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BOSTON MARATHON 2025

Andrew Bialecki

Bib: 27648•M

MA

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 19%
Gender (Male)
#0 / 16105
Top 30%
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
20:45
Rank: #5239
Start → 5K
20:45 | 6:41/mi
10K· 6.21 mi
41:31
Rank: #5191 (+48)
5K → 10K
20:46 | 6:41/mi
15K· 9.32 mi
1:02:38
Rank: #5432 (-241)
10K → 15K
21:07 | 6:48/mi
20K· 12.43 mi
1:23:48
Rank: #5406 (+26)
15K → 20K
21:10 | 6:49/mi
Half· 13.11 mi
1:28:18
Rank: #5321 (+85)
20K → Half
4:30 | 6:36/mi
25K· 15.53 mi
1:44:54
Rank: #5292 (+29)
Half → 25K
16:36 | 6:51/mi
30K· 18.64 mi
2:07:12
Rank: #5356 (-64)
25K → 30K
22:18 | 7:11/mi
20M
2:17:03
Rank: #5379 (-23)
30K → 20M
9:51 | 7:15/mi
21M
2:24:40
Rank: #5344 (+35)
20M → 21M
7:37 | 7:37/mi
35K· 21.75 mi
2:30:06
Rank: #5387 (-43)
21M → 35K
5:26 | 7:16/mi
23M
2:39:20
Rank: #5370 (+17)
35K → 23M
9:14 | 7:22/mi
24M
2:46:35
Rank: #5355 (+15)
23M → 24M
7:15 | 7:15/mi
40K· 24.85 mi
2:52:53
Rank: #5324 (+31)
24M → 40K
6:18 | 7:22/mi
25.2M
2:55:42
Rank: #5317 (+7)
40K → 25.2M
2:49 | 8:10/mi
Finish· 26.22 mi
3:03:00
Rank: #5316 (+1)
25.2M → Finish
7:18 | 7:10/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:28:18
Pace6:44 /mi
2nd Half
Distance13.11 mi
Time1:34:42
Pace7:13 /mi
📊Positive Split: 7.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:36:3020:456:4120:45
6:41
-
10K
6.21 mi11:57:1641:316:4120:46
6:41
0:00
15K
9.32 mi12:18:231:02:386:4321:07
6:48
+0:07
20K
12.43 mi12:39:331:23:486:4521:10
6:49
+0:01
Half
13.11 mi12:44:031:28:186:444:30
6:36
-0:13
25K
15.53 mi13:00:391:44:546:4516:36
6:51
+0:15
30K
18.64 mi13:22:572:07:126:4922:18
7:11
+0:20
20M
20.00 mi13:32:482:17:036:519:51
7:15
+0:04
21M
21.00 mi13:40:252:24:406:537:37
7:37
+0:22
35K
21.75 mi13:45:512:30:066:545:26
7:16
-0:21
23M
23.00 mi13:55:052:39:206:569:14
7:22
+0:06
24M
24.00 mi14:02:202:46:356:567:15
7:15
-0:07
40K
24.85 mi14:08:382:52:536:576:18
7:22
+0:07
25.2M
25.20 mi14:11:272:55:426:582:49
8:10
+0:48
Finish
26.22 mi14:18:453:03:006:597:18
7:10
-1:00

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

6:36 /mi

Average Pace

6:59 /mi

Slowest Pace

8:10 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:44:54

57% of race

Time at Steady Pace

1:07:40

37% of race

Time at Slower Pace

10:26

6% of race

Average Pace: 6:59 /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 mi11:36:3020:456:4120:45
6:41
#5239
10K
6.21 mi11:57:1641:316:4120:46
6:41
#5191
15K
9.32 mi12:18:231:02:386:4321:07
6:48
#5432
20K
12.43 mi12:39:331:23:486:4521:10
6:49
#5406
Half
13.11 mi12:44:031:28:186:444:30
6:36
#5321
25K
15.53 mi13:00:391:44:546:4516:36
6:51
#5292
30K
18.64 mi13:22:572:07:126:4922:18
7:11
#5356
20M
20.00 mi13:32:482:17:036:519:51
7:15
#5379
21M
21.00 mi13:40:252:24:406:537:37
7:37
#5344
35K
21.75 mi13:45:512:30:066:545:26
7:16
#5387
23M
23.00 mi13:55:052:39:206:569:14
7:22
#5370
24M
24.00 mi14:02:202:46:356:567:15
7:15
#5355
40K
24.85 mi14:08:382:52:536:576:18
7:22
#5324
25.2M
25.20 mi14:11:272:55:426:582:49
8:10
#5317
Finish
26.22 mi14:18:453:03:006:597:18
7:10
#5316
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi5239487648766031(Top 21%)5481(Top 34%)5481(Top 97%)
10K6.21 mi3.10 mi5191+484827+494827+495177(Top 18%)4807(Top 30%)4807(Top 85%)
15K9.32 mi3.11 mi5432-2415024-1975024-1976031(Top 21%)5481(Top 34%)5481(Top 97%)
20K12.43 mi3.11 mi5406+264995+294995+295396(Top 19%)4943(Top 31%)4943(Top 88%)
Half13.11 mi0.68 mi5321+854923+724923+724266(Top 15%)3988(Top 25%)3988(Top 71%)
25K15.53 mi2.42 mi5292+294883+404883+405219(Top 18%)4781(Top 30%)4781(Top 85%)
30K18.64 mi3.11 mi5356-644915-324915-325766(Top 20%)5138(Top 32%)5138(Top 91%)
20M20.00 mi1.36 mi5379-234925-104925-105453(Top 19%)4803(Top 30%)4803(Top 85%)
21M21.00 mi1.00 mi5344+354886+394886+395167(Top 18%)4488(Top 28%)4488(Top 80%)
35K21.75 mi0.75 mi5387-434918-324918-326922(Top 24%)5633(Top 35%)5633(Top 100%)
23M23.00 mi1.25 mi5370+174892+264892+265858(Top 21%)4873(Top 30%)4873(Top 86%)
24M24.00 mi1.00 mi5355+154870+224870+226072(Top 21%)4950(Top 31%)4950(Top 88%)
40K24.85 mi0.85 mi5324+314831+394831+395968(Top 21%)4815(Top 30%)4815(Top 85%)
25.2M25.20 mi0.35 mi5317+74818+134818+136735(Top 24%)5154(Top 32%)5154(Top 91%)
Finish26.22 mi1.02 mi5316+14801+174801+176749(Top 24%)5159(Top 32%)5159(Top 91%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 21%
×21stories
+97ft-345ft

Overall

6031

Males

5481

M18-39

5481

5K→10K

3.1 - 6.2 mi

Top 18%
×5stories
+79ft-138ft

Overall

5177

Males

4807

M18-39

4807

10K→15K

6.2 - 9.3 mi

Top 21%
×3stories
+67ft-78ft

Overall

6031

Males

5481

M18-39

5481

15K→20K

9.3 - 12.4 mi

Top 19%
×5stories
+106ft-86ft

Overall

5396

Males

4943

M18-39

4943

20K→Half

12.4 - 13.1 mi

Top 15%
×2stories
+19ft-37ft

Overall

4266

Males

3988

M18-39

3988

Half→25K

13.1 - 15.5 mi

Top 18%
×4stories
+66ft-88ft

Overall

5219

Males

4781

M18-39

4781

25K→30K

15.5 - 18.6 mi

Top 20%
×9stories
+181ft-148ft

Overall

5766

Males

5138

M18-39

5138

30K→20M

18.6 - 20.0 mi

Top 19%
×5stories
+64ft-50ft

Overall

5453

Males

4803

M18-39

4803

20M→21M

20.0 - 21.0 mi

Top 18%
×8stories
+106ft-24ft

Overall

5167

Males

4488

M18-39

4488

21M→35K

21.0 - 21.8 mi

Top 24%
×7stories
+17ft-86ft

Overall

6922

Males

5633

M18-39

5633

35K→23M

21.8 - 23.0 mi

Top 21%
×5stories
+23ft-63ft

Overall

5858

Males

4873

M18-39

4873

23M→24M

23.0 - 24.0 mi

Top 21%
×6stories
+12ft-82ft

Overall

6072

Males

4950

M18-39

4950

24M→40K

24.0 - 24.9 mi

Top 21%
×1story
+6ft-20ft

Overall

5968

Males

4815

M18-39

4815

40K→25.2M

24.9 - 25.2 mi

Top 24%
×1story
+13ft-16ft

Overall

6735

Males

5154

M18-39

5154

25.2M→Finish

25.2 - 26.2 mi

Top 24%
×2stories
+22ft-21ft

Overall

6749

Males

5159

M18-39

5159

Passing Analysis

Category:
Athletes Passed
1235
Passed By
1312
Net Change
-77
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5239
5K → 10K196148+48#5239#5191
10K → 15K53294-241#5191#5432
15K → 20K139113+26#5432#5406
20K → Half894+85#5406#5321
Half → 25K12899+29#5321#5292
25K → 30K148212-64#5292#5356
30K → 20M7295-23#5356#5379
20M → 21M9358+35#5379#5344
21M → 35K3376-43#5344#5387
35K → 23M9073+17#5387#5370
23M → 24M5843+15#5370#5355
24M → 40K6534+31#5355#5324
40K → 25.2M2316+7#5324#5317
25.2M → Finish4847+1#5317#5316
TOTALS12351312-77
📊

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