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BOSTON MARATHON 2025

Jin-Sheng Su

Bib: 10879•M

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 32%
Gender (Male)
#0 / 16105
Top 45%
Masters (Masters Men)
#0 / 10463
Top 33%
Division (M50-54)
#0 / 1996
Top 32%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:52
Rank: #10928
Start → 5K
22:52 | 7:22/mi
10K· 6.21 mi
44:55
Rank: #9702 (+1226)
5K → 10K
22:03 | 7:06/mi
15K· 9.32 mi
1:07:00
Rank: #9237 (+465)
10K → 15K
22:05 | 7:06/mi
20K· 12.43 mi
1:29:30
Rank: #9007 (+230)
15K → 20K
22:30 | 7:15/mi
Half· 13.11 mi
1:34:32
Rank: #9086 (-79)
20K → Half
5:02 | 7:23/mi
25K· 15.53 mi
1:52:29
Rank: #9032 (+54)
Half → 25K
17:57 | 7:24/mi
30K· 18.64 mi
2:16:16
Rank: #8930 (+102)
25K → 30K
23:47 | 7:39/mi
20M
2:26:59
Rank: #8945 (-15)
30K → 20M
10:43 | 7:53/mi
21M
2:35:13
Rank: #8908 (+37)
20M → 21M
8:14 | 8:14/mi
35K· 21.75 mi
2:41:09
Rank: #9001 (-93)
21M → 35K
5:56 | 7:56/mi
23M
2:51:12
Rank: #9022 (-21)
35K → 23M
10:03 | 8:02/mi
24M
2:59:04
Rank: #9040 (-18)
23M → 24M
7:52 | 7:52/mi
40K· 24.85 mi
3:05:50
Rank: #9039 (+1)
24M → 40K
6:46 | 7:55/mi
25.2M
3:08:47
Rank: #9022 (+17)
40K → 25.2M
2:57 | 8:33/mi
Finish· 26.22 mi
3:16:42
Rank: #9086 (-64)
25.2M → Finish
7:55 | 7:46/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:34:32
Pace7:13 /mi
2nd Half
Distance13.11 mi
Time1:42:10
Pace7:48 /mi
📊Positive Split: 8.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:49:2122:527:2222:52
7:22
-
10K
6.21 mi11:11:2444:557:1422:03
7:06
-0:16
15K
9.32 mi11:33:291:07:007:1122:05
7:06
0:00
20K
12.43 mi11:55:591:29:307:1222:30
7:15
+0:09
Half
13.11 mi12:01:011:34:327:135:02
7:23
+0:08
25K
15.53 mi12:18:581:52:297:1417:57
7:24
+0:01
30K
18.64 mi12:42:452:16:167:1923:47
7:39
+0:15
20M
20.00 mi12:53:282:26:597:2110:43
7:53
+0:14
21M
21.00 mi13:01:422:35:137:238:14
8:14
+0:21
35K
21.75 mi13:07:382:41:097:255:56
7:56
-0:18
23M
23.00 mi13:17:412:51:127:2710:03
8:02
+0:06
24M
24.00 mi13:25:332:59:047:287:52
7:52
-0:10
40K
24.85 mi13:32:193:05:507:296:46
7:55
+0:03
25.2M
25.20 mi13:35:163:08:477:292:57
8:33
+0:38
Finish
26.22 mi13:43:113:16:427:307:55
7:46
-0:47

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

7:06 /mi

Average Pace

7:30 /mi

Slowest Pace

8:33 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:52:29

57% of race

Time at Steady Pace

1:02:59

32% of race

Time at Slower Pace

21:14

11% of race

Average Pace: 7:30 /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 mi10:49:2122:527:2222:52
7:22
#10928
10K
6.21 mi11:11:2444:557:1422:03
7:06
#9702
15K
9.32 mi11:33:291:07:007:1122:05
7:06
#9237
20K
12.43 mi11:55:591:29:307:1222:30
7:15
#9007
Half
13.11 mi12:01:011:34:327:135:02
7:23
#9086
25K
15.53 mi12:18:581:52:297:1417:57
7:24
#9032
30K
18.64 mi12:42:452:16:167:1923:47
7:39
#8930
20M
20.00 mi12:53:282:26:597:2110:43
7:53
#8945
21M
21.00 mi13:01:422:35:137:238:14
8:14
#8908
35K
21.75 mi13:07:382:41:097:255:56
7:56
#9001
23M
23.00 mi13:17:412:51:127:2710:03
8:02
#9022
24M
24.00 mi13:25:332:59:047:287:52
7:52
#9040
40K
24.85 mi13:32:193:05:507:296:46
7:55
#9039
25.2M
25.20 mi13:35:163:08:477:292:57
8:33
#9022
Finish
26.22 mi13:43:113:16:427:307:55
7:46
#9086
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi10928865386538385(Top 30%)7170(Top 45%)7170(Top 359%)
10K6.21 mi3.10 mi9702+12268012+6418012+6418653(Top 30%)7393(Top 46%)7393(Top 370%)
15K9.32 mi3.11 mi9237+4657718+2947718+2948385(Top 30%)7170(Top 45%)7170(Top 359%)
20K12.43 mi3.11 mi9007+2307568+1507568+1508545(Top 30%)7192(Top 45%)7192(Top 360%)
Half13.11 mi0.68 mi9086-797612-447612-4410601(Top 37%)8323(Top 52%)8323(Top 417%)
25K15.53 mi2.42 mi9032+547545+677545+679179(Top 32%)7435(Top 46%)7435(Top 372%)
30K18.64 mi3.11 mi8930+1027422+1237422+1238855(Top 31%)7062(Top 44%)7062(Top 354%)
20M20.00 mi1.36 mi8945-157406+167406+169591(Top 34%)7304(Top 45%)7304(Top 366%)
21M21.00 mi1.00 mi8908+377348+587348+588774(Top 31%)6693(Top 42%)6693(Top 335%)
35K21.75 mi0.75 mi9001-937382-347382-3411731(Top 41%)8178(Top 51%)8178(Top 410%)
23M23.00 mi1.25 mi9022-217348+347348+3410194(Top 36%)7327(Top 45%)7327(Top 367%)
24M24.00 mi1.00 mi9040-187332+167332+1610294(Top 36%)7314(Top 45%)7314(Top 366%)
40K24.85 mi0.85 mi9039+17292+407292+409531(Top 34%)6805(Top 42%)6805(Top 341%)
25.2M25.20 mi0.35 mi9022+177263+297263+299057(Top 32%)6476(Top 40%)6476(Top 324%)
Finish26.22 mi1.02 mi9086-647258+57258+511180(Top 39%)7598(Top 47%)7598(Top 381%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 30%
×21stories
+97ft-345ft

Overall

8385

Males

7170

M50-54

7170

5K→10K

3.1 - 6.2 mi

Top 30%
×5stories
+79ft-138ft

Overall

8653

Males

7393

M50-54

7393

10K→15K

6.2 - 9.3 mi

Top 30%
×3stories
+67ft-78ft

Overall

8385

Males

7170

M50-54

7170

15K→20K

9.3 - 12.4 mi

Top 30%
×5stories
+106ft-86ft

Overall

8545

Males

7192

M50-54

7192

20K→Half

12.4 - 13.1 mi

Top 37%
×2stories
+19ft-37ft

Overall

10601

Males

8323

M50-54

8323

Half→25K

13.1 - 15.5 mi

Top 32%
×4stories
+66ft-88ft

Overall

9179

Males

7435

M50-54

7435

25K→30K

15.5 - 18.6 mi

Top 31%
×9stories
+181ft-148ft

Overall

8855

Males

7062

M50-54

7062

30K→20M

18.6 - 20.0 mi

Top 34%
×5stories
+64ft-50ft

Overall

9591

Males

7304

M50-54

7304

20M→21M

20.0 - 21.0 mi

Top 31%
×8stories
+106ft-24ft

Overall

8774

Males

6693

M50-54

6693

21M→35K

21.0 - 21.8 mi

Top 41%
×7stories
+17ft-86ft

Overall

11731

Males

8178

M50-54

8178

35K→23M

21.8 - 23.0 mi

Top 36%
×5stories
+23ft-63ft

Overall

10194

Males

7327

M50-54

7327

23M→24M

23.0 - 24.0 mi

Top 36%
×6stories
+12ft-82ft

Overall

10294

Males

7314

M50-54

7314

24M→40K

24.0 - 24.9 mi

Top 34%
×1story
+6ft-20ft

Overall

9531

Males

6805

M50-54

6805

40K→25.2M

24.9 - 25.2 mi

Top 32%
×1story
+13ft-16ft

Overall

9057

Males

6476

M50-54

6476

25.2M→Finish

25.2 - 26.2 mi

Top 39%
×2stories
+22ft-21ft

Overall

11180

Males

7598

M50-54

7598

Passing Analysis

Category:
Athletes Passed
3086*
Passed By
1244
Net Change
+1842
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10928
5K → 10K1239*13+1226#10928#9702
10K → 15K48419+465#9702#9237
15K → 20K28656+230#9237#9007
20K → Half1392-79#9007#9086
Half → 25K183129+54#9086#9032
25K → 30K267165+102#9032#8930
30K → 20M97112-15#8930#8945
20M → 21M11376+37#8945#8908
21M → 35K47140-93#8908#9001
35K → 23M106127-21#9001#9022
23M → 24M6381-18#9022#9040
24M → 40K8887+1#9040#9039
40K → 25.2M4831+17#9039#9022
25.2M → Finish52116-64#9022#9086
TOTALS3086*1244+1842

* 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