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BOSTON MARATHON 2025

Michal Czarcinski

Bib: 10337•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 35%
Gender (Male)
#0 / 16105
Top 48%
Masters (Masters Men)
#0 / 10463
Top 37%
Division (M50-54)
#0 / 1996
Top 38%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:03
Rank: #8609
Start → 5K
22:03 | 7:06/mi
10K· 6.21 mi
44:38
Rank: #9303 (-694)
5K → 10K
22:35 | 7:16/mi
15K· 9.32 mi
1:07:08
Rank: #9361 (-58)
10K → 15K
22:30 | 7:15/mi
20K· 12.43 mi
1:29:55
Rank: #9303 (+58)
15K → 20K
22:47 | 7:20/mi
Half· 13.11 mi
1:34:49
Rank: #9277 (+26)
20K → Half
4:54 | 7:11/mi
25K· 15.53 mi
1:52:53
Rank: #9282 (-5)
Half → 25K
18:04 | 7:27/mi
30K· 18.64 mi
2:17:36
Rank: #9538 (-256)
25K → 30K
24:43 | 7:57/mi
20M
2:28:37
Rank: #9641 (-103)
30K → 20M
11:01 | 8:06/mi
21M
2:37:08
Rank: #9662 (-21)
20M → 21M
8:31 | 8:31/mi
35K· 21.75 mi
2:43:10
Rank: #9747 (-85)
21M → 35K
6:02 | 8:04/mi
23M
2:53:25
Rank: #9845 (-98)
35K → 23M
10:15 | 8:11/mi
24M
3:01:33
Rank: #9919 (-74)
23M → 24M
8:08 | 8:08/mi
40K· 24.85 mi
3:08:36
Rank: #9983 (-64)
24M → 40K
7:03 | 8:15/mi
25.2M
3:11:39
Rank: #9969 (+14)
40K → 25.2M
3:03 | 8:51/mi
Finish· 26.22 mi
3:19:39
Rank: #10038 (-69)
25.2M → Finish
8:00 | 7:51/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:34:49
Pace7:14 /mi
2nd Half
Distance13.11 mi
Time1:44:50
Pace8:00 /mi
📊Positive Split: 10.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:47:3822:037:0622:03
7:06
-
10K
6.21 mi11:10:1344:387:1122:35
7:16
+0:10
15K
9.32 mi11:32:431:07:087:1222:30
7:15
-0:01
20K
12.43 mi11:55:301:29:557:1422:47
7:20
+0:05
Half
13.11 mi12:00:241:34:497:144:54
7:11
-0:09
25K
15.53 mi12:18:281:52:537:1618:04
7:27
+0:16
30K
18.64 mi12:43:112:17:367:2324:43
7:57
+0:30
20M
20.00 mi12:54:122:28:377:2611:01
8:06
+0:09
21M
21.00 mi13:02:432:37:087:298:31
8:31
+0:25
35K
21.75 mi13:08:452:43:107:306:02
8:04
-0:27
23M
23.00 mi13:19:002:53:257:3210:15
8:11
+0:07
24M
24.00 mi13:27:083:01:337:348:08
8:08
-0:03
40K
24.85 mi13:34:113:08:367:357:03
8:15
+0:07
25.2M
25.20 mi13:37:143:11:397:363:03
8:51
+0:36
Finish
26.22 mi13:45:143:19:397:378:00
7:51
-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

7:06 /mi

Average Pace

7:37 /mi

Slowest Pace

8:51 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:52:53

57% of race

Time at Steady Pace

1:08:09

34% of race

Time at Slower Pace

18:37

9% of race

Average Pace: 7:37 /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 mi10:47:3822:037:0622:03
7:06
#8609
10K
6.21 mi11:10:1344:387:1122:35
7:16
#9303
15K
9.32 mi11:32:431:07:087:1222:30
7:15
#9361
20K
12.43 mi11:55:301:29:557:1422:47
7:20
#9303
Half
13.11 mi12:00:241:34:497:144:54
7:11
#9277
25K
15.53 mi12:18:281:52:537:1618:04
7:27
#9282
30K
18.64 mi12:43:112:17:367:2324:43
7:57
#9538
20M
20.00 mi12:54:122:28:377:2611:01
8:06
#9641
21M
21.00 mi13:02:432:37:087:298:31
8:31
#9662
35K
21.75 mi13:08:452:43:107:306:02
8:04
#9747
23M
23.00 mi13:19:002:53:257:3210:15
8:11
#9845
24M
24.00 mi13:27:083:01:337:348:08
8:08
#9919
40K
24.85 mi13:34:113:08:367:357:03
8:15
#9983
25.2M
25.20 mi13:37:143:11:397:363:03
8:51
#9969
Finish
26.22 mi13:45:143:19:397:378:00
7:51
#10038
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi8609738673869476(Top 33%)7810(Top 48%)7810(Top 391%)
10K6.21 mi3.10 mi9303-6947776-3907776-39010079(Top 35%)8189(Top 51%)8189(Top 410%)
15K9.32 mi3.11 mi9361-587795-197795-199476(Top 33%)7810(Top 48%)7810(Top 391%)
20K12.43 mi3.11 mi9303+587734+617734+619306(Top 33%)7633(Top 47%)7633(Top 382%)
Half13.11 mi0.68 mi9277+267712+227712+228920(Top 31%)7442(Top 46%)7442(Top 373%)
25K15.53 mi2.42 mi9282-57681+317681+319550(Top 34%)7626(Top 47%)7626(Top 382%)
30K18.64 mi3.11 mi9538-2567767-867767-8611054(Top 39%)8209(Top 51%)8209(Top 411%)
20M20.00 mi1.36 mi9641-1037786-197786-1911125(Top 39%)8087(Top 50%)8087(Top 405%)
21M21.00 mi1.00 mi9662-217771+157771+1510552(Top 37%)7641(Top 47%)7641(Top 383%)
35K21.75 mi0.75 mi9747-857793-227793-2212643(Top 45%)8629(Top 54%)8629(Top 432%)
23M23.00 mi1.25 mi9845-987786+77786+711261(Top 40%)7873(Top 49%)7873(Top 394%)
24M24.00 mi1.00 mi9919-747792-67792-612108(Top 43%)8214(Top 51%)8214(Top 412%)
40K24.85 mi0.85 mi9983-647792779211807(Top 42%)7958(Top 49%)7958(Top 399%)
25.2M25.20 mi0.35 mi9969+147770+227770+2210848(Top 38%)7401(Top 46%)7401(Top 371%)
Finish26.22 mi1.02 mi10038-697772-27772-211781(Top 41%)7919(Top 49%)7919(Top 397%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 33%
×21stories
+97ft-345ft

Overall

9476

Males

7810

M50-54

7810

5K→10K

3.1 - 6.2 mi

Top 35%
×5stories
+79ft-138ft

Overall

10079

Males

8189

M50-54

8189

10K→15K

6.2 - 9.3 mi

Top 33%
×3stories
+67ft-78ft

Overall

9476

Males

7810

M50-54

7810

15K→20K

9.3 - 12.4 mi

Top 33%
×5stories
+106ft-86ft

Overall

9306

Males

7633

M50-54

7633

20K→Half

12.4 - 13.1 mi

Top 31%
×2stories
+19ft-37ft

Overall

8920

Males

7442

M50-54

7442

Half→25K

13.1 - 15.5 mi

Top 34%
×4stories
+66ft-88ft

Overall

9550

Males

7626

M50-54

7626

25K→30K

15.5 - 18.6 mi

Top 39%
×9stories
+181ft-148ft

Overall

11054

Males

8209

M50-54

8209

30K→20M

18.6 - 20.0 mi

Top 39%
×5stories
+64ft-50ft

Overall

11125

Males

8087

M50-54

8087

20M→21M

20.0 - 21.0 mi

Top 37%
×8stories
+106ft-24ft

Overall

10552

Males

7641

M50-54

7641

21M→35K

21.0 - 21.8 mi

Top 45%
×7stories
+17ft-86ft

Overall

12643

Males

8629

M50-54

8629

35K→23M

21.8 - 23.0 mi

Top 40%
×5stories
+23ft-63ft

Overall

11261

Males

7873

M50-54

7873

23M→24M

23.0 - 24.0 mi

Top 43%
×6stories
+12ft-82ft

Overall

12108

Males

8214

M50-54

8214

24M→40K

24.0 - 24.9 mi

Top 42%
×1story
+6ft-20ft

Overall

11807

Males

7958

M50-54

7958

40K→25.2M

24.9 - 25.2 mi

Top 38%
×1story
+13ft-16ft

Overall

10848

Males

7401

M50-54

7401

25.2M→Finish

25.2 - 26.2 mi

Top 41%
×2stories
+22ft-21ft

Overall

11781

Males

7919

M50-54

7919

Passing Analysis

Category:
Athletes Passed
1241
Passed By
2666
Net Change
-1429
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8609
5K → 10K46740-694#8609#9303
10K → 15K130188-58#9303#9361
15K → 20K212154+58#9361#9303
20K → Half4115+26#9303#9277
Half → 25K162167-5#9277#9282
25K → 30K150406-256#9282#9538
30K → 20M77179-103#9538#9641
20M → 21M87108-21#9641#9662
21M → 35K44129-85#9662#9747
35K → 23M79177-98#9747#9845
23M → 24M63137-74#9845#9919
24M → 40K57120-64#9919#9983
40K → 25.2M4127+14#9983#9969
25.2M → Finish52119-69#9969#10038
TOTALS12412666-1429
📊

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