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BOSTON MARATHON 2025

Ka Keung Yam

Bib: 5782•M

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 12%
Gender (Male)
#0 / 16105
Top 20%
Division (M18-39)
#0 / 5642
Top 43%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:19
Rank: #4125
Start → 5K
20:19 | 6:32/mi
10K· 6.21 mi
40:30
Rank: #3908 (+217)
5K → 10K
20:11 | 6:30/mi
15K· 9.32 mi
1:00:34
Rank: #3686 (+222)
10K → 15K
20:04 | 6:28/mi
20K· 12.43 mi
1:20:52
Rank: #3568 (+118)
15K → 20K
20:18 | 6:32/mi
Half· 13.11 mi
1:25:19
Rank: #3581 (-13)
20K → Half
4:27 | 6:31/mi
25K· 15.53 mi
1:41:19
Rank: #3527 (+54)
Half → 25K
16:00 | 6:36/mi
30K· 18.64 mi
2:02:18
Rank: #3396 (+131)
25K → 30K
20:59 | 6:45/mi
20M
2:11:34
Rank: #3325 (+71)
30K → 20M
9:16 | 6:49/mi
21M
2:18:43
Rank: #3269 (+56)
20M → 21M
7:09 | 7:09/mi
35K· 21.75 mi
2:23:48
Rank: #3275 (-6)
21M → 35K
5:05 | 6:48/mi
23M
2:32:38
Rank: #3264 (+11)
35K → 23M
8:50 | 7:03/mi
24M
2:39:39
Rank: #3294 (-30)
23M → 24M
7:01 | 7:01/mi
40K· 24.85 mi
2:45:46
Rank: #3315 (-21)
24M → 40K
6:07 | 7:09/mi
25.2M
2:48:29
Rank: #3341 (-26)
40K → 25.2M
2:43 | 7:53/mi
Finish· 26.22 mi
2:55:41
Rank: #3403 (-62)
25.2M → Finish
7:12 | 7:04/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:25:19
Pace6:30 /mi
2nd Half
Distance13.11 mi
Time1:30:22
Pace6:54 /mi
📊Positive Split: 5.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:25:0020:196:3220:19
6:32
-
10K
6.21 mi10:45:1140:306:3120:11
6:30
-0:02
15K
9.32 mi11:05:151:00:346:3020:04
6:28
-0:02
20K
12.43 mi11:25:331:20:526:3020:18
6:32
+0:04
Half
13.11 mi11:30:001:25:196:304:27
6:31
-0:01
25K
15.53 mi11:46:001:41:196:3116:00
6:36
+0:05
30K
18.64 mi12:06:592:02:186:3420:59
6:45
+0:09
20M
20.00 mi12:16:152:11:346:359:16
6:49
+0:04
21M
21.00 mi12:23:242:18:436:367:09
7:09
+0:20
35K
21.75 mi12:28:292:23:486:375:05
6:48
-0:21
23M
23.00 mi12:37:192:32:386:388:50
7:03
+0:15
24M
24.00 mi12:44:202:39:396:397:01
7:01
-0:02
40K
24.85 mi12:50:272:45:466:406:07
7:09
+0:08
25.2M
25.20 mi12:53:102:48:296:412:43
7:53
+0:44
Finish
26.22 mi13:00:222:55:416:427:12
7:04
-0:49

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

6:28 /mi

Average Pace

6:42 /mi

Slowest Pace

7:53 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:41:19

58% of race

Time at Steady Pace

35:20

20% of race

Time at Slower Pace

39:02

22% of race

Average Pace: 6:42 /mi

Loading chart...
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 mi10:25:0020:196:3220:19
6:32
#4125
10K
6.21 mi10:45:1140:306:3120:11
6:30
#3908
15K
9.32 mi11:05:151:00:346:3020:04
6:28
#3686
20K
12.43 mi11:25:331:20:526:3020:18
6:32
#3568
Half
13.11 mi11:30:001:25:196:304:27
6:31
#3581
25K
15.53 mi11:46:001:41:196:3116:00
6:36
#3527
30K
18.64 mi12:06:592:02:186:3420:59
6:45
#3396
20M
20.00 mi12:16:152:11:346:359:16
6:49
#3325
21M
21.00 mi12:23:242:18:436:367:09
7:09
#3269
35K
21.75 mi12:28:292:23:486:375:05
6:48
#3275
23M
23.00 mi12:37:192:32:386:388:50
7:03
#3264
24M
24.00 mi12:44:202:39:396:397:01
7:01
#3294
40K
24.85 mi12:50:272:45:466:406:07
7:09
#3315
25.2M
25.20 mi12:53:102:48:296:412:43
7:53
#3341
Finish
26.22 mi13:00:222:55:416:427:12
7:04
#3403
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi4125388938893306(Top 12%)3140(Top 19%)3140(Top 56%)
10K6.21 mi3.10 mi3908+2173696+1933696+1933701(Top 13%)3493(Top 22%)3493(Top 62%)
15K9.32 mi3.11 mi3686+2223486+2103486+2103306(Top 12%)3140(Top 19%)3140(Top 56%)
20K12.43 mi3.11 mi3568+1183380+1063380+1063321(Top 12%)3146(Top 20%)3146(Top 56%)
Half13.11 mi0.68 mi3581-133391-113391-113859(Top 14%)3639(Top 23%)3639(Top 64%)
25K15.53 mi2.42 mi3527+543339+523339+523465(Top 12%)3270(Top 20%)3270(Top 58%)
30K18.64 mi3.11 mi3396+1313213+1263213+1263169(Top 11%)2973(Top 18%)2973(Top 53%)
20M20.00 mi1.36 mi3325+713145+683145+683057(Top 11%)2847(Top 18%)2847(Top 50%)
21M21.00 mi1.00 mi3269+563091+543091+542928(Top 10%)2714(Top 17%)2714(Top 48%)
35K21.75 mi0.75 mi3275-63092-13092-14098(Top 14%)3673(Top 23%)3673(Top 65%)
23M23.00 mi1.25 mi3264+113081+113081+114083(Top 14%)3642(Top 23%)3642(Top 65%)
24M24.00 mi1.00 mi3294-303101-203101-204718(Top 17%)4058(Top 25%)4058(Top 72%)
40K24.85 mi0.85 mi3315-213119-183119-184782(Top 17%)4060(Top 25%)4060(Top 72%)
25.2M25.20 mi0.35 mi3341-263136-173136-175274(Top 19%)4295(Top 27%)4295(Top 76%)
Finish26.22 mi1.02 mi3403-623186-503186-506143(Top 22%)4819(Top 30%)4819(Top 85%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 12%
×21stories
+97ft-345ft

Overall

3306

Males

3140

M18-39

3140

5K→10K

3.1 - 6.2 mi

Top 13%
×5stories
+79ft-138ft

Overall

3701

Males

3493

M18-39

3493

10K→15K

6.2 - 9.3 mi

Top 12%
×3stories
+67ft-78ft

Overall

3306

Males

3140

M18-39

3140

15K→20K

9.3 - 12.4 mi

Top 12%
×5stories
+106ft-86ft

Overall

3321

Males

3146

M18-39

3146

20K→Half

12.4 - 13.1 mi

Top 14%
×2stories
+19ft-37ft

Overall

3859

Males

3639

M18-39

3639

Half→25K

13.1 - 15.5 mi

Top 12%
×4stories
+66ft-88ft

Overall

3465

Males

3270

M18-39

3270

25K→30K

15.5 - 18.6 mi

Top 11%
×9stories
+181ft-148ft

Overall

3169

Males

2973

M18-39

2973

30K→20M

18.6 - 20.0 mi

Top 11%
×5stories
+64ft-50ft

Overall

3057

Males

2847

M18-39

2847

20M→21M

20.0 - 21.0 mi

Top 10%
×8stories
+106ft-24ft

Overall

2928

Males

2714

M18-39

2714

21M→35K

21.0 - 21.8 mi

Top 14%
×7stories
+17ft-86ft

Overall

4098

Males

3673

M18-39

3673

35K→23M

21.8 - 23.0 mi

Top 14%
×5stories
+23ft-63ft

Overall

4083

Males

3642

M18-39

3642

23M→24M

23.0 - 24.0 mi

Top 17%
×6stories
+12ft-82ft

Overall

4718

Males

4058

M18-39

4058

24M→40K

24.0 - 24.9 mi

Top 17%
×1story
+6ft-20ft

Overall

4782

Males

4060

M18-39

4060

40K→25.2M

24.9 - 25.2 mi

Top 19%
×1story
+13ft-16ft

Overall

5274

Males

4295

M18-39

4295

25.2M→Finish

25.2 - 26.2 mi

Top 22%
×2stories
+22ft-21ft

Overall

6143

Males

4819

M18-39

4819

Passing Analysis

Category:
Athletes Passed
1348
Passed By
626
Net Change
+722
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4125
5K → 10K27760+217#4125#3908
10K → 15K24119+222#3908#3686
15K → 20K15537+118#3686#3568
20K → Half1629-13#3568#3581
Half → 25K10147+54#3581#3527
25K → 30K17342+131#3527#3396
30K → 20M9625+71#3396#3325
20M → 21M7822+56#3325#3269
21M → 35K3238-6#3269#3275
35K → 23M7261+11#3275#3264
23M → 24M3363-30#3264#3294
24M → 40K3354-21#3294#3315
40K → 25.2M1541-26#3315#3341
25.2M → Finish2688-62#3341#3403
TOTALS1348626+722
📊

Passing Visuals

Category:
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🔥Passing Intensity

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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

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing