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BOSTON MARATHON 2025

Janos Kakuk

Bib: 14754•M

CA

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
7:40/mi
23:48
↑ 97↓ 3451.5%
10K· 6.21 mi
8:02/mi
48:45
↑ 79↓ 1380.4%
15K· 9.32 mi
8:18/mi
1:14:33
↑ 67↓ 78
20K· 12.43 mi
8:27/mi
1:40:49
↑ 106↓ 860.1%
Half· 13.11 mi
8:08/mi
1:46:22
↑ 19↓ 370.5%
25K· 15.53 mi
8:42/mi
2:07:27
↑ 66↓ 880.2%
30K· 18.64 mi
9:07/mi
2:35:45
↑ 181↓ 1480.2%
20M
9:02/mi
2:48:02
↑ 64↓ 500.2%
21M
10:07/mi
2:58:09
↑ 106↓ 241.6%
35K· 21.75 mi
8:57/mi
3:04:51
↑ 17↓ 861.7%
23M
9:41/mi
3:16:59
↑ 23↓ 630.6%
24M
9:46/mi
3:26:45
↓ 821.3%
40K· 24.85 mi
10:26/mi
3:35:40
↓ 200.3%
25.2M
10:38/mi
3:39:20
↑ 13↓ 160.2%
Finish· 26.22 mi
10:01/mi
3:49:32
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:46:22
Pace8:07 /mi
2nd Half
Distance13.11 mi
Time2:03:10
Pace9:24 /mi
📊Positive Split: 15.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:54:4523:487:4023:48
7:40
-
10K
6.21 mi11:19:4248:457:5124:57
8:02
+0:22
15K
9.32 mi11:45:301:14:338:0025:48
8:18
+0:16
20K
12.43 mi12:11:461:40:498:0726:16
8:27
+0:09
Half
13.11 mi12:17:191:46:228:075:33
8:08
-0:19
25K
15.53 mi12:38:242:07:278:1221:05
8:42
+0:34
30K
18.64 mi13:06:422:35:458:2128:18
9:07
+0:25
20M
20.00 mi13:18:592:48:028:2412:17
9:02
-0:05
21M
21.00 mi13:29:062:58:098:2910:07
10:07
+1:05
35K
21.75 mi13:35:483:04:518:306:42
8:57
-1:10
23M
23.00 mi13:47:563:16:598:3412:08
9:41
+0:44
24M
24.00 mi13:57:423:26:458:379:46
9:46
+0:05
40K
24.85 mi14:06:373:35:408:418:55
10:26
+0:40
25.2M
25.20 mi14:10:173:39:208:423:40
10:38
+0:12
Finish
26.22 mi14:20:293:49:328:4610:12
10:01
-0:37

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

7:40 /mi

Average Pace

8:46 /mi

Slowest Pace

10:38 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:46:22

46% of race

Time at Steady Pace

1:08:22

30% of race

Time at Slower Pace

54:48

24% of race

Average Pace: 8:45 /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 mi10:54:4523:487:4023:48
7:40
#13603
10K
6.21 mi11:19:4248:457:5124:57
8:02
#15201
15K
9.32 mi11:45:301:14:338:0025:48
8:18
#16312
20K
12.43 mi12:11:461:40:498:0726:16
8:27
#16773
Half
13.11 mi12:17:191:46:228:075:33
8:08
#16759
25K
15.53 mi12:38:242:07:278:1221:05
8:42
#16984
30K
18.64 mi13:06:422:35:458:2128:18
9:07
#17162
20M
20.00 mi13:18:592:48:028:2412:17
9:02
#17143
21M
21.00 mi13:29:062:58:098:2910:07
10:07
#17252
35K
21.75 mi13:35:483:04:518:306:42
8:57
#17277
23M
23.00 mi13:47:563:16:598:3412:08
9:41
#17434
24M
24.00 mi13:57:423:26:458:379:46
9:46
#17626
40K
24.85 mi14:06:373:35:408:418:55
10:26
#17869
25.2M
25.20 mi14:10:173:39:208:423:40
10:38
#17913
Finish
26.22 mi14:20:293:49:328:4610:12
10:01
#18213
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi136039911991118075(Top 64%)11659(Top 72%)11659(Top 584%)
10K6.21 mi3.10 mi15201-159810499-58810499-58816696(Top 59%)11110(Top 69%)11110(Top 557%)
15K9.32 mi3.11 mi16312-111110945-44610945-44618075(Top 64%)11659(Top 72%)11659(Top 584%)
20K12.43 mi3.11 mi16773-46111120-17511120-17517906(Top 63%)11566(Top 72%)11566(Top 579%)
Half13.11 mi0.68 mi16759+1411118+211118+216832(Top 59%)11127(Top 69%)11127(Top 557%)
25K15.53 mi2.42 mi16984-22511183-6511183-6518348(Top 65%)11674(Top 72%)11674(Top 585%)
30K18.64 mi3.11 mi17162-17811200-1711200-1718219(Top 64%)11470(Top 71%)11470(Top 575%)
20M20.00 mi1.36 mi17143+1911166+3411166+3417000(Top 60%)10826(Top 67%)10826(Top 542%)
21M21.00 mi1.00 mi17252-10911182-1611182-1618712(Top 66%)11476(Top 71%)11476(Top 575%)
35K21.75 mi0.75 mi17277-2511162+2011162+2017998(Top 63%)11051(Top 69%)11051(Top 554%)
23M23.00 mi1.25 mi17434-15711196-3411196-3419400(Top 68%)11620(Top 72%)11620(Top 582%)
24M24.00 mi1.00 mi17626-19211257-6111257-6120599(Top 73%)12156(Top 75%)12156(Top 609%)
40K24.85 mi0.85 mi17869-24311349-9211349-9221705(Top 76%)12603(Top 78%)12603(Top 631%)
25.2M25.20 mi0.35 mi17913-4411357-811357-819440(Top 68%)11514(Top 71%)11514(Top 577%)
Finish26.22 mi1.02 mi18213-30011477-12011477-12022950(Top 81%)13245(Top 82%)13245(Top 664%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 64%
×21story building
+97ft-345ft

Overall

18075

Males

11659

M50-54

11659

5K→10K

3.1 - 6.2 mi

Top 59%
×5story building
+79ft-138ft

Overall

16696

Males

11110

M50-54

11110

10K→15K

6.2 - 9.3 mi

Top 64%
×3story building
+67ft-78ft

Overall

18075

Males

11659

M50-54

11659

15K→20K

9.3 - 12.4 mi

Top 63%
×5story building
+106ft-86ft

Overall

17906

Males

11566

M50-54

11566

20K→Half

12.4 - 13.1 mi

Top 59%
×2story building
+19ft-37ft

Overall

16832

Males

11127

M50-54

11127

Half→25K

13.1 - 15.5 mi

Top 65%
×4story building
+66ft-88ft

Overall

18348

Males

11674

M50-54

11674

25K→30K

15.5 - 18.6 mi

Top 64%
×9story building
+181ft-148ft

Overall

18219

Males

11470

M50-54

11470

30K→20M

18.6 - 20.0 mi

Top 60%
×5story building
+64ft-50ft

Overall

17000

Males

10826

M50-54

10826

20M→21M

20.0 - 21.0 mi

Top 66%
×8story building
+106ft-24ft

Overall

18712

Males

11476

M50-54

11476

21M→35K

21.0 - 21.8 mi

Top 63%
×7story building
+17ft-86ft

Overall

17998

Males

11051

M50-54

11051

35K→23M

21.8 - 23.0 mi

Top 68%
×5story building
+23ft-63ft

Overall

19400

Males

11620

M50-54

11620

23M→24M

23.0 - 24.0 mi

Top 73%
×6story building
+12ft-82ft

Overall

20599

Males

12156

M50-54

12156

24M→40K

24.0 - 24.9 mi

Top 76%
×1story
+6ft-20ft

Overall

21705

Males

12603

M50-54

12603

40K→25.2M

24.9 - 25.2 mi

Top 68%
×1story
+13ft-16ft

Overall

19440

Males

11514

M50-54

11514

25.2M→Finish

25.2 - 26.2 mi

Top 81%
×2story building
+22ft-21ft

Overall

22950

Males

13245

M50-54

13245

Passing Analysis

Category:
Athletes Passed
865
Passed By
5475
Net Change
-4610
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13603
5K → 10K371635-1598#13603#15201
10K → 15K331144-1111#15201#16312
15K → 20K86547-461#16312#16773
20K → Half4632+14#16773#16759
Half → 25K89314-225#16759#16984
25K → 30K173351-178#16984#17162
30K → 20M10889+19#17162#17143
20M → 21M79188-109#17143#17252
21M → 35K6287-25#17252#17277
35K → 23M72229-157#17277#17434
23M → 24M33225-192#17434#17626
24M → 40K17260-243#17626#17869
40K → 25.2M1458-44#17869#17913
25.2M → Finish16316-300#17913#18213
TOTALS8655475-4610
📊

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