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BOSTON MARATHON 2025

Nikodem Iskra

Bib: 31594 M PL

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M45-49)
#0 / 2386
Race Day Weather
50°/40°F
broken clouds

Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
8:40/mi
26:55
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
8:17/mi
52:40
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
8:21/mi
1:18:38
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
8:37/mi
1:45:24
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
8:26/mi
1:51:09
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
8:40/mi
2:12:09
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
8:54/mi
2:39:49
↑ 181↓ 1480.2%
138 ft elev
20M
8:47/mi
2:51:45
↑ 64↓ 500.2%
148 ft elev
21M
9:09/mi
3:00:54
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
8:47/mi
3:07:28
↑ 17↓ 861.7%
156 ft elev
23M
8:53/mi
3:18:35
↑ 23↓ 630.6%
116 ft elev
24M
8:57/mi
3:27:32
↓ 821.3%
34 ft elev
40K· 24.85 mi
9:19/mi
3:35:30
↓ 200.3%
20 ft elev
25.2M
9:52/mi
3:38:54
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
7:52/mi
3:46:55
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

Half Splits

1st Half· via Half
1:51:098:29 /mi⚡ faster
2nd Half
1:55:468:50 /mi+4.2%
Positive split — 4.2% slower in the second half
Is this your race?

Your race, unpacked

See your splits, ranks & AI insights.

Checkpoint Splits

CheckpointTimeAvg PaceSegment LengthSegment TimeSegment PaceTrendDiff
5K
26:558:403.11 mi26:55
8:40
-
10K
52:408:293.10 mi25:45
8:17
-0:23
15K
1:18:388:263.11 mi25:58
8:21
+0:04
20K
1:45:248:293.11 mi26:46
8:37
+0:16
Half(13.11 mi)
1:51:098:290.68 mi5:45
8:26
-0:11
25K
2:12:098:302.42 mi21:00
8:40
+0:14
30K
2:39:498:343.11 mi27:40
8:54
+0:14
20M
2:51:458:351.36 mi11:56
8:47
-0:07
21M
3:00:548:371.00 mi9:09
9:09
+0:22
35K
3:07:288:370.75 mi6:34
8:47
-0:22
23M
3:18:358:381.25 mi11:07
8:53
+0:06
24M
3:27:328:391.00 mi8:57
8:57
+0:04
40K
3:35:308:400.85 mi7:58
9:19
+0:22
25.2M
3:38:548:410.35 mi3:24
9:52
+0:33
Finish(26.22 mi)
3:46:558:401.02 mi8:01
7:52
-2:00
Trend:
Faster pace
Steady pace
Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

7:52 /mi

Average Pace

8:40 /mi

Slowest Pace

9:52 /mi

Loading chart...
Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

1:05:29

29% of race

Time at Steady Pace

2:20:55

62% of race

Time at Slower Pace

20:31

9% of race

Average Pace: 8:39 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

Heatmap

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0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Checkpoint and Segment Rankings

CheckpointSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi208141277412774184211180211802
10K3.10 mi19678+113612330+44412330+444184571182911829
15K3.11 mi19261+41712164+16612164+166184211180211802
20K3.11 mi19153+10812105+5912105+59189281199911999
Half(13.11 mi)0.68 mi19118+3512087+1812087+18186891189811898
25K2.42 mi18936+18212001+8612001+86181431158811588
30K3.11 mi18593+34311826+17511826+175171721101111011
20M1.36 mi18348+24511685+14111685+141155511018710187
21M1.00 mi18093+25511554+13111554+1311434695019501
35K0.75 mi18058+3511524+3011524+30171101065810658
23M1.25 mi17879+17911400+12411400+1241555198799879
24M1.00 mi17814+6511332+6811332+68170951050310503
40K0.85 mi17826-1211327+511327+5179111077810778
25.2M0.35 mi17791+3511302+2511302+25163511006110061
Finish(26.22 mi)1.02 mi17570+22111177+12511177+1251193580168016

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 65%
×21story building
+97ft-345ft

Overall

18421

Males

11802

M45-49

11802

5K→10K

3.1 - 6.2 mi

Top 65%
×5story building
+79ft-138ft

Overall

18457

Males

11829

M45-49

11829

10K→15K

6.2 - 9.3 mi

Top 65%
×3story building
+67ft-78ft

Overall

18421

Males

11802

M45-49

11802

15K→20K

9.3 - 12.4 mi

Top 67%
×5story building
+106ft-86ft

Overall

18928

Males

11999

M45-49

11999

20K→Half

12.4 - 13.1 mi

Top 66%
×2story building
+19ft-37ft

Overall

18689

Males

11898

M45-49

11898

Half→25K

13.1 - 15.5 mi

Top 64%
×4story building
+66ft-88ft

Overall

18143

Males

11588

M45-49

11588

25K→30K

15.5 - 18.6 mi

Top 60%
×9story building
+181ft-148ft

Overall

17172

Males

11011

M45-49

11011

30K→20M

18.6 - 20.0 mi

Top 55%
×5story building
+64ft-50ft

Overall

15551

Males

10187

M45-49

10187

20M→21M

20.0 - 21.0 mi

Top 51%
×8story building
+106ft-24ft

Overall

14346

Males

9501

M45-49

9501

21M→35K

21.0 - 21.8 mi

Top 60%
×7story building
+17ft-86ft

Overall

17110

Males

10658

M45-49

10658

35K→23M

21.8 - 23.0 mi

Top 55%
×5story building
+23ft-63ft

Overall

15551

Males

9879

M45-49

9879

23M→24M

23.0 - 24.0 mi

Top 60%
×6story building
+12ft-82ft

Overall

17095

Males

10503

M45-49

10503

24M→40K

24.0 - 24.9 mi

Top 63%
×1story
+6ft-20ft

Overall

17911

Males

10778

M45-49

10778

40K→25.2M

24.9 - 25.2 mi

Top 58%
×1story
+13ft-16ft

Overall

16351

Males

10061

M45-49

10061

25.2M→Finish

25.2 - 26.2 mi

Top 42%
×2story building
+22ft-21ft

Overall

11935

Males

8016

M45-49

8016

Passing Analysis

Category:
▲Net Change
+0
0 passed by0 passed
SegmentMovementRank
Start → 5K-#20814
5K → 10K
301166+1136
#20814 → #19678
10K → 15K
58475+417
#19678 → #19261
15K → 20K
126234+108
#19261 → #19153
20K → Half
1954+35
#19153 → #19118
Half → 25K
68250+182
#19118 → #18936
25K → 30K
81424+343
#18936 → #18593
30K → 20M
14259+245
#18593 → #18348
20M → 21M
7262+255
#18348 → #18093
21M → 35K
3671+35
#18093 → #18058
35K → 23M
24203+179
#18058 → #17879
23M → 24M
46111+65
#17879 → #17814
24M → 40K
6452-12
#17814 → #17826
40K → 25.2M
1550+35
#17826 → #17791
25.2M → Finish
4225+221
#17791 → #17570
TOTALS
5923836+3244
#20814 → #17570

Passing Visualized

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