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BOSTON MARATHON 2025

Sen-Hsi Su

Bib: 14784•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
23:10
Rank: #11849
Start → 5K
23:10 | 7:27/mi
10K· 6.21 mi
47:09
Rank: #12916 (-1067)
5K → 10K
23:59 | 7:43/mi
15K· 9.32 mi
1:11:56
Rank: #13897 (-981)
10K → 15K
24:47 | 7:59/mi
20K· 12.43 mi
1:38:22
Rank: #15233 (-1336)
15K → 20K
26:26 | 8:30/mi
Half· 13.11 mi
1:44:09
Rank: #15488 (-255)
20K → Half
5:47 | 8:29/mi
25K· 15.53 mi
2:05:11
Rank: #16013 (-525)
Half → 25K
21:02 | 8:41/mi
30K· 18.64 mi
2:34:45
Rank: #16848 (-835)
25K → 30K
29:34 | 9:31/mi
20M
2:47:43
Rank: #17047 (-199)
30K → 20M
12:58 | 9:33/mi
21M
2:57:42
Rank: #17103 (-56)
20M → 21M
9:59 | 9:59/mi
35K· 21.75 mi
3:04:15
Rank: #17082 (+21)
21M → 35K
6:33 | 8:45/mi
23M
3:15:26
Rank: #16993 (+89)
35K → 23M
11:11 | 8:56/mi
24M
3:24:00
Rank: #16885 (+108)
23M → 24M
8:34 | 8:34/mi
40K· 24.85 mi
3:32:00
Rank: #16948 (-63)
24M → 40K
8:00 | 9:21/mi
25.2M
3:35:36
Rank: #16982 (-34)
40K → 25.2M
3:36 | 10:26/mi
Finish· 26.22 mi
3:45:15
Rank: #17205 (-223)
25.2M → Finish
9:39 | 9:28/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:44:09
Pace7:57 /mi
2nd Half
Distance13.11 mi
Time2:01:06
Pace9:14 /mi
📊Positive Split: 16.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:53:0023:107:2723:10
7:27
-
10K
6.21 mi11:16:5947:097:3523:59
7:43
+0:16
15K
9.32 mi11:41:461:11:567:4324:47
7:59
+0:16
20K
12.43 mi12:08:121:38:227:5526:26
8:30
+0:31
Half
13.11 mi12:13:591:44:097:575:47
8:29
-0:01
25K
15.53 mi12:35:012:05:118:0421:02
8:41
+0:12
30K
18.64 mi13:04:352:34:458:1829:34
9:31
+0:50
20M
20.00 mi13:17:332:47:438:2312:58
9:33
+0:02
21M
21.00 mi13:27:322:57:428:289:59
9:59
+0:26
35K
21.75 mi13:34:053:04:158:286:33
8:45
-1:14
23M
23.00 mi13:45:163:15:268:3011:11
8:56
+0:11
24M
24.00 mi13:53:503:24:008:308:34
8:34
-0:22
40K
24.85 mi14:01:503:32:008:328:00
9:21
+0:47
25.2M
25.20 mi14:05:263:35:368:333:36
10:26
+1:05
Finish
26.22 mi14:15:053:45:158:369:39
9:28
-0:58

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

7:27 /mi

Average Pace

8:36 /mi

Slowest Pace

10:26 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:11:56

32% of race

Time at Steady Pace

1:19:33

35% of race

Time at Slower Pace

1:13:46

33% of race

Average Pace: 8:35 /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 mi10:53:0023:107:2723:10
7:27
#11849
10K
6.21 mi11:16:5947:097:3523:59
7:43
#12916
15K
9.32 mi11:41:461:11:567:4324:47
7:59
#13897
20K
12.43 mi12:08:121:38:227:5526:26
8:30
#15233
Half
13.11 mi12:13:591:44:097:575:47
8:29
#15488
25K
15.53 mi12:35:012:05:118:0421:02
8:41
#16013
30K
18.64 mi13:04:352:34:458:1829:34
9:31
#16848
20M
20.00 mi13:17:332:47:438:2312:58
9:33
#17047
21M
21.00 mi13:27:322:57:428:289:59
9:59
#17103
35K
21.75 mi13:34:053:04:158:286:33
8:45
#17082
23M
23.00 mi13:45:163:15:268:3011:11
8:56
#16993
24M
24.00 mi13:53:503:24:008:308:34
8:34
#16885
40K
24.85 mi14:01:503:32:008:328:00
9:21
#16948
25.2M
25.20 mi14:05:263:35:368:333:36
10:26
#16982
Finish
26.22 mi14:15:053:45:158:369:39
9:28
#17205
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi118499110911015857(Top 56%)10740(Top 67%)10740(Top 538%)
10K6.21 mi3.10 mi12916-10679593-4839593-48314063(Top 50%)10033(Top 62%)10033(Top 503%)
15K9.32 mi3.11 mi13897-9819948-3559948-35515857(Top 56%)10740(Top 67%)10740(Top 538%)
20K12.43 mi3.11 mi15233-133610474-52610474-52618291(Top 64%)11740(Top 73%)11740(Top 588%)
Half13.11 mi0.68 mi15488-25510588-11410588-11418989(Top 67%)12029(Top 75%)12029(Top 603%)
25K15.53 mi2.42 mi16013-52510794-20610794-20618225(Top 64%)11623(Top 72%)11623(Top 582%)
30K18.64 mi3.11 mi16848-83511075-28111075-28119994(Top 70%)12280(Top 76%)12280(Top 615%)
20M20.00 mi1.36 mi17047-19911124-4911124-4919338(Top 68%)11841(Top 74%)11841(Top 593%)
21M21.00 mi1.00 mi17103-5611114+1011114+1018221(Top 64%)11262(Top 70%)11262(Top 564%)
35K21.75 mi0.75 mi17082+2111077+3711077+3716993(Top 60%)10608(Top 66%)10608(Top 531%)
23M23.00 mi1.25 mi16993+8911016+6111016+6115863(Top 56%)10011(Top 62%)10011(Top 502%)
24M24.00 mi1.00 mi16885+10810950+6610950+6614931(Top 53%)9558(Top 59%)9558(Top 479%)
40K24.85 mi0.85 mi16948-6310945+510945+518084(Top 64%)10873(Top 68%)10873(Top 545%)
25.2M25.20 mi0.35 mi16982-34109451094518741(Top 66%)11185(Top 69%)11185(Top 560%)
Finish26.22 mi1.02 mi17205-22311027-8211027-8221050(Top 74%)12311(Top 76%)12311(Top 617%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 56%
×21stories
+97ft-345ft

Overall

15857

Males

10740

M50-54

10740

5K→10K

3.1 - 6.2 mi

Top 50%
×5stories
+79ft-138ft

Overall

14063

Males

10033

M50-54

10033

10K→15K

6.2 - 9.3 mi

Top 56%
×3stories
+67ft-78ft

Overall

15857

Males

10740

M50-54

10740

15K→20K

9.3 - 12.4 mi

Top 64%
×5stories
+106ft-86ft

Overall

18291

Males

11740

M50-54

11740

20K→Half

12.4 - 13.1 mi

Top 67%
×2stories
+19ft-37ft

Overall

18989

Males

12029

M50-54

12029

Half→25K

13.1 - 15.5 mi

Top 64%
×4stories
+66ft-88ft

Overall

18225

Males

11623

M50-54

11623

25K→30K

15.5 - 18.6 mi

Top 70%
×9stories
+181ft-148ft

Overall

19994

Males

12280

M50-54

12280

30K→20M

18.6 - 20.0 mi

Top 68%
×5stories
+64ft-50ft

Overall

19338

Males

11841

M50-54

11841

20M→21M

20.0 - 21.0 mi

Top 64%
×8stories
+106ft-24ft

Overall

18221

Males

11262

M50-54

11262

21M→35K

21.0 - 21.8 mi

Top 60%
×7stories
+17ft-86ft

Overall

16993

Males

10608

M50-54

10608

35K→23M

21.8 - 23.0 mi

Top 56%
×5stories
+23ft-63ft

Overall

15863

Males

10011

M50-54

10011

23M→24M

23.0 - 24.0 mi

Top 53%
×6stories
+12ft-82ft

Overall

14931

Males

9558

M50-54

9558

24M→40K

24.0 - 24.9 mi

Top 64%
×1story
+6ft-20ft

Overall

18084

Males

10873

M50-54

10873

40K→25.2M

24.9 - 25.2 mi

Top 66%
×1story
+13ft-16ft

Overall

18741

Males

11185

M50-54

11185

25.2M→Finish

25.2 - 26.2 mi

Top 74%
×2stories
+22ft-21ft

Overall

21050

Males

12311

M50-54

12311

Passing Analysis

Category:
Athletes Passed
868
Passed By
6224
Net Change
-5356
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11849
5K → 10K351102-1067#11849#12916
10K → 15K371018-981#12916#13897
15K → 20K371373-1336#13897#15233
20K → Half5260-255#15233#15488
Half → 25K68593-525#15488#16013
25K → 30K67902-835#16013#16848
30K → 20M48247-199#16848#17047
20M → 21M99155-56#17047#17103
21M → 35K7958+21#17103#17082
35K → 23M15162+89#17082#16993
23M → 24M13527+108#16993#16885
24M → 40K55118-63#16885#16948
40K → 25.2M2862-34#16948#16982
25.2M → Finish24247-223#16982#17205
TOTALS8686224-5356
📊

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