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BOSTON MARATHON 2025

Chih Jen Chan

Bib: 13017•M

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

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:55
Rank: #11104
Start → 5K
22:55 | 7:23/mi
10K· 6.21 mi
46:30
Rank: #11981 (-877)
5K → 10K
23:35 | 7:35/mi
15K· 9.32 mi
1:10:37
Rank: #12649 (-668)
10K → 15K
24:07 | 7:46/mi
20K· 12.43 mi
1:35:38
Rank: #13319 (-670)
15K → 20K
25:01 | 8:03/mi
Half· 13.11 mi
1:41:07
Rank: #13480 (-161)
20K → Half
5:29 | 8:02/mi
25K· 15.53 mi
2:01:34
Rank: #14087 (-607)
Half → 25K
20:27 | 8:26/mi
30K· 18.64 mi
2:28:49
Rank: #14565 (-478)
25K → 30K
27:15 | 8:46/mi
20M
2:40:43
Rank: #14633 (-68)
30K → 20M
11:54 | 8:45/mi
21M
2:50:18
Rank: #14733 (-100)
20M → 21M
9:35 | 9:35/mi
35K· 21.75 mi
2:56:46
Rank: #14765 (-32)
21M → 35K
6:28 | 8:39/mi
23M
3:08:15
Rank: #14904 (-139)
35K → 23M
11:29 | 9:10/mi
24M
3:17:17
Rank: #15025 (-121)
23M → 24M
9:02 | 9:02/mi
40K· 24.85 mi
3:25:13
Rank: #15153 (-128)
24M → 40K
7:56 | 9:17/mi
25.2M
3:28:46
Rank: #15215 (-62)
40K → 25.2M
3:33 | 10:18/mi
Finish· 26.22 mi
3:37:29
Rank: #15262 (-47)
25.2M → Finish
8:43 | 8:33/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:41:07
Pace7:43 /mi
2nd Half
Distance13.11 mi
Time1:56:22
Pace8:53 /mi
📊Positive Split: 15.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:51:3622:557:2322:55
7:23
-
10K
6.21 mi11:15:1146:307:2923:35
7:35
+0:12
15K
9.32 mi11:39:181:10:377:3524:07
7:46
+0:11
20K
12.43 mi12:04:191:35:387:4225:01
8:03
+0:17
Half
13.11 mi12:09:481:41:077:435:29
8:02
-0:01
25K
15.53 mi12:30:152:01:347:5020:27
8:26
+0:24
30K
18.64 mi12:57:302:28:497:5927:15
8:46
+0:20
20M
20.00 mi13:09:242:40:438:0211:54
8:45
-0:01
21M
21.00 mi13:18:592:50:188:079:35
9:35
+0:50
35K
21.75 mi13:25:272:56:468:086:28
8:39
-0:56
23M
23.00 mi13:36:563:08:158:1111:29
9:10
+0:31
24M
24.00 mi13:45:583:17:178:139:02
9:02
-0:08
40K
24.85 mi13:53:543:25:138:157:56
9:17
+0:15
25.2M
25.20 mi13:57:273:28:468:173:33
10:18
+1:01
Finish
26.22 mi14:06:103:37:298:188:43
8:33
-1:45

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

7:23 /mi

Average Pace

8:18 /mi

Slowest Pace

10:18 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:41:07

46% of race

Time at Steady Pace

1:14:47

34% of race

Time at Slower Pace

41:35

19% of race

Average Pace: 8:18 /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 mi10:51:3622:557:2322:55
7:23
#11104
10K
6.21 mi11:15:1146:307:2923:35
7:35
#11981
15K
9.32 mi11:39:181:10:377:3524:07
7:46
#12649
20K
12.43 mi12:04:191:35:387:4225:01
8:03
#13319
Half
13.11 mi12:09:481:41:077:435:29
8:02
#13480
25K
15.53 mi12:30:152:01:347:5020:27
8:26
#14087
30K
18.64 mi12:57:302:28:497:5927:15
8:46
#14565
20M
20.00 mi13:09:242:40:438:0211:54
8:45
#14633
21M
21.00 mi13:18:592:50:188:079:35
9:35
#14733
35K
21.75 mi13:25:272:56:468:086:28
8:39
#14765
23M
23.00 mi13:36:563:08:158:1111:29
9:10
#14904
24M
24.00 mi13:45:583:17:178:139:02
9:02
#15025
40K
24.85 mi13:53:543:25:138:157:56
9:17
#15153
25.2M
25.20 mi13:57:273:28:468:173:33
10:18
#15215
Finish
26.22 mi14:06:103:37:298:188:43
8:33
#15262
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi111048746874614025(Top 49%)9954(Top 62%)9954(Top 499%)
10K6.21 mi3.10 mi11981-8779149-4039149-40312927(Top 46%)9565(Top 59%)9565(Top 479%)
15K9.32 mi3.11 mi12649-6689436-2879436-28714025(Top 49%)9954(Top 62%)9954(Top 499%)
20K12.43 mi3.11 mi13319-6709666-2309666-23015285(Top 54%)10449(Top 65%)10449(Top 523%)
Half13.11 mi0.68 mi13480-1619724-589724-5816139(Top 57%)10812(Top 67%)10812(Top 542%)
25K15.53 mi2.42 mi14087-6079953-2299953-22916754(Top 59%)10982(Top 68%)10982(Top 550%)
30K18.64 mi3.11 mi14565-47810097-14410097-14416420(Top 58%)10673(Top 66%)10673(Top 535%)
20M20.00 mi1.36 mi14633-6810102-510102-515399(Top 54%)10093(Top 63%)10093(Top 506%)
21M21.00 mi1.00 mi14733-10010120-1810120-1816437(Top 58%)10445(Top 65%)10445(Top 523%)
35K21.75 mi0.75 mi14765-3210115+510115+516287(Top 57%)10296(Top 64%)10296(Top 516%)
23M23.00 mi1.25 mi14904-13910155-4010155-4017183(Top 60%)10588(Top 66%)10588(Top 530%)
24M24.00 mi1.00 mi15025-12110166-1110166-1117519(Top 62%)10701(Top 66%)10701(Top 536%)
40K24.85 mi0.85 mi15153-12810179-1310179-1317716(Top 62%)10687(Top 66%)10687(Top 535%)
25.2M25.20 mi0.35 mi15215-6210193-1410193-1418212(Top 64%)10905(Top 68%)10905(Top 546%)
Finish26.22 mi1.02 mi15262-4710197-410197-416547(Top 58%)10176(Top 63%)10176(Top 510%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 49%
×21stories
+97ft-345ft

Overall

14025

Males

9954

M50-54

9954

5K→10K

3.1 - 6.2 mi

Top 46%
×5stories
+79ft-138ft

Overall

12927

Males

9565

M50-54

9565

10K→15K

6.2 - 9.3 mi

Top 49%
×3stories
+67ft-78ft

Overall

14025

Males

9954

M50-54

9954

15K→20K

9.3 - 12.4 mi

Top 54%
×5stories
+106ft-86ft

Overall

15285

Males

10449

M50-54

10449

20K→Half

12.4 - 13.1 mi

Top 57%
×2stories
+19ft-37ft

Overall

16139

Males

10812

M50-54

10812

Half→25K

13.1 - 15.5 mi

Top 59%
×4stories
+66ft-88ft

Overall

16754

Males

10982

M50-54

10982

25K→30K

15.5 - 18.6 mi

Top 58%
×9stories
+181ft-148ft

Overall

16420

Males

10673

M50-54

10673

30K→20M

18.6 - 20.0 mi

Top 54%
×5stories
+64ft-50ft

Overall

15399

Males

10093

M50-54

10093

20M→21M

20.0 - 21.0 mi

Top 58%
×8stories
+106ft-24ft

Overall

16437

Males

10445

M50-54

10445

21M→35K

21.0 - 21.8 mi

Top 57%
×7stories
+17ft-86ft

Overall

16287

Males

10296

M50-54

10296

35K→23M

21.8 - 23.0 mi

Top 60%
×5stories
+23ft-63ft

Overall

17183

Males

10588

M50-54

10588

23M→24M

23.0 - 24.0 mi

Top 62%
×6stories
+12ft-82ft

Overall

17519

Males

10701

M50-54

10701

24M→40K

24.0 - 24.9 mi

Top 62%
×1story
+6ft-20ft

Overall

17716

Males

10687

M50-54

10687

40K→25.2M

24.9 - 25.2 mi

Top 64%
×1story
+13ft-16ft

Overall

18212

Males

10905

M50-54

10905

25.2M→Finish

25.2 - 26.2 mi

Top 58%
×2stories
+22ft-21ft

Overall

16547

Males

10176

M50-54

10176

Passing Analysis

Category:
Athletes Passed
818
Passed By
4976
Net Change
-4158
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11104
5K → 10K47924-877#11104#11981
10K → 15K47715-668#11981#12649
15K → 20K65735-670#12649#13319
20K → Half5166-161#13319#13480
Half → 25K66673-607#13480#14087
25K → 30K124602-478#14087#14565
30K → 20M121189-68#14565#14633
20M → 21M72172-100#14633#14733
21M → 35K5385-32#14733#14765
35K → 23M77216-139#14765#14904
23M → 24M49170-121#14904#15025
24M → 40K30158-128#15025#15153
40K → 25.2M1981-62#15153#15215
25.2M → Finish4390-47#15215#15262
TOTALS8184976-4158
📊

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