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BOSTON MARATHON 2025

Marcin Mikolajczak

Bib: 4194•M

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 10%
Gender (Male)
#0 / 16105
Top 17%
Division (M18-39)
#0 / 5642
Top 39%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:17
Rank: #4029
Start → 5K
20:17 | 6:32/mi
10K· 6.21 mi
40:37
Rank: #4021 (+8)
5K → 10K
20:20 | 6:33/mi
15K· 9.32 mi
1:01:05
Rank: #4048 (-27)
10K → 15K
20:28 | 6:35/mi
20K· 12.43 mi
1:21:30
Rank: #3863 (+185)
15K → 20K
20:25 | 6:34/mi
Half· 13.11 mi
1:25:58
Rank: #3866 (-3)
20K → Half
4:28 | 6:33/mi
25K· 15.53 mi
1:41:47
Rank: #3707 (+159)
Half → 25K
15:49 | 6:31/mi
30K· 18.64 mi
2:02:39
Rank: #3524 (+183)
25K → 30K
20:52 | 6:43/mi
20M
2:11:47
Rank: #3401 (+123)
30K → 20M
9:08 | 6:43/mi
21M
2:18:51
Rank: #3313 (+88)
20M → 21M
7:04 | 7:04/mi
35K· 21.75 mi
2:23:47
Rank: #3268 (+45)
21M → 35K
4:56 | 6:36/mi
23M
2:32:12
Rank: #3150 (+118)
35K → 23M
8:25 | 6:43/mi
24M
2:38:52
Rank: #3093 (+57)
23M → 24M
6:40 | 6:40/mi
40K· 24.85 mi
2:44:35
Rank: #3022 (+71)
24M → 40K
5:43 | 6:41/mi
25.2M
2:47:05
Rank: #2988 (+34)
40K → 25.2M
2:30 | 7:15/mi
Finish· 26.22 mi
2:53:35
Rank: #2921 (+67)
25.2M → Finish
6:30 | 6:23/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:25:58
Pace6:33 /mi
2nd Half
Distance13.11 mi
Time1:27:37
Pace6:41 /mi
📊Positive Split: 1.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:22:3720:176:3220:17
6:32
-
10K
6.21 mi10:42:5740:376:3220:20
6:33
+0:01
15K
9.32 mi11:03:251:01:056:3320:28
6:35
+0:02
20K
12.43 mi11:23:501:21:306:3320:25
6:34
-0:01
Half
13.11 mi11:28:181:25:586:334:28
6:33
-0:01
25K
15.53 mi11:44:071:41:476:3315:49
6:31
-0:02
30K
18.64 mi12:04:592:02:396:3520:52
6:43
+0:12
20M
20.00 mi12:14:072:11:476:359:08
6:43
0:00
21M
21.00 mi12:21:112:18:516:377:04
7:04
+0:21
35K
21.75 mi12:26:072:23:476:374:56
6:36
-0:28
23M
23.00 mi12:34:322:32:126:378:25
6:43
+0:07
24M
24.00 mi12:41:122:38:526:376:40
6:40
-0:03
40K
24.85 mi12:46:552:44:356:375:43
6:41
+0:01
25.2M
25.20 mi12:49:252:47:056:382:30
7:15
+0:34
Finish
26.22 mi12:55:552:53:356:386:30
6:23
-0:52

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

6:23 /mi

Average Pace

6:38 /mi

Slowest Pace

7:15 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:44:01

94% of race

Time at Steady Pace

9:34

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:37 /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 mi10:22:3720:176:3220:17
6:32
#4029
10K
6.21 mi10:42:5740:376:3220:20
6:33
#4021
15K
9.32 mi11:03:251:01:056:3320:28
6:35
#4048
20K
12.43 mi11:23:501:21:306:3320:25
6:34
#3863
Half
13.11 mi11:28:181:25:586:334:28
6:33
#3866
25K
15.53 mi11:44:071:41:476:3315:49
6:31
#3707
30K
18.64 mi12:04:592:02:396:3520:52
6:43
#3524
20M
20.00 mi12:14:072:11:476:359:08
6:43
#3401
21M
21.00 mi12:21:112:18:516:377:04
7:04
#3313
35K
21.75 mi12:26:072:23:476:374:56
6:36
#3268
23M
23.00 mi12:34:322:32:126:378:25
6:43
#3150
24M
24.00 mi12:41:122:38:526:376:40
6:40
#3093
40K
24.85 mi12:46:552:44:356:375:43
6:41
#3022
25.2M
25.20 mi12:49:252:47:056:382:30
7:15
#2988
Finish
26.22 mi12:55:552:53:356:386:30
6:23
#2921
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi4029379937994114(Top 14%)3869(Top 24%)3869(Top 69%)
10K6.21 mi3.10 mi4021+83795+43795+44024(Top 14%)3785(Top 24%)3785(Top 67%)
15K9.32 mi3.11 mi4048-273817-223817-224114(Top 14%)3869(Top 24%)3869(Top 69%)
20K12.43 mi3.11 mi3863+1853640+1773640+1773522(Top 12%)3332(Top 21%)3332(Top 59%)
Half13.11 mi0.68 mi3866-33643-33643-33931(Top 14%)3695(Top 23%)3695(Top 65%)
25K15.53 mi2.42 mi3707+1593500+1433500+1433005(Top 11%)2855(Top 18%)2855(Top 51%)
30K18.64 mi3.11 mi3524+1833331+1693331+1692959(Top 10%)2786(Top 17%)2786(Top 49%)
20M20.00 mi1.36 mi3401+1233215+1163215+1162544(Top 9%)2392(Top 15%)2392(Top 42%)
21M21.00 mi1.00 mi3313+883133+823133+822521(Top 9%)2347(Top 15%)2347(Top 42%)
35K21.75 mi0.75 mi3268+453085+483085+482897(Top 10%)2669(Top 17%)2669(Top 47%)
23M23.00 mi1.25 mi3150+1182976+1092976+1092335(Top 8%)2173(Top 13%)2173(Top 39%)
24M24.00 mi1.00 mi3093+572920+562920+562767(Top 10%)2534(Top 16%)2534(Top 45%)
40K24.85 mi0.85 mi3022+712852+682852+682295(Top 8%)2100(Top 13%)2100(Top 37%)
25.2M25.20 mi0.35 mi2988+342821+312821+312313(Top 8%)2066(Top 13%)2066(Top 37%)
Finish26.22 mi1.02 mi2921+672758+632758+632198(Top 8%)2011(Top 12%)2011(Top 36%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 14%
×21stories
+97ft-345ft

Overall

4114

Males

3869

M18-39

3869

5K→10K

3.1 - 6.2 mi

Top 14%
×5stories
+79ft-138ft

Overall

4024

Males

3785

M18-39

3785

10K→15K

6.2 - 9.3 mi

Top 14%
×3stories
+67ft-78ft

Overall

4114

Males

3869

M18-39

3869

15K→20K

9.3 - 12.4 mi

Top 12%
×5stories
+106ft-86ft

Overall

3522

Males

3332

M18-39

3332

20K→Half

12.4 - 13.1 mi

Top 14%
×2stories
+19ft-37ft

Overall

3931

Males

3695

M18-39

3695

Half→25K

13.1 - 15.5 mi

Top 11%
×4stories
+66ft-88ft

Overall

3005

Males

2855

M18-39

2855

25K→30K

15.5 - 18.6 mi

Top 10%
×9stories
+181ft-148ft

Overall

2959

Males

2786

M18-39

2786

30K→20M

18.6 - 20.0 mi

Top 9%
×5stories
+64ft-50ft

Overall

2544

Males

2392

M18-39

2392

20M→21M

20.0 - 21.0 mi

Top 9%
×8stories
+106ft-24ft

Overall

2521

Males

2347

M18-39

2347

21M→35K

21.0 - 21.8 mi

Top 10%
×7stories
+17ft-86ft

Overall

2897

Males

2669

M18-39

2669

35K→23M

21.8 - 23.0 mi

Top 8%
×5stories
+23ft-63ft

Overall

2335

Males

2173

M18-39

2173

23M→24M

23.0 - 24.0 mi

Top 10%
×6stories
+12ft-82ft

Overall

2767

Males

2534

M18-39

2534

24M→40K

24.0 - 24.9 mi

Top 8%
×1story
+6ft-20ft

Overall

2295

Males

2100

M18-39

2100

40K→25.2M

24.9 - 25.2 mi

Top 8%
×1story
+13ft-16ft

Overall

2313

Males

2066

M18-39

2066

25.2M→Finish

25.2 - 26.2 mi

Top 8%
×2stories
+22ft-21ft

Overall

2198

Males

2011

M18-39

2011

Passing Analysis

Category:
Athletes Passed
1523
Passed By
415
Net Change
+1108
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4029
5K → 10K168160+8#4029#4021
10K → 15K73100-27#4021#4048
15K → 20K20520+185#4048#3863
20K → Half1114-3#3863#3866
Half → 25K16910+159#3866#3707
25K → 30K20825+183#3707#3524
30K → 20M13613+123#3524#3401
20M → 21M10012+88#3401#3313
21M → 35K6015+45#3313#3268
35K → 23M12911+118#3268#3150
23M → 24M7316+57#3150#3093
24M → 40K776+71#3093#3022
40K → 25.2M406+34#3022#2988
25.2M → Finish747+67#2988#2921
TOTALS1523415+1108
📊

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