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BOSTON MARATHON 2025

Jim Kasperik

Bib: 27880•M

PA

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

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
10:19/mi
32:03
↑ 97↓ 3451.5%
10K· 6.21 mi
10:34/mi
1:04:54
↑ 79↓ 1380.4%
15K· 9.32 mi
10:29/mi
1:37:28
↑ 67↓ 78
20K· 12.43 mi
11:06/mi
2:11:56
↑ 106↓ 860.1%
Half· 13.11 mi
10:20/mi
2:18:59
↑ 19↓ 370.5%
25K· 15.53 mi
11:14/mi
2:46:12
↑ 66↓ 880.2%
30K· 18.64 mi
12:16/mi
3:24:20
↑ 181↓ 1480.2%
20M
12:18/mi
3:41:03
↑ 64↓ 500.2%
21M
13:42/mi
3:54:45
↑ 106↓ 241.6%
35K· 21.75 mi
12:18/mi
4:03:57
↑ 17↓ 861.7%
23M
12:20/mi
4:19:24
↑ 23↓ 630.6%
24M
11:48/mi
4:31:12
↓ 821.3%
40K· 24.85 mi
12:10/mi
4:41:36
↓ 200.3%
25.2M
12:51/mi
4:46:02
↑ 13↓ 160.2%
Finish· 26.22 mi
12:11/mi
4:58:27
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:18:59
Pace10:36 /mi
2nd Half
Distance13.11 mi
Time2:39:28
Pace12:10 /mi
📊Positive Split: 14.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:49:2632:0310:1932:03
10:19
-
10K
6.21 mi12:22:171:04:5410:2732:51
10:34
+0:15
15K
9.32 mi12:54:511:37:2810:2732:34
10:29
-0:05
20K
12.43 mi13:29:192:11:5610:3734:28
11:06
+0:37
Half
13.11 mi13:36:222:18:5910:367:03
10:20
-0:46
25K
15.53 mi14:03:352:46:1210:4227:13
11:14
+0:54
30K
18.64 mi14:41:433:24:2010:5838:08
12:16
+1:02
20M
20.00 mi14:58:263:41:0311:0316:43
12:18
+0:02
21M
21.00 mi15:12:083:54:4511:1113:42
13:42
+1:24
35K
21.75 mi15:21:204:03:5711:139:12
12:18
-1:24
23M
23.00 mi15:36:474:19:2411:1715:27
12:20
+0:02
24M
24.00 mi15:48:354:31:1211:1811:48
11:48
-0:32
40K
24.85 mi15:58:594:41:3611:2010:24
12:10
+0:22
25.2M
25.20 mi16:03:254:46:0211:214:26
12:51
+0:41
Finish
26.22 mi16:15:504:58:2711:2312:25
12:11
-0:40

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

10:19 /mi

Average Pace

11:23 /mi

Slowest Pace

13:42 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:46:12

56% of race

Time at Steady Pace

1:54:07

38% of race

Time at Slower Pace

18:08

6% of race

Average Pace: 11:23 /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 mi11:49:2632:0310:1932:03
10:19
#26328
10K
6.21 mi12:22:171:04:5410:2732:51
10:34
#26383
15K
9.32 mi12:54:511:37:2810:2732:34
10:29
#26197
20K
12.43 mi13:29:192:11:5610:3734:28
11:06
#26191
Half
13.11 mi13:36:222:18:5910:367:03
10:20
#26141
25K
15.53 mi14:03:352:46:1210:4227:13
11:14
#26032
30K
18.64 mi14:41:433:24:2010:5838:08
12:16
#26003
20M
20.00 mi14:58:263:41:0311:0316:43
12:18
#25993
21M
21.00 mi15:12:083:54:4511:1113:42
13:42
#26000
35K
21.75 mi15:21:204:03:5711:139:12
12:18
#26017
23M
23.00 mi15:36:474:19:2411:1715:27
12:20
#26017
24M
24.00 mi15:48:354:31:1211:1811:48
11:48
#26009
40K
24.85 mi15:58:594:41:3611:2010:24
12:10
#25996
25.2M
25.20 mi16:03:254:46:0211:214:26
12:51
#25989
Finish
26.22 mi16:15:504:58:2711:2312:25
12:11
#26054
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi26328153231532325904(Top 91%)15097(Top 94%)15097(Top 756%)
10K6.21 mi3.10 mi26383-5515328-515328-526397(Top 93%)15319(Top 95%)15319(Top 767%)
15K9.32 mi3.11 mi26197+18615239+8915239+8925904(Top 91%)15097(Top 94%)15097(Top 756%)
20K12.43 mi3.11 mi26191+615243-415243-426146(Top 92%)15195(Top 94%)15195(Top 761%)
Half13.11 mi0.68 mi26141+5015216+2715216+2725510(Top 90%)14894(Top 92%)14894(Top 746%)
25K15.53 mi2.42 mi26032+10915149+6715149+6725516(Top 90%)14872(Top 92%)14872(Top 745%)
30K18.64 mi3.11 mi26003+2915107+4215107+4225915(Top 91%)14952(Top 93%)14952(Top 749%)
20M20.00 mi1.36 mi25993+1015094+1315094+1325678(Top 90%)14780(Top 92%)14780(Top 740%)
21M21.00 mi1.00 mi26000-715087+715087+725887(Top 91%)14836(Top 92%)14836(Top 743%)
35K21.75 mi0.75 mi26017-17150871508726247(Top 92%)14965(Top 93%)14965(Top 750%)
23M23.00 mi1.25 mi2601715080+715080+725581(Top 90%)14618(Top 91%)14618(Top 732%)
24M24.00 mi1.00 mi26009+815068+1215068+1225411(Top 89%)14514(Top 90%)14514(Top 727%)
40K24.85 mi0.85 mi25996+1315057+1115057+1125182(Top 89%)14360(Top 89%)14360(Top 719%)
25.2M25.20 mi0.35 mi25989+715050+715050+724832(Top 87%)14181(Top 88%)14181(Top 710%)
Finish26.22 mi1.02 mi26054-6515069-1915069-1926990(Top 95%)15296(Top 95%)15296(Top 766%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 91%
×21story building
+97ft-345ft

Overall

25904

Males

15097

M50-54

15097

5K→10K

3.1 - 6.2 mi

Top 93%
×5story building
+79ft-138ft

Overall

26397

Males

15319

M50-54

15319

10K→15K

6.2 - 9.3 mi

Top 91%
×3story building
+67ft-78ft

Overall

25904

Males

15097

M50-54

15097

15K→20K

9.3 - 12.4 mi

Top 92%
×5story building
+106ft-86ft

Overall

26146

Males

15195

M50-54

15195

20K→Half

12.4 - 13.1 mi

Top 90%
×2story building
+19ft-37ft

Overall

25510

Males

14894

M50-54

14894

Half→25K

13.1 - 15.5 mi

Top 90%
×4story building
+66ft-88ft

Overall

25516

Males

14872

M50-54

14872

25K→30K

15.5 - 18.6 mi

Top 91%
×9story building
+181ft-148ft

Overall

25915

Males

14952

M50-54

14952

30K→20M

18.6 - 20.0 mi

Top 90%
×5story building
+64ft-50ft

Overall

25678

Males

14780

M50-54

14780

20M→21M

20.0 - 21.0 mi

Top 91%
×8story building
+106ft-24ft

Overall

25887

Males

14836

M50-54

14836

21M→35K

21.0 - 21.8 mi

Top 92%
×7story building
+17ft-86ft

Overall

26247

Males

14965

M50-54

14965

35K→23M

21.8 - 23.0 mi

Top 90%
×5story building
+23ft-63ft

Overall

25581

Males

14618

M50-54

14618

23M→24M

23.0 - 24.0 mi

Top 89%
×6story building
+12ft-82ft

Overall

25411

Males

14514

M50-54

14514

24M→40K

24.0 - 24.9 mi

Top 89%
×1story
+6ft-20ft

Overall

25182

Males

14360

M50-54

14360

40K→25.2M

24.9 - 25.2 mi

Top 87%
×1story
+13ft-16ft

Overall

24832

Males

14181

M50-54

14181

25.2M→Finish

25.2 - 26.2 mi

Top 95%
×2story building
+22ft-21ft

Overall

26990

Males

15296

M50-54

15296

Passing Analysis

Category:
Athletes Passed
1056
Passed By
782
Net Change
+274
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#26328
5K → 10K141196-55#26328#26383
10K → 15K22640+186#26383#26197
15K → 20K130124+6#26197#26191
20K → Half522+50#26191#26141
Half → 25K13930+109#26141#26032
25K → 30K12899+29#26032#26003
30K → 20M6151+10#26003#25993
20M → 21M3845-7#25993#26000
21M → 35K2239-17#26000#26017
35K → 23M41410#26017#26017
23M → 24M3123+8#26017#26009
24M → 40K2916+13#26009#25996
40K → 25.2M147+7#25996#25989
25.2M → Finish469-65#25989#26054
TOTALS1056782+274
📊

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