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BOSTON MARATHON 2025

Chris Kuang

Bib: 32533•M

DC

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

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
31:26
Rank: #25868
Start → 5K
10:07/mi
31:26 split
10K· 6.21 mi
1:03:03
Rank: #25760 (+108)
5K → 10K
10:11/mi
31:37 split
15K· 9.32 mi
1:34:54
Rank: #25683 (+77)
10K → 15K
10:15/mi
31:51 split
20K· 12.43 mi
2:07:47
Rank: #25577 (+106)
15K → 20K
10:35/mi
32:53 split
Half· 13.11 mi
2:14:46
Rank: #25568 (+9)
20K → Half
10:14/mi
6:59 split
25K· 15.53 mi
2:40:33
Rank: #25395 (+173)
Half → 25K
10:38/mi
25:47 split
30K· 18.64 mi
3:16:21
Rank: #25301 (+94)
25K → 30K
11:31/mi
35:48 split
20M
3:32:08
Rank: #25253 (+48)
30K → 20M
11:37/mi
15:47 split
21M
3:44:28
Rank: #25207 (+46)
20M → 21M
12:20/mi
12:20 split
35K· 21.75 mi
3:53:18
Rank: #25223 (-16)
21M → 35K
11:48/mi
8:50 split
23M
4:07:52
Rank: #25182 (+41)
35K → 23M
11:38/mi
14:34 split
24M
4:19:27
Rank: #25186 (-4)
23M → 24M
11:35/mi
11:35 split
40K· 24.85 mi
4:29:24
Rank: #25163 (+23)
24M → 40K
11:38/mi
9:57 split
25.2M
4:33:38
Rank: #25151 (+12)
40K → 25.2M
12:17/mi
4:14 split
Finish· 26.22 mi
4:44:49
Rank: #25170 (-19)
25.2M → Finish
10:58/mi
11:11 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:14:46
Pace10:17 /mi
2nd Half
Distance13.11 mi
Time2:30:03
Pace11:27 /mi
📊Positive Split: 11.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:41:1331:2610:0731:26
10:07
-
10K
6.21 mi11:12:501:03:0310:0931:37
10:11
+0:04
15K
9.32 mi11:44:411:34:5410:1131:51
10:15
+0:04
20K
12.43 mi12:17:342:07:4710:1732:53
10:35
+0:20
Half
13.11 mi12:24:332:14:4610:176:59
10:14
-0:21
25K
15.53 mi12:50:202:40:3310:2025:47
10:38
+0:24
30K
18.64 mi13:26:083:16:2110:3235:48
11:31
+0:53
20M
20.00 mi13:41:553:32:0810:3615:47
11:37
+0:06
21M
21.00 mi13:54:153:44:2810:4112:20
12:20
+0:43
35K
21.75 mi14:03:053:53:1810:448:50
11:48
-0:32
23M
23.00 mi14:17:394:07:5210:4714:34
11:38
-0:10
24M
24.00 mi14:29:144:19:2710:4911:35
11:35
-0:03
40K
24.85 mi14:39:114:29:2410:509:57
11:38
+0:03
25.2M
25.20 mi14:43:254:33:3810:524:14
12:17
+0:39
Finish
26.22 mi14:54:364:44:4910:5211:11
10:58
-1:19

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

10:07 /mi

Average Pace

10:52 /mi

Slowest Pace

12:20 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:51:44

60% of race

Time at Steady Pace

1:36:31

34% of race

Time at Slower Pace

16:34

6% of race

Average Pace: 10:52 /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 mi10:41:1331:2610:0731:26
10:07
#25868
10K
6.21 mi11:12:501:03:0310:0931:37
10:11
#25760
15K
9.32 mi11:44:411:34:5410:1131:51
10:15
#25683
20K
12.43 mi12:17:342:07:4710:1732:53
10:35
#25577
Half
13.11 mi12:24:332:14:4610:176:59
10:14
#25568
25K
15.53 mi12:50:202:40:3310:2025:47
10:38
#25395
30K
18.64 mi13:26:083:16:2110:3235:48
11:31
#25301
20M
20.00 mi13:41:553:32:0810:3615:47
11:37
#25253
21M
21.00 mi13:54:153:44:2810:4112:20
12:20
#25207
35K
21.75 mi14:03:053:53:1810:448:50
11:48
#25223
23M
23.00 mi14:17:394:07:5210:4714:34
11:38
#25182
24M
24.00 mi14:29:144:19:2710:4911:35
11:35
#25186
40K
24.85 mi14:39:114:29:2410:509:57
11:38
#25163
25.2M
25.20 mi14:43:254:33:3810:524:14
12:17
#25151
Finish
26.22 mi14:54:364:44:4910:5211:11
10:58
#25170
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi25868151161511625509(Top 90%)14936(Top 93%)14936(Top 265%)
10K6.21 mi3.10 mi25760+10815058+5815058+5825696(Top 90%)15000(Top 93%)15000(Top 266%)
15K9.32 mi3.11 mi25683+7715008+5015008+5025509(Top 90%)14936(Top 93%)14936(Top 265%)
20K12.43 mi3.11 mi25577+10614965+4314965+4325333(Top 89%)14825(Top 92%)14825(Top 263%)
Half13.11 mi0.68 mi25568+914959+614959+625312(Top 89%)14805(Top 92%)14805(Top 262%)
25K15.53 mi2.42 mi25395+17314859+10014859+10024608(Top 87%)14467(Top 90%)14467(Top 256%)
30K18.64 mi3.11 mi25301+9414787+7214787+7224878(Top 88%)14475(Top 90%)14475(Top 257%)
20M20.00 mi1.36 mi25253+4814749+3814749+3824736(Top 87%)14341(Top 89%)14341(Top 254%)
21M21.00 mi1.00 mi25207+4614716+3314716+3324158(Top 85%)13987(Top 87%)13987(Top 248%)
35K21.75 mi0.75 mi25223-1614719-314719-325577(Top 90%)14621(Top 91%)14621(Top 259%)
23M23.00 mi1.25 mi25182+4114683+3614683+3624482(Top 86%)14086(Top 87%)14086(Top 250%)
24M24.00 mi1.00 mi25186-4146831468325038(Top 88%)14328(Top 89%)14328(Top 254%)
40K24.85 mi0.85 mi25163+2314664+1914664+1924374(Top 86%)13952(Top 87%)13952(Top 247%)
25.2M25.20 mi0.35 mi25151+1214658+614658+623760(Top 84%)13653(Top 85%)13653(Top 242%)
Finish26.22 mi1.02 mi25170-1914655+314655+325320(Top 89%)14446(Top 90%)14446(Top 256%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 90%
×21stories
+97ft-345ft

Overall

25509

Males

14936

M18-39

14936

5K→10K

3.1 - 6.2 mi

Top 90%
×5stories
+79ft-138ft

Overall

25696

Males

15000

M18-39

15000

10K→15K

6.2 - 9.3 mi

Top 90%
×3stories
+67ft-78ft

Overall

25509

Males

14936

M18-39

14936

15K→20K

9.3 - 12.4 mi

Top 89%
×5stories
+106ft-86ft

Overall

25333

Males

14825

M18-39

14825

20K→Half

12.4 - 13.1 mi

Top 89%
×2stories
+19ft-37ft

Overall

25312

Males

14805

M18-39

14805

Half→25K

13.1 - 15.5 mi

Top 87%
×4stories
+66ft-88ft

Overall

24608

Males

14467

M18-39

14467

25K→30K

15.5 - 18.6 mi

Top 88%
×9stories
+181ft-148ft

Overall

24878

Males

14475

M18-39

14475

30K→20M

18.6 - 20.0 mi

Top 87%
×5stories
+64ft-50ft

Overall

24736

Males

14341

M18-39

14341

20M→21M

20.0 - 21.0 mi

Top 85%
×8stories
+106ft-24ft

Overall

24158

Males

13987

M18-39

13987

21M→35K

21.0 - 21.8 mi

Top 90%
×7stories
+17ft-86ft

Overall

25577

Males

14621

M18-39

14621

35K→23M

21.8 - 23.0 mi

Top 86%
×5stories
+23ft-63ft

Overall

24482

Males

14086

M18-39

14086

23M→24M

23.0 - 24.0 mi

Top 88%
×6stories
+12ft-82ft

Overall

25038

Males

14328

M18-39

14328

24M→40K

24.0 - 24.9 mi

Top 86%
×1story
+6ft-20ft

Overall

24374

Males

13952

M18-39

13952

40K→25.2M

24.9 - 25.2 mi

Top 84%
×1story
+13ft-16ft

Overall

23760

Males

13653

M18-39

13653

25.2M→Finish

25.2 - 26.2 mi

Top 89%
×2stories
+22ft-21ft

Overall

25320

Males

14446

M18-39

14446

Passing Analysis

Category:
Athletes Passed
1325
Passed By
627
Net Change
+698
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#25868
5K → 10K251143+108#25868#25760
10K → 15K17295+77#25760#25683
15K → 20K16761+106#25683#25577
20K → Half2617+9#25577#25568
Half → 25K20128+173#25568#25395
25K → 30K17177+94#25395#25301
30K → 20M7830+48#25301#25253
20M → 21M6620+46#25253#25207
21M → 35K1834-16#25207#25223
35K → 23M6625+41#25223#25182
23M → 24M2832-4#25182#25186
24M → 40K4118+23#25186#25163
40K → 25.2M186+12#25163#25151
25.2M → Finish2241-19#25151#25170
TOTALS1325627+698
📊

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