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BOSTON MARATHON 2025

Xiaowen Chen

Bib: 13161•M

BC

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 36%
Gender (Male)
#0 / 16105
Top 49%
Masters (Masters Men)
#0 / 10463
Top 38%
Division (M50-54)
#0 / 1996
Top 40%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:44
Rank: #10521
Start → 5K
22:44 | 7:19/mi
10K· 6.21 mi
45:19
Rank: #10277 (+244)
5K → 10K
22:35 | 7:16/mi
15K· 9.32 mi
1:07:40
Rank: #9846 (+431)
10K → 15K
22:21 | 7:12/mi
20K· 12.43 mi
1:30:10
Rank: #9458 (+388)
15K → 20K
22:30 | 7:15/mi
Half· 13.11 mi
1:35:02
Rank: #9398 (+60)
20K → Half
4:52 | 7:08/mi
25K· 15.53 mi
1:52:44
Rank: #9199 (+199)
Half → 25K
17:42 | 7:18/mi
30K· 18.64 mi
2:17:06
Rank: #9313 (-114)
25K → 30K
24:22 | 7:51/mi
20M
2:27:53
Rank: #9333 (-20)
30K → 20M
10:47 | 7:56/mi
21M
2:36:44
Rank: #9505 (-172)
20M → 21M
8:51 | 8:51/mi
35K· 21.75 mi
2:42:39
Rank: #9562 (-57)
21M → 35K
5:55 | 7:55/mi
23M
2:52:54
Rank: #9649 (-87)
35K → 23M
10:15 | 8:11/mi
24M
3:01:03
Rank: #9760 (-111)
23M → 24M
8:09 | 8:09/mi
40K· 24.85 mi
3:08:25
Rank: #9910 (-150)
24M → 40K
7:22 | 8:37/mi
25.2M
3:11:55
Rank: #10068 (-158)
40K → 25.2M
3:30 | 10:09/mi
Finish· 26.22 mi
3:20:28
Rank: #10281 (-213)
25.2M → Finish
8:33 | 8:23/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:35:02
Pace7:15 /mi
2nd Half
Distance13.11 mi
Time1:45:26
Pace8:03 /mi
📊Positive Split: 10.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:54:2022:447:1922:44
7:19
-
10K
6.21 mi11:16:5545:197:1822:35
7:16
-0:03
15K
9.32 mi11:39:161:07:407:1622:21
7:12
-0:04
20K
12.43 mi12:01:461:30:107:1522:30
7:15
+0:03
Half
13.11 mi12:06:381:35:027:154:52
7:08
-0:07
25K
15.53 mi12:24:201:52:447:1517:42
7:18
+0:10
30K
18.64 mi12:48:422:17:067:2124:22
7:51
+0:33
20M
20.00 mi12:59:292:27:537:2410:47
7:56
+0:05
21M
21.00 mi13:08:202:36:447:288:51
8:51
+0:55
35K
21.75 mi13:14:152:42:397:295:55
7:55
-0:56
23M
23.00 mi13:24:302:52:547:3110:15
8:11
+0:16
24M
24.00 mi13:32:393:01:037:338:09
8:09
-0:02
40K
24.85 mi13:40:013:08:257:357:22
8:37
+0:28
25.2M
25.20 mi13:43:313:11:557:373:30
10:09
+1:32
Finish
26.22 mi13:52:043:20:287:398:33
8:23
-1:46

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

7:08 /mi

Average Pace

7:39 /mi

Slowest Pace

10:09 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:52:44

56% of race

Time at Steady Pace

59:28

30% of race

Time at Slower Pace

28:16

14% of race

Average Pace: 7:39 /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 mi10:54:2022:447:1922:44
7:19
#10521
10K
6.21 mi11:16:5545:197:1822:35
7:16
#10277
15K
9.32 mi11:39:161:07:407:1622:21
7:12
#9846
20K
12.43 mi12:01:461:30:107:1522:30
7:15
#9458
Half
13.11 mi12:06:381:35:027:154:52
7:08
#9398
25K
15.53 mi12:24:201:52:447:1517:42
7:18
#9199
30K
18.64 mi12:48:422:17:067:2124:22
7:51
#9313
20M
20.00 mi12:59:292:27:537:2410:47
7:56
#9333
21M
21.00 mi13:08:202:36:447:288:51
8:51
#9505
35K
21.75 mi13:14:152:42:397:295:55
7:55
#9562
23M
23.00 mi13:24:302:52:547:3110:15
8:11
#9649
24M
24.00 mi13:32:393:01:037:338:09
8:09
#9760
40K
24.85 mi13:40:013:08:257:357:22
8:37
#9910
25.2M
25.20 mi13:43:313:11:557:373:30
10:09
#10068
Finish
26.22 mi13:52:043:20:287:398:33
8:23
#10281
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi10521845084509058(Top 32%)7586(Top 47%)7586(Top 380%)
10K6.21 mi3.10 mi10277+2448308+1428308+14210080(Top 35%)8190(Top 51%)8190(Top 410%)
15K9.32 mi3.11 mi9846+4318049+2598049+2599058(Top 32%)7586(Top 47%)7586(Top 380%)
20K12.43 mi3.11 mi9458+3887810+2397810+2398550(Top 30%)7197(Top 45%)7197(Top 361%)
Half13.11 mi0.68 mi9398+607772+387772+388547(Top 30%)7230(Top 45%)7230(Top 362%)
25K15.53 mi2.42 mi9199+1997634+1387634+1388367(Top 29%)6982(Top 43%)6982(Top 350%)
30K18.64 mi3.11 mi9313-1147643-97643-910228(Top 36%)7806(Top 48%)7806(Top 391%)
20M20.00 mi1.36 mi9333-207621+227621+229994(Top 35%)7540(Top 47%)7540(Top 378%)
21M21.00 mi1.00 mi9505-1727676-557676-5512583(Top 44%)8631(Top 54%)8631(Top 432%)
35K21.75 mi0.75 mi9562-577697-217697-2111585(Top 41%)8120(Top 50%)8120(Top 407%)
23M23.00 mi1.25 mi9649-877701-47701-411265(Top 40%)7877(Top 49%)7877(Top 395%)
24M24.00 mi1.00 mi9760-1117711-107711-1012217(Top 43%)8273(Top 51%)8273(Top 414%)
40K24.85 mi0.85 mi9910-1507751-407751-4014114(Top 50%)9041(Top 56%)9041(Top 453%)
25.2M25.20 mi0.35 mi10068-1587815-647815-6417598(Top 62%)10621(Top 66%)10621(Top 532%)
Finish26.22 mi1.02 mi10281-2137890-757890-7515466(Top 54%)9681(Top 60%)9681(Top 485%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 32%
×21stories
+97ft-345ft

Overall

9058

Males

7586

M50-54

7586

5K→10K

3.1 - 6.2 mi

Top 35%
×5stories
+79ft-138ft

Overall

10080

Males

8190

M50-54

8190

10K→15K

6.2 - 9.3 mi

Top 32%
×3stories
+67ft-78ft

Overall

9058

Males

7586

M50-54

7586

15K→20K

9.3 - 12.4 mi

Top 30%
×5stories
+106ft-86ft

Overall

8550

Males

7197

M50-54

7197

20K→Half

12.4 - 13.1 mi

Top 30%
×2stories
+19ft-37ft

Overall

8547

Males

7230

M50-54

7230

Half→25K

13.1 - 15.5 mi

Top 29%
×4stories
+66ft-88ft

Overall

8367

Males

6982

M50-54

6982

25K→30K

15.5 - 18.6 mi

Top 36%
×9stories
+181ft-148ft

Overall

10228

Males

7806

M50-54

7806

30K→20M

18.6 - 20.0 mi

Top 35%
×5stories
+64ft-50ft

Overall

9994

Males

7540

M50-54

7540

20M→21M

20.0 - 21.0 mi

Top 44%
×8stories
+106ft-24ft

Overall

12583

Males

8631

M50-54

8631

21M→35K

21.0 - 21.8 mi

Top 41%
×7stories
+17ft-86ft

Overall

11585

Males

8120

M50-54

8120

35K→23M

21.8 - 23.0 mi

Top 40%
×5stories
+23ft-63ft

Overall

11265

Males

7877

M50-54

7877

23M→24M

23.0 - 24.0 mi

Top 43%
×6stories
+12ft-82ft

Overall

12217

Males

8273

M50-54

8273

24M→40K

24.0 - 24.9 mi

Top 50%
×1story
+6ft-20ft

Overall

14114

Males

9041

M50-54

9041

40K→25.2M

24.9 - 25.2 mi

Top 62%
×1story
+13ft-16ft

Overall

17598

Males

10621

M50-54

10621

25.2M→Finish

25.2 - 26.2 mi

Top 54%
×2stories
+22ft-21ft

Overall

15466

Males

9681

M50-54

9681

Passing Analysis

Category:
Athletes Passed
2158*
Passed By
1914
Net Change
+240
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10521
5K → 10K388144+244#10521#10277
10K → 15K462*31+431#10277#9846
15K → 20K41224+388#9846#9458
20K → Half666+60#9458#9398
Half → 25K24647+199#9398#9199
25K → 30K188302-114#9199#9313
30K → 20M98118-20#9313#9333
20M → 21M48220-172#9333#9505
21M → 35K4198-57#9505#9562
35K → 23M79166-87#9562#9649
23M → 24M60171-111#9649#9760
24M → 40K36185-150#9760#9910
40K → 25.2M8164-158#9910#10068
25.2M → Finish26238-213#10068#10281
TOTALS2158*1914+240

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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