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BOSTON MARATHON 2025

Arsenio Santos

Bib: 28535•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M55-59)
#0 / 1648
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
26:12
Rank: #19471
Start → 5K
26:12 | 8:26/mi
10K· 6.21 mi
51:21
Rank: #18392 (+1079)
5K → 10K
25:09 | 8:06/mi
15K· 9.32 mi
1:16:23
Rank: #17729 (+663)
10K → 15K
25:02 | 8:03/mi
20K· 12.43 mi
1:43:15
Rank: #18041 (-312)
15K → 20K
26:52 | 8:39/mi
Half· 13.11 mi
1:49:22
Rank: #18249 (-208)
20K → Half
6:07 | 8:58/mi
25K· 15.53 mi
2:11:53
Rank: #18845 (-596)
Half → 25K
22:31 | 9:17/mi
30K· 18.64 mi
2:42:41
Rank: #19473 (-628)
25K → 30K
30:48 | 9:55/mi
20M
2:56:35
Rank: #19705 (-232)
30K → 20M
13:54 | 10:14/mi
21M
3:07:43
Rank: #19891 (-186)
20M → 21M
11:08 | 11:08/mi
35K· 21.75 mi
3:14:57
Rank: #19944 (-53)
21M → 35K
7:14 | 9:40/mi
23M
3:27:06
Rank: #19935 (+9)
35K → 23M
12:09 | 9:42/mi
24M
3:36:44
Rank: #19950 (-15)
23M → 24M
9:38 | 9:38/mi
40K· 24.85 mi
3:45:03
Rank: #19946 (+4)
24M → 40K
8:19 | 9:44/mi
25.2M
3:48:45
Rank: #19940 (+6)
40K → 25.2M
3:42 | 10:44/mi
Finish· 26.22 mi
3:58:29
Rank: #20046 (-106)
25.2M → Finish
9:44 | 9:33/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:49:22
Pace8:21 /mi
2nd Half
Distance13.11 mi
Time2:09:07
Pace9:51 /mi
📊Positive Split: 18.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:47:4026:128:2626:12
8:26
-
10K
6.21 mi12:12:4951:218:1625:09
8:06
-0:20
15K
9.32 mi12:37:511:16:238:1225:02
8:03
-0:03
20K
12.43 mi13:04:431:43:158:1826:52
8:39
+0:36
Half
13.11 mi13:10:501:49:228:216:07
8:58
+0:19
25K
15.53 mi13:33:212:11:538:2922:31
9:17
+0:19
30K
18.64 mi14:04:092:42:418:4430:48
9:55
+0:38
20M
20.00 mi14:18:032:56:358:5013:54
10:14
+0:19
21M
21.00 mi14:29:113:07:438:5611:08
11:08
+0:54
35K
21.75 mi14:36:253:14:578:587:14
9:40
-1:28
23M
23.00 mi14:48:343:27:069:0012:09
9:42
+0:02
24M
24.00 mi14:58:123:36:449:029:38
9:38
-0:04
40K
24.85 mi15:06:313:45:039:038:19
9:44
+0:06
25.2M
25.20 mi15:10:133:48:459:053:42
10:44
+1:00
Finish
26.22 mi15:19:573:58:299:069:44
9:33
-1:11

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

8:03 /mi

Average Pace

9:06 /mi

Slowest Pace

11:08 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:49:22

46% of race

Time at Steady Pace

1:40:23

42% of race

Time at Slower Pace

28:44

12% of race

Average Pace: 9:06 /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 mi11:47:4026:128:2626:12
8:26
#19471
10K
6.21 mi12:12:4951:218:1625:09
8:06
#18392
15K
9.32 mi12:37:511:16:238:1225:02
8:03
#17729
20K
12.43 mi13:04:431:43:158:1826:52
8:39
#18041
Half
13.11 mi13:10:501:49:228:216:07
8:58
#18249
25K
15.53 mi13:33:212:11:538:2922:31
9:17
#18845
30K
18.64 mi14:04:092:42:418:4430:48
9:55
#19473
20M
20.00 mi14:18:032:56:358:5013:54
10:14
#19705
21M
21.00 mi14:29:113:07:438:5611:08
11:08
#19891
35K
21.75 mi14:36:253:14:578:587:14
9:40
#19944
23M
23.00 mi14:48:343:27:069:0012:09
9:42
#19935
24M
24.00 mi14:58:123:36:449:029:38
9:38
#19950
40K
24.85 mi15:06:313:45:039:038:19
9:44
#19946
25.2M
25.20 mi15:10:133:48:459:053:42
10:44
#19940
Finish
26.22 mi15:19:573:58:299:069:44
9:33
#20046
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi19471122321223216444(Top 58%)10988(Top 68%)10988(Top 667%)
10K6.21 mi3.10 mi18392+107911785+44711785+44717137(Top 60%)11304(Top 70%)11304(Top 686%)
15K9.32 mi3.11 mi17729+66311513+27211513+27216444(Top 58%)10988(Top 68%)10988(Top 667%)
20K12.43 mi3.11 mi18041-31211635-12211635-12219112(Top 67%)12077(Top 75%)12077(Top 733%)
Half13.11 mi0.68 mi18249-20811711-7611711-7621632(Top 76%)13174(Top 82%)13174(Top 799%)
25K15.53 mi2.42 mi18845-59611966-25511966-25521111(Top 74%)12897(Top 80%)12897(Top 783%)
30K18.64 mi3.11 mi19473-62812192-22612192-22621339(Top 75%)12863(Top 80%)12863(Top 781%)
20M20.00 mi1.36 mi19705-23212272-8012272-8021637(Top 76%)12872(Top 80%)12872(Top 781%)
21M21.00 mi1.00 mi19891-18612327-5512327-5521717(Top 76%)12838(Top 80%)12838(Top 779%)
35K21.75 mi0.75 mi19944-5312331-412331-420874(Top 73%)12379(Top 77%)12379(Top 751%)
23M23.00 mi1.25 mi19935+912294+3712294+3719431(Top 68%)11631(Top 72%)11631(Top 706%)
24M24.00 mi1.00 mi19950-1512278+1612278+1620097(Top 71%)11905(Top 74%)11905(Top 722%)
40K24.85 mi0.85 mi19946+412267+1112267+1119543(Top 69%)11570(Top 72%)11570(Top 702%)
25.2M25.20 mi0.35 mi19940+612251+1612251+1619738(Top 69%)11637(Top 72%)11637(Top 706%)
Finish26.22 mi1.02 mi20046-10612283-3212283-3221334(Top 75%)12441(Top 77%)12441(Top 755%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 58%
×21stories
+97ft-345ft

Overall

16444

Males

10988

M55-59

10988

5K→10K

3.1 - 6.2 mi

Top 60%
×5stories
+79ft-138ft

Overall

17137

Males

11304

M55-59

11304

10K→15K

6.2 - 9.3 mi

Top 58%
×3stories
+67ft-78ft

Overall

16444

Males

10988

M55-59

10988

15K→20K

9.3 - 12.4 mi

Top 67%
×5stories
+106ft-86ft

Overall

19112

Males

12077

M55-59

12077

20K→Half

12.4 - 13.1 mi

Top 76%
×2stories
+19ft-37ft

Overall

21632

Males

13174

M55-59

13174

Half→25K

13.1 - 15.5 mi

Top 74%
×4stories
+66ft-88ft

Overall

21111

Males

12897

M55-59

12897

25K→30K

15.5 - 18.6 mi

Top 75%
×9stories
+181ft-148ft

Overall

21339

Males

12863

M55-59

12863

30K→20M

18.6 - 20.0 mi

Top 76%
×5stories
+64ft-50ft

Overall

21637

Males

12872

M55-59

12872

20M→21M

20.0 - 21.0 mi

Top 76%
×8stories
+106ft-24ft

Overall

21717

Males

12838

M55-59

12838

21M→35K

21.0 - 21.8 mi

Top 73%
×7stories
+17ft-86ft

Overall

20874

Males

12379

M55-59

12379

35K→23M

21.8 - 23.0 mi

Top 68%
×5stories
+23ft-63ft

Overall

19431

Males

11631

M55-59

11631

23M→24M

23.0 - 24.0 mi

Top 71%
×6stories
+12ft-82ft

Overall

20097

Males

11905

M55-59

11905

24M→40K

24.0 - 24.9 mi

Top 69%
×1story
+6ft-20ft

Overall

19543

Males

11570

M55-59

11570

40K→25.2M

24.9 - 25.2 mi

Top 69%
×1story
+13ft-16ft

Overall

19738

Males

11637

M55-59

11637

25.2M→Finish

25.2 - 26.2 mi

Top 75%
×2stories
+22ft-21ft

Overall

21334

Males

12441

M55-59

12441

Passing Analysis

Category:
Athletes Passed
2431
Passed By
3006
Net Change
-575
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19471
5K → 10K111233+1079#19471#18392
10K → 15K67815+663#18392#17729
15K → 20K101413-312#17729#18041
20K → Half10218-208#18041#18249
Half → 25K49645-596#18249#18845
25K → 30K81709-628#18845#19473
30K → 20M43275-232#19473#19705
20M → 21M47233-186#19705#19891
21M → 35K3790-53#19891#19944
35K → 23M9283+9#19944#19935
23M → 24M5772-15#19935#19950
24M → 40K6359+4#19950#19946
40K → 25.2M3327+6#19946#19940
25.2M → Finish28134-106#19940#20046
TOTALS24313006-575
📊

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