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BOSTON MARATHON 2025

Steve Czarnecki

Bib: 6873•M

MI

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 13%
Gender (Male)
#0 / 16105
Top 21%
Division (M18-39)
#0 / 5642
Top 45%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:11
Rank: #3813
Start → 5K
20:11 | 6:30/mi
10K· 6.21 mi
41:13
Rank: #4761 (-948)
5K → 10K
21:02 | 6:46/mi
15K· 9.32 mi
1:01:34
Rank: #4441 (+320)
10K → 15K
20:21 | 6:33/mi
20K· 12.43 mi
1:22:13
Rank: #4308 (+133)
15K → 20K
20:39 | 6:39/mi
Half· 13.11 mi
1:26:45
Rank: #4313 (-5)
20K → Half
4:32 | 6:39/mi
25K· 15.53 mi
1:42:59
Rank: #4215 (+98)
Half → 25K
16:14 | 6:42/mi
30K· 18.64 mi
2:04:21
Rank: #4090 (+125)
25K → 30K
21:22 | 6:53/mi
20M
2:13:53
Rank: #4069 (+21)
30K → 20M
9:32 | 7:01/mi
21M
2:20:53
Rank: #3911 (+158)
20M → 21M
7:00 | 7:01/mi
35K· 21.75 mi
2:25:52
Rank: #3864 (+47)
21M → 35K
4:59 | 6:40/mi
23M
2:34:29
Rank: #3787 (+77)
35K → 23M
8:37 | 6:53/mi
24M
2:41:22
Rank: #3774 (+13)
23M → 24M
6:53 | 6:53/mi
40K· 24.85 mi
2:47:29
Rank: #3792 (-18)
24M → 40K
6:07 | 7:09/mi
25.2M
2:49:57
Rank: #3743 (+49)
40K → 25.2M
2:28 | 7:09/mi
Finish· 26.22 mi
2:56:38
Rank: #3648 (+95)
25.2M → Finish
6:41 | 6:34/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:26:45
Pace6:37 /mi
2nd Half
Distance13.11 mi
Time1:29:53
Pace6:51 /mi
📊Positive Split: 3.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:26:1320:116:3020:11
6:30
-
10K
6.21 mi10:47:1541:136:3821:02
6:46
+0:16
15K
9.32 mi11:07:361:01:346:3620:21
6:33
-0:13
20K
12.43 mi11:28:151:22:136:3720:39
6:39
+0:06
Half
13.11 mi11:32:471:26:456:374:32
6:39
0:00
25K
15.53 mi11:49:011:42:596:3816:14
6:42
+0:03
30K
18.64 mi12:10:232:04:216:4021:22
6:53
+0:11
20M
20.00 mi12:19:552:13:536:429:32
7:01
+0:08
21M
21.00 mi12:26:552:20:536:437:00
7:01
0:00
35K
21.75 mi12:31:542:25:526:424:59
6:40
-0:21
23M
23.00 mi12:40:312:34:296:438:37
6:53
+0:13
24M
24.00 mi12:47:242:41:226:436:53
6:53
0:00
40K
24.85 mi12:53:312:47:296:446:07
7:09
+0:16
25.2M
25.20 mi12:55:592:49:576:452:28
7:09
0:00
Finish
26.22 mi13:02:402:56:386:456:41
6:34
-0:35

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

6:30 /mi

Average Pace

6:45 /mi

Slowest Pace

7:09 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:48:03

95% of race

Time at Steady Pace

8:35

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:44 /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 mi10:26:1320:116:3020:11
6:30
#3813
10K
6.21 mi10:47:1541:136:3821:02
6:46
#4761
15K
9.32 mi11:07:361:01:346:3620:21
6:33
#4441
20K
12.43 mi11:28:151:22:136:3720:39
6:39
#4308
Half
13.11 mi11:32:471:26:456:374:32
6:39
#4313
25K
15.53 mi11:49:011:42:596:3816:14
6:42
#4215
30K
18.64 mi12:10:232:04:216:4021:22
6:53
#4090
20M
20.00 mi12:19:552:13:536:429:32
7:01
#4069
21M
21.00 mi12:26:552:20:536:437:00
7:01
#3911
35K
21.75 mi12:31:542:25:526:424:59
6:40
#3864
23M
23.00 mi12:40:312:34:296:438:37
6:53
#3787
24M
24.00 mi12:47:242:41:226:436:53
6:53
#3774
40K
24.85 mi12:53:312:47:296:446:07
7:09
#3792
25.2M
25.20 mi12:55:592:49:576:452:28
7:09
#3743
Finish
26.22 mi13:02:402:56:386:456:41
6:34
#3648
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi3813360836083893(Top 14%)3673(Top 23%)3673(Top 65%)
10K6.21 mi3.10 mi4761-9484457-8494457-8496046(Top 21%)5523(Top 34%)5523(Top 98%)
15K9.32 mi3.11 mi4441+3204176+2814176+2813893(Top 14%)3673(Top 23%)3673(Top 65%)
20K12.43 mi3.11 mi4308+1334050+1264050+1263991(Top 14%)3753(Top 23%)3753(Top 67%)
Half13.11 mi0.68 mi4313-54052-24052-24823(Top 17%)4483(Top 28%)4483(Top 79%)
25K15.53 mi2.42 mi4215+983957+953957+954102(Top 14%)3824(Top 24%)3824(Top 68%)
30K18.64 mi3.11 mi4090+1253837+1203837+1203938(Top 14%)3627(Top 23%)3627(Top 64%)
20M20.00 mi1.36 mi4069+213810+273810+274148(Top 15%)3790(Top 24%)3790(Top 67%)
21M21.00 mi1.00 mi3911+1583668+1423668+1422286(Top 8%)2132(Top 13%)2132(Top 38%)
35K21.75 mi0.75 mi3864+473623+453623+453314(Top 12%)3030(Top 19%)3030(Top 54%)
23M23.00 mi1.25 mi3787+773545+783545+783136(Top 11%)2866(Top 18%)2866(Top 51%)
24M24.00 mi1.00 mi3774+133525+203525+203996(Top 14%)3535(Top 22%)3535(Top 63%)
40K24.85 mi0.85 mi3792-183532-73532-74727(Top 17%)4005(Top 25%)4005(Top 71%)
25.2M25.20 mi0.35 mi3743+493486+463486+462049(Top 7%)1842(Top 11%)1842(Top 33%)
Finish26.22 mi1.02 mi3648+953396+903396+903112(Top 11%)2767(Top 17%)2767(Top 49%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 14%
×21stories
+97ft-345ft

Overall

3893

Males

3673

M18-39

3673

5K→10K

3.1 - 6.2 mi

Top 21%
×5stories
+79ft-138ft

Overall

6046

Males

5523

M18-39

5523

10K→15K

6.2 - 9.3 mi

Top 14%
×3stories
+67ft-78ft

Overall

3893

Males

3673

M18-39

3673

15K→20K

9.3 - 12.4 mi

Top 14%
×5stories
+106ft-86ft

Overall

3991

Males

3753

M18-39

3753

20K→Half

12.4 - 13.1 mi

Top 17%
×2stories
+19ft-37ft

Overall

4823

Males

4483

M18-39

4483

Half→25K

13.1 - 15.5 mi

Top 14%
×4stories
+66ft-88ft

Overall

4102

Males

3824

M18-39

3824

25K→30K

15.5 - 18.6 mi

Top 14%
×9stories
+181ft-148ft

Overall

3938

Males

3627

M18-39

3627

30K→20M

18.6 - 20.0 mi

Top 15%
×5stories
+64ft-50ft

Overall

4148

Males

3790

M18-39

3790

20M→21M

20.0 - 21.0 mi

Top 8%
×8stories
+106ft-24ft

Overall

2286

Males

2132

M18-39

2132

21M→35K

21.0 - 21.8 mi

Top 12%
×7stories
+17ft-86ft

Overall

3314

Males

3030

M18-39

3030

35K→23M

21.8 - 23.0 mi

Top 11%
×5stories
+23ft-63ft

Overall

3136

Males

2866

M18-39

2866

23M→24M

23.0 - 24.0 mi

Top 14%
×6stories
+12ft-82ft

Overall

3996

Males

3535

M18-39

3535

24M→40K

24.0 - 24.9 mi

Top 17%
×1story
+6ft-20ft

Overall

4727

Males

4005

M18-39

4005

40K→25.2M

24.9 - 25.2 mi

Top 7%
×1story
+13ft-16ft

Overall

2049

Males

1842

M18-39

1842

25.2M→Finish

25.2 - 26.2 mi

Top 11%
×2stories
+22ft-21ft

Overall

3112

Males

2767

M18-39

2767

Passing Analysis

Category:
Athletes Passed
1518
Passed By
1353
Net Change
+165
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3813
5K → 10K5953-948#3813#4761
10K → 15K33010+320#4761#4441
15K → 20K17037+133#4441#4308
20K → Half2227-5#4308#4313
Half → 25K13537+98#4313#4215
25K → 30K20277+125#4215#4090
30K → 20M7453+21#4090#4069
20M → 21M1624+158#4069#3911
21M → 35K5710+47#3911#3864
35K → 23M10528+77#3864#3787
23M → 24M5441+13#3787#3774
24M → 40K4058-18#3774#3792
40K → 25.2M501+49#3792#3743
25.2M → Finish11217+95#3743#3648
TOTALS15181353+165
📊

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