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BOSTON MARATHON 2025

Justin Wu

Bib: 665•M

CA

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 4%
Gender (Male)
#0 / 16105
Top 7%
Division (M18-39)
#0 / 5642
Top 17%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
18:27
Rank: #898
Start → 5K
18:27 | 5:56/mi
10K· 6.21 mi
36:51
Rank: #892 (+6)
5K → 10K
18:24 | 5:55/mi
15K· 9.32 mi
55:27
Rank: #922 (-30)
10K → 15K
18:36 | 5:59/mi
20K· 12.43 mi
1:15:17
Rank: #1162 (-240)
15K → 20K
19:50 | 6:23/mi
Half· 13.11 mi
1:19:26
Rank: #1175 (-13)
20K → Half
4:09 | 6:05/mi
25K· 15.53 mi
1:34:18
Rank: #1166 (+9)
Half → 25K
14:52 | 6:08/mi
30K· 18.64 mi
1:54:06
Rank: #1196 (-30)
25K → 30K
19:48 | 6:22/mi
20M
2:02:55
Rank: #1213 (-17)
30K → 20M
8:49 | 6:29/mi
21M
2:09:38
Rank: #1192 (+21)
20M → 21M
6:43 | 6:43/mi
35K· 21.75 mi
2:14:17
Rank: #1176 (+16)
21M → 35K
4:39 | 6:13/mi
23M
2:22:20
Rank: #1139 (+37)
35K → 23M
8:03 | 6:26/mi
24M
2:28:40
Rank: #1131 (+8)
23M → 24M
6:20 | 6:20/mi
40K· 24.85 mi
2:34:31
Rank: #1157 (-26)
24M → 40K
5:51 | 6:51/mi
25.2M
2:37:00
Rank: #1166 (-9)
40K → 25.2M
2:29 | 7:12/mi
Finish· 26.22 mi
2:43:29
Rank: #1177 (-11)
25.2M → Finish
6:29 | 6:22/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:19:26
Pace6:04 /mi
2nd Half
Distance13.11 mi
Time1:24:03
Pace6:25 /mi
📊Positive Split: 5.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:18:3718:275:5618:27
5:56
-
10K
6.21 mi10:37:0136:515:5618:24
5:55
-0:01
15K
9.32 mi10:55:3755:275:5718:36
5:59
+0:04
20K
12.43 mi11:15:271:15:176:0319:50
6:23
+0:24
Half
13.11 mi11:19:361:19:266:044:09
6:05
-0:18
25K
15.53 mi11:34:281:34:186:0414:52
6:08
+0:03
30K
18.64 mi11:54:161:54:066:0719:48
6:22
+0:14
20M
20.00 mi12:03:052:02:556:098:49
6:29
+0:07
21M
21.00 mi12:09:482:09:386:106:43
6:43
+0:14
35K
21.75 mi12:14:272:14:176:104:39
6:13
-0:30
23M
23.00 mi12:22:302:22:206:118:03
6:26
+0:13
24M
24.00 mi12:28:502:28:406:126:20
6:20
-0:06
40K
24.85 mi12:34:412:34:316:135:51
6:51
+0:31
25.2M
25.20 mi12:37:102:37:006:142:29
7:12
+0:21
Finish
26.22 mi12:43:392:43:296:146:29
6:22
-0:50

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

5:55 /mi

Average Pace

6:14 /mi

Slowest Pace

7:12 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:14:28

46% of race

Time at Steady Pace

1:13:58

45% of race

Time at Slower Pace

15:03

9% of race

Average Pace: 6:14 /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 mi10:18:3718:275:5618:27
5:56
#898
10K
6.21 mi10:37:0136:515:5618:24
5:55
#892
15K
9.32 mi10:55:3755:275:5718:36
5:59
#922
20K
12.43 mi11:15:271:15:176:0319:50
6:23
#1162
Half
13.11 mi11:19:361:19:266:044:09
6:05
#1175
25K
15.53 mi11:34:281:34:186:0414:52
6:08
#1166
30K
18.64 mi11:54:161:54:066:0719:48
6:22
#1196
20M
20.00 mi12:03:052:02:556:098:49
6:29
#1213
21M
21.00 mi12:09:482:09:386:106:43
6:43
#1192
35K
21.75 mi12:14:272:14:176:104:39
6:13
#1176
23M
23.00 mi12:22:302:22:206:118:03
6:26
#1139
24M
24.00 mi12:28:502:28:406:126:20
6:20
#1131
40K
24.85 mi12:34:412:34:316:135:51
6:51
#1157
25.2M
25.20 mi12:37:102:37:006:142:29
7:12
#1166
Finish
26.22 mi12:43:392:43:296:146:29
6:22
#1177
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi898840840993(Top 3%)940(Top 6%)940(Top 17%)
10K6.21 mi3.10 mi892+6838+2838+2888(Top 3%)835(Top 5%)835(Top 15%)
15K9.32 mi3.11 mi922-30867-29867-29993(Top 3%)940(Top 6%)940(Top 17%)
20K12.43 mi3.11 mi1162-2401102-2351102-2352425(Top 9%)2313(Top 14%)2313(Top 41%)
Half13.11 mi0.68 mi1175-131114-121114-121455(Top 5%)1383(Top 9%)1383(Top 25%)
25K15.53 mi2.42 mi1166+91102+121102+121205(Top 4%)1138(Top 7%)1138(Top 20%)
30K18.64 mi3.11 mi1196-301128-261128-261442(Top 5%)1363(Top 8%)1363(Top 24%)
20M20.00 mi1.36 mi1213-171145-171145-171566(Top 6%)1480(Top 9%)1480(Top 26%)
21M21.00 mi1.00 mi1192+211123+221123+221244(Top 4%)1174(Top 7%)1174(Top 21%)
35K21.75 mi0.75 mi1176+161107+161107+161262(Top 4%)1192(Top 7%)1192(Top 21%)
23M23.00 mi1.25 mi1139+371073+341073+341228(Top 4%)1157(Top 7%)1157(Top 21%)
24M24.00 mi1.00 mi1131+81065+81065+81397(Top 5%)1308(Top 8%)1308(Top 23%)
40K24.85 mi0.85 mi1157-261089-241089-243004(Top 11%)2700(Top 17%)2700(Top 48%)
25.2M25.20 mi0.35 mi1166-91098-91098-92076(Top 7%)1865(Top 12%)1865(Top 33%)
Finish26.22 mi1.02 mi1177-111107-91107-92122(Top 7%)1940(Top 12%)1940(Top 34%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 3%
×21stories
+97ft-345ft

Overall

993

Males

940

M18-39

940

5K→10K

3.1 - 6.2 mi

Top 3%
×5stories
+79ft-138ft

Overall

888

Males

835

M18-39

835

10K→15K

6.2 - 9.3 mi

Top 3%
×3stories
+67ft-78ft

Overall

993

Males

940

M18-39

940

15K→20K

9.3 - 12.4 mi

Top 9%
×5stories
+106ft-86ft

Overall

2425

Males

2313

M18-39

2313

20K→Half

12.4 - 13.1 mi

Top 5%
×2stories
+19ft-37ft

Overall

1455

Males

1383

M18-39

1383

Half→25K

13.1 - 15.5 mi

Top 4%
×4stories
+66ft-88ft

Overall

1205

Males

1138

M18-39

1138

25K→30K

15.5 - 18.6 mi

Top 5%
×9stories
+181ft-148ft

Overall

1442

Males

1363

M18-39

1363

30K→20M

18.6 - 20.0 mi

Top 6%
×5stories
+64ft-50ft

Overall

1566

Males

1480

M18-39

1480

20M→21M

20.0 - 21.0 mi

Top 4%
×8stories
+106ft-24ft

Overall

1244

Males

1174

M18-39

1174

21M→35K

21.0 - 21.8 mi

Top 4%
×7stories
+17ft-86ft

Overall

1262

Males

1192

M18-39

1192

35K→23M

21.8 - 23.0 mi

Top 4%
×5stories
+23ft-63ft

Overall

1228

Males

1157

M18-39

1157

23M→24M

23.0 - 24.0 mi

Top 5%
×6stories
+12ft-82ft

Overall

1397

Males

1308

M18-39

1308

24M→40K

24.0 - 24.9 mi

Top 11%
×1story
+6ft-20ft

Overall

3004

Males

2700

M18-39

2700

40K→25.2M

24.9 - 25.2 mi

Top 7%
×1story
+13ft-16ft

Overall

2076

Males

1865

M18-39

1865

25.2M→Finish

25.2 - 26.2 mi

Top 7%
×2stories
+22ft-21ft

Overall

2122

Males

1940

M18-39

1940

Passing Analysis

Category:
Athletes Passed
351
Passed By
630
Net Change
-279
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#898
5K → 10K5549+6#898#892
10K → 15K1545-30#892#922
15K → 20K5245-240#922#1162
20K → Half518-13#1162#1175
Half → 25K3829+9#1175#1166
25K → 30K4070-30#1166#1196
30K → 20M2845-17#1196#1213
20M → 21M3918+21#1213#1192
21M → 35K226+16#1192#1176
35K → 23M5013+37#1176#1139
23M → 24M2113+8#1139#1131
24M → 40K1036-26#1131#1157
40K → 25.2M514-9#1157#1166
25.2M → Finish1829-11#1166#1177
TOTALS351630-279
📊

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