Callum Williams
Bib: 52302 M GB
Race Timeline
The Course
Half Splits
Your race, unpacked
See your splits, ranks & AI insights.
Checkpoint Splits
| Checkpoint | Time | Avg Pace | Segment Length | Segment Time | Segment Pace | Trend | Diff |
|---|---|---|---|---|---|---|---|
5K | 24:28 | 7:53 | 3.11 mi | 24:28 | 7:53 | - | |
10K | 48:58 | 7:53 | 3.10 mi | 24:30 | 7:54 | +0:01 | |
15K | 1:14:15 | 7:58 | 3.11 mi | 25:17 | 8:09 | +0:15 | |
20K | 1:39:16 | 8:00 | 3.11 mi | 25:01 | 8:04 | -0:05 | |
Half(13.10 mi) | 1:44:50 | 8:01 | 0.67 mi | 5:34 | 8:18 | +0:14 | |
25K | 2:05:36 | 8:06 | 2.43 mi | 20:46 | 8:32 | +0:14 | |
30K | 2:31:53 | 8:09 | 3.11 mi | 26:17 | 8:28 | -0:04 | |
35K | 2:59:04 | 8:15 | 3.11 mi | 27:11 | 8:45 | +0:17 | |
40K | 3:28:01 | 8:23 | 3.10 mi | 28:57 | 9:20 | +0:35 | |
Finish(26.22 mi) | 3:39:26 | 8:23 | 1.37 mi | 11:25 | 8:23 | -0:57 |
Checkpoints & Pacing
Pace Line
Fastest Pace
7:53 /mi
Average Pace
8:23 /mi
Slowest Pace
9:20 /mi
Segments
Time at Faster Pace
2:43:18
74% of race
Time at Steady Pace
27:11
12% of race
Time at Slower Pace
28:57
13% of race
Average Pace: 8:22 /mi
Heatmap
Checkpoint and Segment Rankings
| Checkpoint | Seg. Dist | Overall | Males | M18-39 | Seg. Overall | Seg. Males | Seg. M18-39 |
|---|---|---|---|---|---|---|---|
| 5K | 3.11 mi | 12620 | 9813 | 9813 | 12431 | 9710 | 9710 |
| 10K | 3.10 mi | 12037+583 | 9399+414 | 9399+414 | 11621 | 9123 | 9123 |
| 15K | 3.11 mi | 12088-51 | 9445-46 | 9445-46 | 12431 | 9710 | 9710 |
| 20K | 3.11 mi | 12455-367 | 9694-249 | 9694-249 | 13610 | 10512 | 10512 |
| Half(13.10 mi) | 0.67 mi | 12554-99 | 9766-72 | 9766-72 | 13666 | 10499 | 10499 |
| 25K | 2.43 mi | 13180-626 | 10180-414 | 10180-414 | 15951 | 11950 | 11950 |
| 30K | 3.11 mi | 12959+221 | 9978+202 | 9978+202 | 12831 | 9761 | 9761 |
| 35K | 3.11 mi | 12712+247 | 9722+256 | 9722+256 | 12524 | 9223 | 9223 |
| 40K | 3.10 mi | 12912-200 | 9720+2 | 9720+2 | 15973 | 10980 | 10980 |
| Finish(26.22 mi) | 1.37 mi | 12626+286 | 9486+234 | 9486+234 | 10080 | 7361 | 7361 |
Segment Performance Analysis
10K→15K
0.0 - 3.1 mi
Overall
12431
Males
9710
M18-39
9710
5K→10K
3.1 - 6.2 mi
Overall
11621
Males
9123
M18-39
9123
10K→15K
6.2 - 9.3 mi
Overall
12431
Males
9710
M18-39
9710
15K→20K
9.3 - 12.4 mi
Overall
13610
Males
10512
M18-39
10512
20K→Half
12.4 - 13.1 mi
Overall
13666
Males
10499
M18-39
10499
Half→25K
13.1 - 15.5 mi
Overall
15951
Males
11950
M18-39
11950
25K→30K
15.5 - 18.6 mi
Overall
12831
Males
9761
M18-39
9761
30K→35K
18.6 - 21.8 mi
Overall
12524
Males
9223
M18-39
9223
35K→40K
21.8 - 24.9 mi
Overall
15973
Males
10980
M18-39
10980
40K→Finish
24.9 - 26.2 mi
Overall
10080
Males
7361
M18-39
7361
Passing Analysis
| Segment | Movement | Rank |
|---|---|---|
| Start → 5K | - | #12620 |
| 5K → 10K | 130713+583 | #12620 → #12037 |
| 10K → 15K | 263212-51 | #12037 → #12088 |
| 15K → 20K | 501134-367 | #12088 → #12455 |
| 20K → Half | 12425-99 | #12455 → #12554 |
| Half → 25K | 734108-626 | #12554 → #13180 |
| 25K → 30K | 223444+221 | #13180 → #12959 |
| 30K → 35K | 258505+247 | #12959 → #12712 |
| 35K → 40K | 521321-200 | #12712 → #12912 |
| 40K → Finish | 26312+286 | #12912 → #12626 |
| TOTALS | 27802774-6 | #12620 → #12626 |
Passing Visualized
Passing Circle
Position Flow
Race Lanes
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Public Race Data
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Race managed by
London Marathon Events
Race timed by
Mika Timing
