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BOSTON MARATHON 2025

Huang Haibo

Bib: 8600•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M40-44)
#0 / 2247
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:42
Rank: #10424
Start → 5K
22:42 | 7:18/mi
10K· 6.21 mi
46:42
Rank: #12271 (-1847)
5K → 10K
24:00 | 7:43/mi
15K· 9.32 mi
1:10:25
Rank: #12471 (-200)
10K → 15K
23:43 | 7:38/mi
20K· 12.43 mi
1:35:30
Rank: #13240 (-769)
15K → 20K
25:05 | 8:04/mi
Half· 13.11 mi
1:40:59
Rank: #13389 (-149)
20K → Half
5:29 | 8:02/mi
25K· 15.53 mi
2:01:55
Rank: #14295 (-906)
Half → 25K
20:56 | 8:38/mi
30K· 18.64 mi
2:31:11
Rank: #15597 (-1302)
25K → 30K
29:16 | 9:25/mi
20M
2:44:26
Rank: #16009 (-412)
30K → 20M
13:15 | 9:45/mi
21M
2:53:54
Rank: #15951 (+58)
20M → 21M
9:28 | 9:28/mi
35K· 21.75 mi
3:00:33
Rank: #15991 (-40)
21M → 35K
6:39 | 8:53/mi
23M
3:12:27
Rank: #16123 (-132)
35K → 23M
11:54 | 9:30/mi
24M
3:21:31
Rank: #16180 (-57)
23M → 24M
9:04 | 9:04/mi
40K· 24.85 mi
3:29:13
Rank: #16190 (-10)
24M → 40K
7:42 | 9:00/mi
25.2M
3:32:24
Rank: #16134 (+56)
40K → 25.2M
3:11 | 9:14/mi
Finish· 26.22 mi
3:41:03
Rank: #16128 (+6)
25.2M → Finish
8:39 | 8:29/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:40:59
Pace7:42 /mi
2nd Half
Distance13.11 mi
Time2:00:04
Pace9:10 /mi
📊Positive Split: 18.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:47:5622:427:1822:42
7:18
-
10K
6.21 mi11:11:5646:427:3124:00
7:43
+0:25
15K
9.32 mi11:35:391:10:257:3323:43
7:38
-0:05
20K
12.43 mi12:00:441:35:307:4125:05
8:04
+0:26
Half
13.11 mi12:06:131:40:597:425:29
8:02
-0:02
25K
15.53 mi12:27:092:01:557:5120:56
8:38
+0:36
30K
18.64 mi12:56:252:31:118:0729:16
9:25
+0:47
20M
20.00 mi13:09:402:44:268:1313:15
9:45
+0:20
21M
21.00 mi13:19:082:53:548:179:28
9:28
-0:17
35K
21.75 mi13:25:473:00:338:186:39
8:53
-0:35
23M
23.00 mi13:37:413:12:278:2211:54
9:30
+0:37
24M
24.00 mi13:46:453:21:318:249:04
9:04
-0:26
40K
24.85 mi13:54:273:29:138:257:42
9:00
-0:04
25.2M
25.20 mi13:57:383:32:248:263:11
9:14
+0:14
Finish
26.22 mi14:06:173:41:038:268:39
8:29
-0:45

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

7:18 /mi

Average Pace

8:26 /mi

Slowest Pace

9:45 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:49:38

50% of race

Time at Steady Pace

47:32

22% of race

Time at Slower Pace

1:03:53

29% of race

Average Pace: 8:26 /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 mi10:47:5622:427:1822:42
7:18
#10424
10K
6.21 mi11:11:5646:427:3124:00
7:43
#12271
15K
9.32 mi11:35:391:10:257:3323:43
7:38
#12471
20K
12.43 mi12:00:441:35:307:4125:05
8:04
#13240
Half
13.11 mi12:06:131:40:597:425:29
8:02
#13389
25K
15.53 mi12:27:092:01:557:5120:56
8:38
#14295
30K
18.64 mi12:56:252:31:118:0729:16
9:25
#15597
20M
20.00 mi13:09:402:44:268:1313:15
9:45
#16009
21M
21.00 mi13:19:082:53:548:179:28
9:28
#15951
35K
21.75 mi13:25:473:00:338:186:39
8:53
#15991
23M
23.00 mi13:37:413:12:278:2211:54
9:30
#16123
24M
24.00 mi13:46:453:21:318:249:04
9:04
#16180
40K
24.85 mi13:54:273:29:138:257:42
9:00
#16190
25.2M
25.20 mi13:57:383:32:248:263:11
9:14
#16134
Finish
26.22 mi14:06:173:41:038:268:39
8:29
#16128
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi104248402840212915(Top 45%)9481(Top 59%)9481(Top 422%)
10K6.21 mi3.10 mi12271-18479291-8899291-88914107(Top 50%)10050(Top 62%)10050(Top 447%)
15K9.32 mi3.11 mi12471-2009350-599350-5912915(Top 45%)9481(Top 59%)9481(Top 422%)
20K12.43 mi3.11 mi13240-7699626-2769626-27615445(Top 54%)10518(Top 65%)10518(Top 468%)
Half13.11 mi0.68 mi13389-1499688-629688-6216151(Top 57%)10824(Top 67%)10824(Top 482%)
25K15.53 mi2.42 mi14295-90610038-35010038-35017989(Top 63%)11513(Top 71%)11513(Top 512%)
30K18.64 mi3.11 mi15597-130210557-51910557-51919609(Top 69%)12104(Top 75%)12104(Top 539%)
20M20.00 mi1.36 mi16009-41210692-13510692-13520101(Top 71%)12194(Top 76%)12194(Top 543%)
21M21.00 mi1.00 mi15951+5810630+6210630+6215915(Top 56%)10210(Top 63%)10210(Top 454%)
35K21.75 mi0.75 mi15991-40106301063017666(Top 62%)10892(Top 68%)10892(Top 485%)
23M23.00 mi1.25 mi16123-13210653-2310653-2318708(Top 66%)11303(Top 70%)11303(Top 503%)
24M24.00 mi1.00 mi16180-5710650+310650+317671(Top 62%)10768(Top 67%)10768(Top 479%)
40K24.85 mi0.85 mi16190-1010639+1110639+1116307(Top 57%)10056(Top 62%)10056(Top 448%)
25.2M25.20 mi0.35 mi16134+5610605+3410605+3413073(Top 46%)8518(Top 53%)8518(Top 379%)
Finish26.22 mi1.02 mi16128+610580+2510580+2516126(Top 57%)9992(Top 62%)9992(Top 445%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 45%
×21stories
+97ft-345ft

Overall

12915

Males

9481

M40-44

9481

5K→10K

3.1 - 6.2 mi

Top 50%
×5stories
+79ft-138ft

Overall

14107

Males

10050

M40-44

10050

10K→15K

6.2 - 9.3 mi

Top 45%
×3stories
+67ft-78ft

Overall

12915

Males

9481

M40-44

9481

15K→20K

9.3 - 12.4 mi

Top 54%
×5stories
+106ft-86ft

Overall

15445

Males

10518

M40-44

10518

20K→Half

12.4 - 13.1 mi

Top 57%
×2stories
+19ft-37ft

Overall

16151

Males

10824

M40-44

10824

Half→25K

13.1 - 15.5 mi

Top 63%
×4stories
+66ft-88ft

Overall

17989

Males

11513

M40-44

11513

25K→30K

15.5 - 18.6 mi

Top 69%
×9stories
+181ft-148ft

Overall

19609

Males

12104

M40-44

12104

30K→20M

18.6 - 20.0 mi

Top 71%
×5stories
+64ft-50ft

Overall

20101

Males

12194

M40-44

12194

20M→21M

20.0 - 21.0 mi

Top 56%
×8stories
+106ft-24ft

Overall

15915

Males

10210

M40-44

10210

21M→35K

21.0 - 21.8 mi

Top 62%
×7stories
+17ft-86ft

Overall

17666

Males

10892

M40-44

10892

35K→23M

21.8 - 23.0 mi

Top 66%
×5stories
+23ft-63ft

Overall

18708

Males

11303

M40-44

11303

23M→24M

23.0 - 24.0 mi

Top 62%
×6stories
+12ft-82ft

Overall

17671

Males

10768

M40-44

10768

24M→40K

24.0 - 24.9 mi

Top 57%
×1story
+6ft-20ft

Overall

16307

Males

10056

M40-44

10056

40K→25.2M

24.9 - 25.2 mi

Top 46%
×1story
+13ft-16ft

Overall

13073

Males

8518

M40-44

8518

25.2M→Finish

25.2 - 26.2 mi

Top 57%
×2stories
+22ft-21ft

Overall

16126

Males

9992

M40-44

9992

Passing Analysis

Category:
Athletes Passed
844
Passed By
6548
Net Change
-5704
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10424
5K → 10K171864-1847#10424#12271
10K → 15K115315-200#12271#12471
15K → 20K57826-769#12471#13240
20K → Half7156-149#13240#13389
Half → 25K44950-906#13389#14295
25K → 30K461348-1302#14295#15597
30K → 20M37449-412#15597#16009
20M → 21M13779+58#16009#15951
21M → 35K5696-40#15951#15991
35K → 23M78210-132#15991#16123
23M → 24M53110-57#16123#16180
24M → 40K5767-10#16180#16190
40K → 25.2M648+56#16190#16134
25.2M → Finish7670+6#16134#16128
TOTALS8446548-5704
📊

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