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BOSTON MARATHON 2025

Nicholas Iwicki

Bib: 27602•M

FL

0:00
0:00
/ mi
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Division (M18-39)
#0 / 5642
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
28:36
Rank: #23248
Start → 5K
28:36 | 9:12/mi
10K· 6.21 mi
57:16
Rank: #23261 (-13)
5K → 10K
28:40 | 9:14/mi
15K· 9.32 mi
1:25:34
Rank: #23014 (+247)
10K → 15K
28:18 | 9:07/mi
20K· 12.43 mi
1:54:53
Rank: #22965 (+49)
15K → 20K
29:19 | 9:26/mi
Half· 13.11 mi
2:00:58
Rank: #22878 (+87)
20K → Half
6:05 | 8:55/mi
25K· 15.53 mi
2:25:26
Rank: #22992 (-114)
Half → 25K
24:28 | 10:05/mi
30K· 18.64 mi
2:58:35
Rank: #23037 (-45)
25K → 30K
33:09 | 10:40/mi
20M
3:13:39
Rank: #23104 (-67)
30K → 20M
15:04 | 11:05/mi
21M
3:26:35
Rank: #23257 (-153)
20M → 21M
12:56 | 12:56/mi
35K· 21.75 mi
3:35:39
Rank: #23391 (-134)
21M → 35K
9:04 | 12:07/mi
23M
3:53:05
Rank: #23835 (-444)
35K → 23M
17:26 | 13:55/mi
24M
4:05:46
Rank: #24017 (-182)
23M → 24M
12:41 | 12:41/mi
40K· 24.85 mi
4:16:46
Rank: #24160 (-143)
24M → 40K
11:00 | 12:52/mi
25.2M
4:21:29
Rank: #24200 (-40)
40K → 25.2M
4:43 | 13:41/mi
Finish· 26.22 mi
4:32:06
Rank: #24198 (+2)
25.2M → Finish
10:37 | 10:25/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:00:58
Pace9:14 /mi
2nd Half
Distance13.11 mi
Time2:31:08
Pace11:32 /mi
📊Positive Split: 24.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:44:4428:369:1228:36
9:12
-
10K
6.21 mi12:13:2457:169:1328:40
9:14
+0:02
15K
9.32 mi12:41:421:25:349:1128:18
9:07
-0:07
20K
12.43 mi13:11:011:54:539:1529:19
9:26
+0:19
Half
13.11 mi13:17:062:00:589:146:05
8:55
-0:31
25K
15.53 mi13:41:342:25:269:2224:28
10:05
+1:10
30K
18.64 mi14:14:432:58:359:3533:09
10:40
+0:35
20M
20.00 mi14:29:473:13:399:4115:04
11:05
+0:25
21M
21.00 mi14:42:433:26:359:5012:56
12:56
+1:51
35K
21.75 mi14:51:473:35:399:559:04
12:07
-0:49
23M
23.00 mi15:09:133:53:0510:0817:26
13:55
+1:48
24M
24.00 mi15:21:544:05:4610:1412:41
12:41
-1:14
40K
24.85 mi15:32:544:16:4610:2011:00
12:52
+0:11
25.2M
25.20 mi15:37:374:21:2910:234:43
13:41
+0:49
Finish
26.22 mi15:48:144:32:0610:2310:37
10:25
-3:16

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

8:55 /mi

Average Pace

10:23 /mi

Slowest Pace

13:55 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:00:58

44% of race

Time at Steady Pace

1:23:18

31% of race

Time at Slower Pace

1:07:50

25% of race

Average Pace: 10:23 /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 mi11:44:4428:369:1228:36
9:12
#23248
10K
6.21 mi12:13:2457:169:1328:40
9:14
#23261
15K
9.32 mi12:41:421:25:349:1128:18
9:07
#23014
20K
12.43 mi13:11:011:54:539:1529:19
9:26
#22965
Half
13.11 mi13:17:062:00:589:146:05
8:55
#22878
25K
15.53 mi13:41:342:25:269:2224:28
10:05
#22992
30K
18.64 mi14:14:432:58:359:3533:09
10:40
#23037
20M
20.00 mi14:29:473:13:399:4115:04
11:05
#23104
21M
21.00 mi14:42:433:26:359:5012:56
12:56
#23257
35K
21.75 mi14:51:473:35:399:559:04
12:07
#23391
23M
23.00 mi15:09:133:53:0510:0817:26
13:55
#23835
24M
24.00 mi15:21:544:05:4610:1412:41
12:41
#24017
40K
24.85 mi15:32:544:16:4610:2011:00
12:52
#24160
25.2M
25.20 mi15:37:374:21:2910:234:43
13:41
#24200
Finish
26.22 mi15:48:144:32:0610:2310:37
10:25
#24198
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi23248138841388422491(Top 79%)13606(Top 84%)13606(Top 241%)
10K6.21 mi3.10 mi23261-1313903-1913903-1923296(Top 82%)13942(Top 87%)13942(Top 247%)
15K9.32 mi3.11 mi23014+24713819+8413819+8422491(Top 79%)13606(Top 84%)13606(Top 241%)
20K12.43 mi3.11 mi22965+4913796+2313796+2322697(Top 80%)13662(Top 85%)13662(Top 242%)
Half13.11 mi0.68 mi22878+8713760+3613760+3621472(Top 76%)13128(Top 82%)13128(Top 233%)
25K15.53 mi2.42 mi22992-11413789-2913789-2923482(Top 83%)13951(Top 87%)13951(Top 247%)
30K18.64 mi3.11 mi23037-4513765+2413765+2423319(Top 82%)13755(Top 85%)13755(Top 244%)
20M20.00 mi1.36 mi23104-6713774-913774-923772(Top 84%)13879(Top 86%)13879(Top 246%)
21M21.00 mi1.00 mi23257-15313830-5613830-5624965(Top 88%)14350(Top 89%)14350(Top 254%)
35K21.75 mi0.75 mi23391-13413876-4613876-4626024(Top 92%)14846(Top 92%)14846(Top 263%)
23M23.00 mi1.25 mi23835-44414064-18814064-18827250(Top 96%)15449(Top 96%)15449(Top 274%)
24M24.00 mi1.00 mi24017-18214138-7414138-7426519(Top 93%)15072(Top 94%)15072(Top 267%)
40K24.85 mi0.85 mi24160-14314188-5014188-5026151(Top 92%)14863(Top 92%)14863(Top 263%)
25.2M25.20 mi0.35 mi24200-4014204-1614204-1625901(Top 91%)14700(Top 91%)14700(Top 261%)
Finish26.22 mi1.02 mi24198+214196+814196+824089(Top 85%)13811(Top 86%)13811(Top 245%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 79%
×21stories
+97ft-345ft

Overall

22491

Males

13606

M18-39

13606

5K→10K

3.1 - 6.2 mi

Top 82%
×5stories
+79ft-138ft

Overall

23296

Males

13942

M18-39

13942

10K→15K

6.2 - 9.3 mi

Top 79%
×3stories
+67ft-78ft

Overall

22491

Males

13606

M18-39

13606

15K→20K

9.3 - 12.4 mi

Top 80%
×5stories
+106ft-86ft

Overall

22697

Males

13662

M18-39

13662

20K→Half

12.4 - 13.1 mi

Top 76%
×2stories
+19ft-37ft

Overall

21472

Males

13128

M18-39

13128

Half→25K

13.1 - 15.5 mi

Top 83%
×4stories
+66ft-88ft

Overall

23482

Males

13951

M18-39

13951

25K→30K

15.5 - 18.6 mi

Top 82%
×9stories
+181ft-148ft

Overall

23319

Males

13755

M18-39

13755

30K→20M

18.6 - 20.0 mi

Top 84%
×5stories
+64ft-50ft

Overall

23772

Males

13879

M18-39

13879

20M→21M

20.0 - 21.0 mi

Top 88%
×8stories
+106ft-24ft

Overall

24965

Males

14350

M18-39

14350

21M→35K

21.0 - 21.8 mi

Top 92%
×7stories
+17ft-86ft

Overall

26024

Males

14846

M18-39

14846

35K→23M

21.8 - 23.0 mi

Top 96%
×5stories
+23ft-63ft

Overall

27250

Males

15449

M18-39

15449

23M→24M

23.0 - 24.0 mi

Top 93%
×6stories
+12ft-82ft

Overall

26519

Males

15072

M18-39

15072

24M→40K

24.0 - 24.9 mi

Top 92%
×1story
+6ft-20ft

Overall

26151

Males

14863

M18-39

14863

40K→25.2M

24.9 - 25.2 mi

Top 91%
×1story
+13ft-16ft

Overall

25901

Males

14700

M18-39

14700

25.2M→Finish

25.2 - 26.2 mi

Top 85%
×2stories
+22ft-21ft

Overall

24089

Males

13811

M18-39

13811

Passing Analysis

Category:
Athletes Passed
1264
Passed By
2214
Net Change
-950
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#23248
5K → 10K220233-13#23248#23261
10K → 15K32275+247#23261#23014
15K → 20K200151+49#23014#22965
20K → Half892+87#22965#22878
Half → 25K103217-114#22878#22992
25K → 30K147192-45#22992#23037
30K → 20M57124-67#23037#23104
20M → 21M30183-153#23104#23257
21M → 35K18152-134#23257#23391
35K → 23M17461-444#23391#23835
23M → 24M8190-182#23835#24017
24M → 40K11154-143#24017#24160
40K → 25.2M646-40#24160#24200
25.2M → Finish3634+2#24200#24198
TOTALS12642214-950
📊

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