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BOSTON MARATHON 2025

Sheng Gao

Bib: 4233•M

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 9%
Gender (Male)
#0 / 16105
Top 15%
Division (M18-39)
#0 / 5642
Top 35%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:02
Rank: #3456
Start → 5K
20:02 | 6:27/mi
10K· 6.21 mi
40:04
Rank: #3392 (+64)
5K → 10K
20:02 | 6:27/mi
15K· 9.32 mi
1:00:07
Rank: #3323 (+69)
10K → 15K
20:03 | 6:27/mi
20K· 12.43 mi
1:20:27
Rank: #3316 (+7)
15K → 20K
20:20 | 6:33/mi
Half· 13.11 mi
1:24:44
Rank: #3256 (+60)
20K → Half
4:17 | 6:17/mi
25K· 15.53 mi
1:40:17
Rank: #3085 (+171)
Half → 25K
15:33 | 6:25/mi
30K· 18.64 mi
2:01:14
Rank: #3070 (+15)
25K → 30K
20:57 | 6:45/mi
20M
2:10:22
Rank: #2983 (+87)
30K → 20M
9:08 | 6:43/mi
21M
2:17:33
Rank: #2956 (+27)
20M → 21M
7:11 | 7:11/mi
35K· 21.75 mi
2:22:23
Rank: #2884 (+72)
21M → 35K
4:50 | 6:28/mi
23M
2:30:45
Rank: #2805 (+79)
35K → 23M
8:22 | 6:41/mi
24M
2:37:16
Rank: #2742 (+63)
23M → 24M
6:31 | 6:31/mi
40K· 24.85 mi
2:42:49
Rank: #2659 (+83)
24M → 40K
5:33 | 6:29/mi
25.2M
2:45:19
Rank: #2646 (+13)
40K → 25.2M
2:30 | 7:15/mi
Finish· 26.22 mi
2:51:49
Rank: #2593 (+53)
25.2M → Finish
6:30 | 6:23/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:24:44
Pace6:28 /mi
2nd Half
Distance13.11 mi
Time1:27:05
Pace6:39 /mi
📊Positive Split: 2.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:22:5220:026:2720:02
6:27
-
10K
6.21 mi10:42:5440:046:2720:02
6:27
0:00
15K
9.32 mi11:02:571:00:076:2720:03
6:27
0:00
20K
12.43 mi11:23:171:20:276:2820:20
6:33
+0:06
Half
13.11 mi11:27:341:24:446:284:17
6:17
-0:16
25K
15.53 mi11:43:071:40:176:2715:33
6:25
+0:08
30K
18.64 mi12:04:042:01:146:3020:57
6:45
+0:20
20M
20.00 mi12:13:122:10:226:319:08
6:43
-0:02
21M
21.00 mi12:20:232:17:336:337:11
7:11
+0:28
35K
21.75 mi12:25:132:22:236:334:50
6:28
-0:43
23M
23.00 mi12:33:352:30:456:338:22
6:41
+0:13
24M
24.00 mi12:40:062:37:166:336:31
6:31
-0:10
40K
24.85 mi12:45:392:42:496:335:33
6:29
-0:02
25.2M
25.20 mi12:48:092:45:196:342:30
7:15
+0:46
Finish
26.22 mi12:54:392:51:496:336:30
6:23
-0:52

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

6:17 /mi

Average Pace

6:33 /mi

Slowest Pace

7:15 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:42:08

94% of race

Time at Steady Pace

9:41

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:33 /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 mi10:22:5220:026:2720:02
6:27
#3456
10K
6.21 mi10:42:5440:046:2720:02
6:27
#3392
15K
9.32 mi11:02:571:00:076:2720:03
6:27
#3323
20K
12.43 mi11:23:171:20:276:2820:20
6:33
#3316
Half
13.11 mi11:27:341:24:446:284:17
6:17
#3256
25K
15.53 mi11:43:071:40:176:2715:33
6:25
#3085
30K
18.64 mi12:04:042:01:146:3020:57
6:45
#3070
20M
20.00 mi12:13:122:10:226:319:08
6:43
#2983
21M
21.00 mi12:20:232:17:336:337:11
7:11
#2956
35K
21.75 mi12:25:132:22:236:334:50
6:28
#2884
23M
23.00 mi12:33:352:30:456:338:22
6:41
#2805
24M
24.00 mi12:40:062:37:166:336:31
6:31
#2742
40K
24.85 mi12:45:392:42:496:335:33
6:29
#2659
25.2M
25.20 mi12:48:092:45:196:342:30
7:15
#2646
Finish
26.22 mi12:54:392:51:496:336:30
6:23
#2593
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi3456328332833276(Top 12%)3112(Top 19%)3112(Top 55%)
10K6.21 mi3.10 mi3392+643221+623221+623364(Top 12%)3195(Top 20%)3195(Top 57%)
15K9.32 mi3.11 mi3323+693156+653156+653276(Top 12%)3112(Top 19%)3112(Top 55%)
20K12.43 mi3.11 mi3316+7315631563388(Top 12%)3210(Top 20%)3210(Top 57%)
Half13.11 mi0.68 mi3256+603100+563100+562437(Top 9%)2334(Top 14%)2334(Top 41%)
25K15.53 mi2.42 mi3085+1712940+1602940+1602454(Top 9%)2334(Top 14%)2334(Top 41%)
30K18.64 mi3.11 mi3070+152922+182922+183110(Top 11%)2919(Top 18%)2919(Top 52%)
20M20.00 mi1.36 mi2983+872837+852837+852565(Top 9%)2413(Top 15%)2413(Top 43%)
21M21.00 mi1.00 mi2956+272806+312806+313073(Top 11%)2838(Top 18%)2838(Top 50%)
35K21.75 mi0.75 mi2884+722739+672739+672306(Top 8%)2158(Top 13%)2158(Top 38%)
23M23.00 mi1.25 mi2805+792661+782661+782187(Top 8%)2044(Top 13%)2044(Top 36%)
24M24.00 mi1.00 mi2742+632600+612600+612134(Top 8%)1981(Top 12%)1981(Top 35%)
40K24.85 mi0.85 mi2659+832520+802520+801591(Top 6%)1475(Top 9%)1475(Top 26%)
25.2M25.20 mi0.35 mi2646+132507+132507+132364(Top 8%)2117(Top 13%)2117(Top 38%)
Finish26.22 mi1.02 mi2593+532454+532454+532240(Top 8%)2053(Top 13%)2053(Top 36%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 12%
×21stories
+97ft-345ft

Overall

3276

Males

3112

M18-39

3112

5K→10K

3.1 - 6.2 mi

Top 12%
×5stories
+79ft-138ft

Overall

3364

Males

3195

M18-39

3195

10K→15K

6.2 - 9.3 mi

Top 12%
×3stories
+67ft-78ft

Overall

3276

Males

3112

M18-39

3112

15K→20K

9.3 - 12.4 mi

Top 12%
×5stories
+106ft-86ft

Overall

3388

Males

3210

M18-39

3210

20K→Half

12.4 - 13.1 mi

Top 9%
×2stories
+19ft-37ft

Overall

2437

Males

2334

M18-39

2334

Half→25K

13.1 - 15.5 mi

Top 9%
×4stories
+66ft-88ft

Overall

2454

Males

2334

M18-39

2334

25K→30K

15.5 - 18.6 mi

Top 11%
×9stories
+181ft-148ft

Overall

3110

Males

2919

M18-39

2919

30K→20M

18.6 - 20.0 mi

Top 9%
×5stories
+64ft-50ft

Overall

2565

Males

2413

M18-39

2413

20M→21M

20.0 - 21.0 mi

Top 11%
×8stories
+106ft-24ft

Overall

3073

Males

2838

M18-39

2838

21M→35K

21.0 - 21.8 mi

Top 8%
×7stories
+17ft-86ft

Overall

2306

Males

2158

M18-39

2158

35K→23M

21.8 - 23.0 mi

Top 8%
×5stories
+23ft-63ft

Overall

2187

Males

2044

M18-39

2044

23M→24M

23.0 - 24.0 mi

Top 8%
×6stories
+12ft-82ft

Overall

2134

Males

1981

M18-39

1981

24M→40K

24.0 - 24.9 mi

Top 6%
×1story
+6ft-20ft

Overall

1591

Males

1475

M18-39

1475

40K→25.2M

24.9 - 25.2 mi

Top 8%
×1story
+13ft-16ft

Overall

2364

Males

2117

M18-39

2117

25.2M→Finish

25.2 - 26.2 mi

Top 8%
×2stories
+22ft-21ft

Overall

2240

Males

2053

M18-39

2053

Passing Analysis

Category:
Athletes Passed
1321
Passed By
458
Net Change
+863
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3456
5K → 10K16197+64#3456#3392
10K → 15K13263+69#3392#3323
15K → 20K9992+7#3323#3316
20K → Half600+60#3316#3256
Half → 25K1776+171#3256#3085
25K → 30K123108+15#3085#3070
30K → 20M10013+87#3070#2983
20M → 21M5629+27#2983#2956
21M → 35K731+72#2956#2884
35K → 23M8910+79#2884#2805
23M → 24M7613+63#2805#2742
24M → 40K885+83#2742#2659
40K → 25.2M196+13#2659#2646
25.2M → Finish6815+53#2646#2593
TOTALS1321458+863
📊

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