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BOSTON MARATHON 2025

Carl Chmelik

Bib: 4839•M

MN

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 9%
Gender (Male)
#0 / 16105
Top 15%
Division (M18-39)
#0 / 5642
Top 34%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:01
Rank: #3421
Start → 5K
20:01 | 6:27/mi
10K· 6.21 mi
39:49
Rank: #3125 (+296)
5K → 10K
19:48 | 6:22/mi
15K· 9.32 mi
59:20
Rank: #2774 (+351)
10K → 15K
19:31 | 6:17/mi
20K· 12.43 mi
1:20:10
Rank: #3167 (-393)
15K → 20K
20:50 | 6:42/mi
Half· 13.11 mi
1:24:21
Rank: #3080 (+87)
20K → Half
4:11 | 6:08/mi
25K· 15.53 mi
1:39:34
Rank: #2796 (+284)
Half → 25K
15:13 | 6:17/mi
30K· 18.64 mi
1:59:49
Rank: #2592 (+204)
25K → 30K
20:15 | 6:31/mi
20M
2:08:55
Rank: #2552 (+40)
30K → 20M
9:06 | 6:42/mi
21M
2:15:55
Rank: #2508 (+44)
20M → 21M
7:00 | 7:00/mi
35K· 21.75 mi
2:20:50
Rank: #2504 (+4)
21M → 35K
4:55 | 6:34/mi
23M
2:29:31
Rank: #2518 (-14)
35K → 23M
8:41 | 6:56/mi
24M
2:36:19
Rank: #2536 (-18)
23M → 24M
6:48 | 6:48/mi
40K· 24.85 mi
2:42:15
Rank: #2542 (-6)
24M → 40K
5:56 | 6:56/mi
25.2M
2:44:47
Rank: #2533 (+9)
40K → 25.2M
2:32 | 7:21/mi
Finish· 26.22 mi
2:51:17
Rank: #2492 (+41)
25.2M → Finish
6:30 | 6:23/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:24:21
Pace6:26 /mi
2nd Half
Distance13.11 mi
Time1:26:56
Pace6:38 /mi
📊Positive Split: 3.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:25:3020:016:2720:01
6:27
-
10K
6.21 mi10:45:1839:496:2419:48
6:22
-0:05
15K
9.32 mi11:04:4959:206:2219:31
6:17
-0:05
20K
12.43 mi11:25:391:20:106:2720:50
6:42
+0:25
Half
13.11 mi11:29:501:24:216:264:11
6:08
-0:34
25K
15.53 mi11:45:031:39:346:2515:13
6:17
+0:09
30K
18.64 mi12:05:181:59:496:2620:15
6:31
+0:14
20M
20.00 mi12:14:242:08:556:279:06
6:42
+0:11
21M
21.00 mi12:21:242:15:556:287:00
7:00
+0:18
35K
21.75 mi12:26:192:20:506:294:55
6:34
-0:26
23M
23.00 mi12:35:002:29:316:308:41
6:56
+0:22
24M
24.00 mi12:41:482:36:196:316:48
6:48
-0:08
40K
24.85 mi12:47:442:42:156:325:56
6:56
+0:08
25.2M
25.20 mi12:50:162:44:476:322:32
7:21
+0:25
Finish
26.22 mi12:56:462:51:176:326:30
6:23
-0:58

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

6:08 /mi

Average Pace

6:32 /mi

Slowest Pace

7:21 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:20:20

82% of race

Time at Steady Pace

28:25

17% of race

Time at Slower Pace

2:32

1% of race

Average Pace: 6:32 /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 mi10:25:3020:016:2720:01
6:27
#3421
10K
6.21 mi10:45:1839:496:2419:48
6:22
#3125
15K
9.32 mi11:04:4959:206:2219:31
6:17
#2774
20K
12.43 mi11:25:391:20:106:2720:50
6:42
#3167
Half
13.11 mi11:29:501:24:216:264:11
6:08
#3080
25K
15.53 mi11:45:031:39:346:2515:13
6:17
#2796
30K
18.64 mi12:05:181:59:496:2620:15
6:31
#2592
20M
20.00 mi12:14:242:08:556:279:06
6:42
#2552
21M
21.00 mi12:21:242:15:556:287:00
7:00
#2508
35K
21.75 mi12:26:192:20:506:294:55
6:34
#2504
23M
23.00 mi12:35:002:29:316:308:41
6:56
#2518
24M
24.00 mi12:41:482:36:196:316:48
6:48
#2536
40K
24.85 mi12:47:442:42:156:325:56
6:56
#2542
25.2M
25.20 mi12:50:162:44:476:322:32
7:21
#2533
Finish
26.22 mi12:56:462:51:176:326:30
6:23
#2492
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi3421325032502269(Top 8%)2164(Top 13%)2164(Top 38%)
10K6.21 mi3.10 mi3125+2962972+2782972+2782875(Top 10%)2737(Top 17%)2737(Top 49%)
15K9.32 mi3.11 mi2774+3512644+3282644+3282269(Top 8%)2164(Top 13%)2164(Top 38%)
20K12.43 mi3.11 mi3167-3933016-3723016-3724481(Top 16%)4176(Top 26%)4176(Top 74%)
Half13.11 mi0.68 mi3080+872937+792937+791703(Top 6%)1622(Top 10%)1622(Top 29%)
25K15.53 mi2.42 mi2796+2842667+2702667+2701769(Top 6%)1681(Top 10%)1681(Top 30%)
30K18.64 mi3.11 mi2592+2042476+1912476+1912067(Top 7%)1966(Top 12%)1966(Top 35%)
20M20.00 mi1.36 mi2552+402436+402436+402459(Top 9%)2320(Top 14%)2320(Top 41%)
21M21.00 mi1.00 mi2508+442392+442392+442266(Top 8%)2117(Top 13%)2117(Top 38%)
35K21.75 mi0.75 mi2504+42384+82384+82842(Top 10%)2624(Top 16%)2624(Top 47%)
23M23.00 mi1.25 mi2518-142396-122396-123412(Top 12%)3100(Top 19%)3100(Top 55%)
24M24.00 mi1.00 mi2536-182410-142410-143516(Top 12%)3151(Top 20%)3151(Top 56%)
40K24.85 mi0.85 mi2542-62411-12411-13576(Top 13%)3172(Top 20%)3172(Top 56%)
25.2M25.20 mi0.35 mi2533+92401+102401+102766(Top 10%)2468(Top 15%)2468(Top 44%)
Finish26.22 mi1.02 mi2492+412362+392362+392235(Top 8%)2048(Top 13%)2048(Top 36%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 8%
×21stories
+97ft-345ft

Overall

2269

Males

2164

M18-39

2164

5K→10K

3.1 - 6.2 mi

Top 10%
×5stories
+79ft-138ft

Overall

2875

Males

2737

M18-39

2737

10K→15K

6.2 - 9.3 mi

Top 8%
×3stories
+67ft-78ft

Overall

2269

Males

2164

M18-39

2164

15K→20K

9.3 - 12.4 mi

Top 16%
×5stories
+106ft-86ft

Overall

4481

Males

4176

M18-39

4176

20K→Half

12.4 - 13.1 mi

Top 6%
×2stories
+19ft-37ft

Overall

1703

Males

1622

M18-39

1622

Half→25K

13.1 - 15.5 mi

Top 6%
×4stories
+66ft-88ft

Overall

1769

Males

1681

M18-39

1681

25K→30K

15.5 - 18.6 mi

Top 7%
×9stories
+181ft-148ft

Overall

2067

Males

1966

M18-39

1966

30K→20M

18.6 - 20.0 mi

Top 9%
×5stories
+64ft-50ft

Overall

2459

Males

2320

M18-39

2320

20M→21M

20.0 - 21.0 mi

Top 8%
×8stories
+106ft-24ft

Overall

2266

Males

2117

M18-39

2117

21M→35K

21.0 - 21.8 mi

Top 10%
×7stories
+17ft-86ft

Overall

2842

Males

2624

M18-39

2624

35K→23M

21.8 - 23.0 mi

Top 12%
×5stories
+23ft-63ft

Overall

3412

Males

3100

M18-39

3100

23M→24M

23.0 - 24.0 mi

Top 12%
×6stories
+12ft-82ft

Overall

3516

Males

3151

M18-39

3151

24M→40K

24.0 - 24.9 mi

Top 13%
×1story
+6ft-20ft

Overall

3576

Males

3172

M18-39

3172

40K→25.2M

24.9 - 25.2 mi

Top 10%
×1story
+13ft-16ft

Overall

2766

Males

2468

M18-39

2468

25.2M→Finish

25.2 - 26.2 mi

Top 8%
×2stories
+22ft-21ft

Overall

2235

Males

2048

M18-39

2048

Passing Analysis

Category:
Athletes Passed
1650
Passed By
721
Net Change
+929
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3421
5K → 10K32731+296#3421#3125
10K → 15K3554+351#3125#2774
15K → 20K17410-393#2774#3167
20K → Half881+87#3167#3080
Half → 25K2840+284#3080#2796
25K → 30K2128+204#2796#2592
30K → 20M7131+40#2592#2552
20M → 21M6622+44#2552#2508
21M → 35K3531+4#2508#2504
35K → 23M4761-14#2504#2518
23M → 24M4260-18#2518#2536
24M → 40K3137-6#2536#2542
40K → 25.2M156+9#2542#2533
25.2M → Finish6019+41#2533#2492
TOTALS1650721+929
📊

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