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BOSTON MARATHON 2025

Nathan Komar

Bib: 5221•M

MO

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
20:56
Rank: #5779
Start → 5K
20:56 | 6:44/mi
10K· 6.21 mi
41:59
Rank: #5894 (-115)
5K → 10K
21:03 | 6:47/mi
15K· 9.32 mi
1:03:04
Rank: #5881 (+13)
10K → 15K
21:05 | 6:47/mi
20K· 12.43 mi
1:23:51
Rank: #5446 (+435)
15K → 20K
20:47 | 6:41/mi
Half· 13.11 mi
1:28:32
Rank: #5513 (-67)
20K → Half
4:41 | 6:52/mi
25K· 15.53 mi
1:44:42
Rank: #5161 (+352)
Half → 25K
16:10 | 6:40/mi
30K· 18.64 mi
2:05:54
Rank: #4781 (+380)
25K → 30K
21:12 | 6:49/mi
20M
2:15:07
Rank: #4566 (+215)
30K → 20M
9:13 | 6:47/mi
21M
2:22:08
Rank: #4343 (+223)
20M → 21M
7:01 | 7:01/mi
35K· 21.75 mi
2:26:58
Rank: #4220 (+123)
21M → 35K
4:50 | 6:28/mi
23M
2:35:19
Rank: #4041 (+179)
35K → 23M
8:21 | 6:40/mi
24M
2:41:52
Rank: #3921 (+120)
23M → 24M
6:33 | 6:33/mi
40K· 24.85 mi
2:47:35
Rank: #3819 (+102)
24M → 40K
5:43 | 6:41/mi
25.2M
2:50:02
Rank: #3759 (+60)
40K → 25.2M
2:27 | 7:06/mi
Finish· 26.22 mi
2:56:28
Rank: #3609 (+150)
25.2M → Finish
6:26 | 6:19/mi

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:28:32
Pace6:45 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:27:56
Pace6:42 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:26:2120:566:4420:56
6:44
-
10K
6.21 mi10:47:2441:596:4521:03
6:47
+0:03
15K
9.32 mi11:08:291:03:046:4621:05
6:47
0:00
20K
12.43 mi11:29:161:23:516:4520:47
6:41
-0:06
Half
13.11 mi11:33:571:28:326:454:41
6:52
+0:11
25K
15.53 mi11:50:071:44:426:4416:10
6:40
-0:12
30K
18.64 mi12:11:192:05:546:4521:12
6:49
+0:09
20M
20.00 mi12:20:322:15:076:459:13
6:47
-0:02
21M
21.00 mi12:27:332:22:086:467:01
7:01
+0:14
35K
21.75 mi12:32:232:26:586:454:50
6:28
-0:33
23M
23.00 mi12:40:442:35:196:458:21
6:40
+0:12
24M
24.00 mi12:47:172:41:526:456:33
6:33
-0:07
40K
24.85 mi12:53:002:47:356:455:43
6:41
+0:08
25.2M
25.20 mi12:55:272:50:026:452:27
7:06
+0:25
Finish
26.22 mi13:01:532:56:286:446:26
6:19
-0:47

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

6:19 /mi

Average Pace

6:44 /mi

Slowest Pace

7:06 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:47:00

95% of race

Time at Steady Pace

9:28

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 mi10:26:2120:566:4420:56
6:44
#5779
10K
6.21 mi10:47:2441:596:4521:03
6:47
#5894
15K
9.32 mi11:08:291:03:046:4621:05
6:47
#5881
20K
12.43 mi11:29:161:23:516:4520:47
6:41
#5446
Half
13.11 mi11:33:571:28:326:454:41
6:52
#5513
25K
15.53 mi11:50:071:44:426:4416:10
6:40
#5161
30K
18.64 mi12:11:192:05:546:4521:12
6:49
#4781
20M
20.00 mi12:20:322:15:076:459:13
6:47
#4566
21M
21.00 mi12:27:332:22:086:467:01
7:01
#4343
35K
21.75 mi12:32:232:26:586:454:50
6:28
#4220
23M
23.00 mi12:40:442:35:196:458:21
6:40
#4041
24M
24.00 mi12:47:172:41:526:456:33
6:33
#3921
40K
24.85 mi12:53:002:47:356:455:43
6:41
#3819
25.2M
25.20 mi12:55:272:50:026:452:27
7:06
#3759
Finish
26.22 mi13:01:532:56:286:446:26
6:19
#3609
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi5779533153315947(Top 21%)5413(Top 34%)5413(Top 96%)
10K6.21 mi3.10 mi5894-1155419-885419-886103(Top 21%)5565(Top 35%)5565(Top 99%)
15K9.32 mi3.11 mi5881+135397+225397+225947(Top 21%)5413(Top 34%)5413(Top 96%)
20K12.43 mi3.11 mi5446+4355027+3705027+3704349(Top 15%)4067(Top 25%)4067(Top 72%)
Half13.11 mi0.68 mi5513-675076-495076-496624(Top 23%)5920(Top 37%)5920(Top 105%)
25K15.53 mi2.42 mi5161+3524783+2934783+2933909(Top 14%)3656(Top 23%)3656(Top 65%)
30K18.64 mi3.11 mi4781+3804426+3574426+3573600(Top 13%)3337(Top 21%)3337(Top 59%)
20M20.00 mi1.36 mi4566+2154237+1894237+1892857(Top 10%)2673(Top 17%)2673(Top 47%)
21M21.00 mi1.00 mi4343+2234038+1994038+1992350(Top 8%)2196(Top 14%)2196(Top 39%)
35K21.75 mi0.75 mi4220+1233928+1103928+1102318(Top 8%)2170(Top 13%)2170(Top 38%)
23M23.00 mi1.25 mi4041+1793762+1663762+1662137(Top 8%)1998(Top 12%)1998(Top 35%)
24M24.00 mi1.00 mi3921+1203649+1133649+1132278(Top 8%)2110(Top 13%)2110(Top 37%)
40K24.85 mi0.85 mi3819+1023552+973552+972329(Top 8%)2134(Top 13%)2134(Top 38%)
25.2M25.20 mi0.35 mi3759+603500+523500+521852(Top 7%)1691(Top 10%)1691(Top 30%)
Finish26.22 mi1.02 mi3609+1503364+1363364+1361973(Top 7%)1817(Top 11%)1817(Top 32%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 21%
×21stories
+97ft-345ft

Overall

5947

Males

5413

M18-39

5413

5K→10K

3.1 - 6.2 mi

Top 21%
×5stories
+79ft-138ft

Overall

6103

Males

5565

M18-39

5565

10K→15K

6.2 - 9.3 mi

Top 21%
×3stories
+67ft-78ft

Overall

5947

Males

5413

M18-39

5413

15K→20K

9.3 - 12.4 mi

Top 15%
×5stories
+106ft-86ft

Overall

4349

Males

4067

M18-39

4067

20K→Half

12.4 - 13.1 mi

Top 23%
×2stories
+19ft-37ft

Overall

6624

Males

5920

M18-39

5920

Half→25K

13.1 - 15.5 mi

Top 14%
×4stories
+66ft-88ft

Overall

3909

Males

3656

M18-39

3656

25K→30K

15.5 - 18.6 mi

Top 13%
×9stories
+181ft-148ft

Overall

3600

Males

3337

M18-39

3337

30K→20M

18.6 - 20.0 mi

Top 10%
×5stories
+64ft-50ft

Overall

2857

Males

2673

M18-39

2673

20M→21M

20.0 - 21.0 mi

Top 8%
×8stories
+106ft-24ft

Overall

2350

Males

2196

M18-39

2196

21M→35K

21.0 - 21.8 mi

Top 8%
×7stories
+17ft-86ft

Overall

2318

Males

2170

M18-39

2170

35K→23M

21.8 - 23.0 mi

Top 8%
×5stories
+23ft-63ft

Overall

2137

Males

1998

M18-39

1998

23M→24M

23.0 - 24.0 mi

Top 8%
×6stories
+12ft-82ft

Overall

2278

Males

2110

M18-39

2110

24M→40K

24.0 - 24.9 mi

Top 8%
×1story
+6ft-20ft

Overall

2329

Males

2134

M18-39

2134

40K→25.2M

24.9 - 25.2 mi

Top 7%
×1story
+13ft-16ft

Overall

1852

Males

1691

M18-39

1691

25.2M→Finish

25.2 - 26.2 mi

Top 7%
×2stories
+22ft-21ft

Overall

1973

Males

1817

M18-39

1817

Passing Analysis

Category:
Athletes Passed
2678
Passed By
508
Net Change
+2170
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5779
5K → 10K132247-115#5779#5894
10K → 15K141128+13#5894#5881
15K → 20K4416+435#5881#5446
20K → Half1683-67#5446#5513
Half → 25K3564+352#5513#5161
25K → 30K39818+380#5161#4781
30K → 20M2161+215#4781#4566
20M → 21M2241+223#4566#4343
21M → 35K1285+123#4343#4220
35K → 23M1823+179#4220#4041
23M → 24M1255+120#4041#3921
24M → 40K1075+102#3921#3819
40K → 25.2M611+60#3819#3759
25.2M → Finish1511+150#3759#3609
TOTALS2678508+2170
📊

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