 mi11:06:161:24:346:4920:56
6:45
-0:14
Half
13.10 mi11:10:541:29:126:494:38
6:55
+0:10
25K
15.53 mi11:27:281:45:466:4916:34
6:49
-0:06
30K
18.64 mi11:48:552:07:136:5021:27
6:55
+0:06
35K
21.75 mi12:10:542:29:126:5221:59
7:05
+0:10
40K
24.85 mi12:34:492:53:076:5823:55
7:42
+0:37
Finish
26.22 mi12:46:153:04:337:0311:26
8:23
+0:41

Checkpoints & Pacing

📈Pace Line

Pace Progression

Track your pace changes throughout the race. Dot colors mark your quickest to easiest segments, relative to your own pace.

Fastest Pace

6:40 /mi

Average Pace

7:03 /mi

Slowest Pace

8:23 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

0:00

0% of race

Time at Steady Pace

2:29:12

81% of race

Time at Slower Pace

35:21

19% of race

Average Pace: 7:02 /mi

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

🎨Heatmap

Pace Heatmap

Where you sped up and eased off relative to your own pace across the race. Colors are relative to your own range, not to other runners.

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

Click or hover over segments to see details

✨Sparklines

Checkpoint Splits with Pace Trends

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi10:02:2420:426:4020:42
6:40
#3566
10K
6.21 mi10:23:4141:596:4621:17
6:52
#3930
15K
9.32 mi10:45:201:03:386:5021:39
6:59
#4018
20K
12.43 mi11:06:161:24:346:4920:56
6:45
#3924
Half
13.10 mi11:10:541:29:126:494:38
6:55
#3911
25K
15.53 mi11:27:281:45:466:4916:34
6:49
#3839
30K
18.64 mi11:48:552:07:136:5021:27
6:55
#3680
35K
21.75 mi12:10:542:29:126:5221:59
7:05
#3597
40K
24.85 mi12:34:492:53:076:5823:55
7:42
#3813
Finish
26.22 mi12:46:153:04:337:0311:26
8:23
#3964
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi3566327332734282(Top 7%)3918(Top 12%)3918(Top 23%)
10K6.21 mi3.10 mi3930-3643601-3283601-3284522(Top 8%)4126(Top 12%)4126(Top 25%)
15K9.32 mi3.11 mi4018-883687-863687-864282(Top 7%)3918(Top 12%)3918(Top 23%)
20K12.43 mi3.11 mi3924+943609+783609+783773(Top 6%)3491(Top 10%)3491(Top 21%)
Half13.10 mi0.67 mi3911+133595+143595+143772(Top 6%)3500(Top 10%)3500(Top 21%)
25K15.53 mi2.43 mi3839+723536+593536+593618(Top 6%)3341(Top 10%)3341(Top 20%)
30K18.64 mi3.11 mi3680+1593401+1353401+1353252(Top 5%)3015(Top 9%)3015(Top 18%)
35K21.75 mi3.11 mi3597+833319+823319+823449(Top 6%)3149(Top 9%)3149(Top 19%)
40K24.85 mi3.10 mi3813-2163473-1543473-1545430(Top 9%)4445(Top 13%)4445(Top 27%)
Finish26.22 mi1.37 mi3964-1513588-1153588-11510146(Top 17%)7380(Top 22%)7380(Top 44%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 7%
×10story building
+49ft-125ft

Overall

4282

Males

3918

M18-39

3918

5K→10K

3.1 - 6.2 mi

Top 8%
×4story building
+50ft-81ft

Overall

4522

Males

4126

M18-39

4126

10K→15K

6.2 - 9.3 mi

Top 7%
×1story
+44ft-51ft

Overall

4282

Males

3918

M18-39

3918

15K→20K

9.3 - 12.4 mi

Top 6%
×3story building
+67ft-40ft

Overall

3773

Males

3491

M18-39

3491

20K→Half

12.4 - 13.1 mi

Top 6%
×2story building
+8ft-27ft

Overall

3772

Males

3500

M18-39

3500

Half→25K

13.1 - 15.5 mi

Top 6%
×2story building
+50ft-63ft

Overall

3618

Males

3341

M18-39

3341

25K→30K

15.5 - 18.6 mi

Top 5%
×2story building
+69ft-46ft

Overall

3252

Males

3015

M18-39

3015

30K→35K

18.6 - 21.8 mi

Top 6%
×2story building
+87ft-88ft

Overall

3449

Males

3149

M18-39

3149

35K→40K

21.8 - 24.9 mi

Top 9%
×3story building
+58ft-75ft

Overall

5430

Males

4445

M18-39

4445

40K→Finish

24.9 - 26.2 mi

Top 17%
×1story
+14ft-18ft

Overall

10146

Males

7380

M18-39

7380

Passing Analysis

Category:
Athletes Passed
841
Passed By
954
Net Change
-398
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3566
5K → 10K19200-364#3566#3930
10K → 15K61149-88#3930#4018
15K → 20K13945+94#4018#3924
20K → Half2512+13#3924#3911
Half → 25K9826+72#3911#3839
25K → 30K20243+159#3839#3680
30K → 35K192109+83#3680#3597
35K → 40K86200-216#3597#3813
40K → Finish19170-151#3813#3964
TOTALS841954-398
📊

Passing Visuals

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