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BOSTON MARATHON 2025

Chun Shih Chen

Bib: 25533•M

NJ

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M75-79)
#0 / 52
Top 44%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
30:05
Rank: #24799
Start → 5K
9:41/mi
30:05 split
10K· 6.21 mi
1:00:16
Rank: #24732 (+67)
5K → 10K
9:43/mi
30:11 split
15K· 9.32 mi
1:30:32
Rank: #24611 (+121)
10K → 15K
9:45/mi
30:16 split
20K· 12.43 mi
2:01:55
Rank: #24559 (+52)
15K → 20K
10:06/mi
31:23 split
Half· 13.11 mi
2:08:29
Rank: #24528 (+31)
20K → Half
9:37/mi
6:34 split
25K· 15.53 mi
2:33:43
Rank: #24485 (+43)
Half → 25K
10:24/mi
25:14 split
30K· 18.64 mi
3:09:16
Rank: #24559 (-74)
25K → 30K
11:27/mi
35:33 split
20M
3:25:06
Rank: #24594 (-35)
30K → 20M
11:39/mi
15:50 split
21M
3:37:42
Rank: #24606 (-12)
20M → 21M
12:36/mi
12:36 split
35K· 21.75 mi
3:46:20
Rank: #24640 (-34)
21M → 35K
11:32/mi
8:38 split
23M
4:02:24
Rank: #24770 (-130)
35K → 23M
12:50/mi
16:04 split
24M
4:14:05
Rank: #24792 (-22)
23M → 24M
11:41/mi
11:41 split
40K· 24.85 mi
4:24:41
Rank: #24838 (-46)
24M → 40K
12:24/mi
10:36 split
25.2M
4:29:27
Rank: #24873 (-35)
40K → 25.2M
13:49/mi
4:46 split
Finish· 26.22 mi
4:41:23
Rank: #24947 (-74)
25.2M → Finish
11:43/mi
11:56 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:08:29
Pace9:48 /mi
2nd Half
Distance13.11 mi
Time2:32:54
Pace11:40 /mi
📊Positive Split: 19.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:45:5230:059:4130:05
9:41
-
10K
6.21 mi12:16:031:00:169:4230:11
9:43
+0:02
15K
9.32 mi12:46:191:30:329:4330:16
9:45
+0:02
20K
12.43 mi13:17:422:01:559:4931:23
10:06
+0:21
Half
13.11 mi13:24:162:08:299:486:34
9:37
-0:29
25K
15.53 mi13:49:302:33:439:5425:14
10:24
+0:47
30K
18.64 mi14:25:033:09:1610:0935:33
11:27
+1:03
20M
20.00 mi14:40:533:25:0610:1515:50
11:39
+0:12
21M
21.00 mi14:53:293:37:4210:2212:36
12:36
+0:57
35K
21.75 mi15:02:073:46:2010:248:38
11:32
-1:04
23M
23.00 mi15:18:114:02:2410:3216:04
12:50
+1:18
24M
24.00 mi15:29:524:14:0510:3511:41
11:41
-1:09
40K
24.85 mi15:40:284:24:4110:3910:36
12:24
+0:43
25.2M
25.20 mi15:45:144:29:2710:424:46
13:49
+1:25
Finish
26.22 mi15:57:104:41:2310:4411:56
11:43
-2:06

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

9:37 /mi

Average Pace

10:44 /mi

Slowest Pace

13:49 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:33:43

55% of race

Time at Steady Pace

1:23:38

30% of race

Time at Slower Pace

44:02

16% of race

Average Pace: 10:44 /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 mi11:45:5230:059:4130:05
9:41
#24799
10K
6.21 mi12:16:031:00:169:4230:11
9:43
#24732
15K
9.32 mi12:46:191:30:329:4330:16
9:45
#24611
20K
12.43 mi13:17:422:01:559:4931:23
10:06
#24559
Half
13.11 mi13:24:162:08:299:486:34
9:37
#24528
25K
15.53 mi13:49:302:33:439:5425:14
10:24
#24485
30K
18.64 mi14:25:033:09:1610:0935:33
11:27
#24559
20M
20.00 mi14:40:533:25:0610:1515:50
11:39
#24594
21M
21.00 mi14:53:293:37:4210:2212:36
12:36
#24606
35K
21.75 mi15:02:073:46:2010:248:38
11:32
#24640
23M
23.00 mi15:18:114:02:2410:3216:04
12:50
#24770
24M
24.00 mi15:29:524:14:0510:3511:41
11:41
#24792
40K
24.85 mi15:40:284:24:4110:3910:36
12:24
#24838
25.2M
25.20 mi15:45:144:29:2710:424:46
13:49
#24873
Finish
26.22 mi15:57:104:41:2310:4411:56
11:43
#24947
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM75-79Seg. OverallSeg. MalesSeg. M75-79
5K3.11 mi3.11 mi24799146271462724398(Top 86%)14439(Top 90%)14439(Top 27767%)
10K6.21 mi3.10 mi24732+6714590+3714590+3724656(Top 87%)14544(Top 90%)14544(Top 27969%)
15K9.32 mi3.11 mi24611+12114529+6114529+6124398(Top 86%)14439(Top 90%)14439(Top 27767%)
20K12.43 mi3.11 mi24559+5214490+3914490+3924443(Top 86%)14425(Top 90%)14425(Top 27740%)
Half13.11 mi0.68 mi24528+3114474+1614474+1623912(Top 84%)14202(Top 88%)14202(Top 27312%)
25K15.53 mi2.42 mi24485+4314450+2414450+2424187(Top 85%)14283(Top 89%)14283(Top 27467%)
30K18.64 mi3.11 mi24559-7414461-1114461-1124768(Top 87%)14427(Top 90%)14427(Top 27744%)
20M20.00 mi1.36 mi24594-3514463-214463-224791(Top 87%)14373(Top 89%)14373(Top 27640%)
21M21.00 mi1.00 mi24606-1214454+914454+924532(Top 86%)14161(Top 88%)14161(Top 27233%)
35K21.75 mi0.75 mi24640-3414462-814462-825155(Top 89%)14420(Top 90%)14420(Top 27731%)
23M23.00 mi1.25 mi24770-13014506-4414506-4426193(Top 92%)14933(Top 93%)14933(Top 28717%)
24M24.00 mi1.00 mi24792-2214497+914497+925220(Top 89%)14419(Top 90%)14419(Top 27729%)
40K24.85 mi0.85 mi24838-4614508-1114508-1125523(Top 90%)14537(Top 90%)14537(Top 27956%)
25.2M25.20 mi0.35 mi24873-3514519-1114519-1126076(Top 92%)14789(Top 92%)14789(Top 28440%)
Finish26.22 mi1.02 mi24947-7414548-2914548-2926428(Top 93%)15009(Top 93%)15009(Top 28863%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 86%
×21story building
+97ft-345ft

Overall

24398

Males

14439

M75-79

14439

5K→10K

3.1 - 6.2 mi

Top 87%
×5story building
+79ft-138ft

Overall

24656

Males

14544

M75-79

14544

10K→15K

6.2 - 9.3 mi

Top 86%
×3story building
+67ft-78ft

Overall

24398

Males

14439

M75-79

14439

15K→20K

9.3 - 12.4 mi

Top 86%
×5story building
+106ft-86ft

Overall

24443

Males

14425

M75-79

14425

20K→Half

12.4 - 13.1 mi

Top 84%
×2story building
+19ft-37ft

Overall

23912

Males

14202

M75-79

14202

Half→25K

13.1 - 15.5 mi

Top 85%
×4story building
+66ft-88ft

Overall

24187

Males

14283

M75-79

14283

25K→30K

15.5 - 18.6 mi

Top 87%
×9story building
+181ft-148ft

Overall

24768

Males

14427

M75-79

14427

30K→20M

18.6 - 20.0 mi

Top 87%
×5story building
+64ft-50ft

Overall

24791

Males

14373

M75-79

14373

20M→21M

20.0 - 21.0 mi

Top 86%
×8story building
+106ft-24ft

Overall

24532

Males

14161

M75-79

14161

21M→35K

21.0 - 21.8 mi

Top 89%
×7story building
+17ft-86ft

Overall

25155

Males

14420

M75-79

14420

35K→23M

21.8 - 23.0 mi

Top 92%
×5story building
+23ft-63ft

Overall

26193

Males

14933

M75-79

14933

23M→24M

23.0 - 24.0 mi

Top 89%
×6story building
+12ft-82ft

Overall

25220

Males

14419

M75-79

14419

24M→40K

24.0 - 24.9 mi

Top 90%
×1story
+6ft-20ft

Overall

25523

Males

14537

M75-79

14537

40K→25.2M

24.9 - 25.2 mi

Top 92%
×1story
+13ft-16ft

Overall

26076

Males

14789

M75-79

14789

25.2M→Finish

25.2 - 26.2 mi

Top 93%
×2story building
+22ft-21ft

Overall

26428

Males

15009

M75-79

15009

Passing Analysis

Category:
Athletes Passed
1074
Passed By
1222
Net Change
-148
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#24799
5K → 10K238171+67#24799#24732
10K → 15K19574+121#24732#24611
15K → 20K159107+52#24611#24559
20K → Half4312+31#24559#24528
Half → 25K12683+43#24528#24485
25K → 30K107181-74#24485#24559
30K → 20M3873-35#24559#24594
20M → 21M5769-12#24594#24606
21M → 35K1852-34#24606#24640
35K → 23M22152-130#24640#24770
23M → 24M3456-22#24770#24792
24M → 40K1763-46#24792#24838
40K → 25.2M641-35#24838#24873
25.2M → Finish1488-74#24873#24947
TOTALS10741222-148
📊

Passing Visuals

Category:
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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