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BOSTON MARATHON 2025

Thomas Kovar

Bib: 4789•M

NJ

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 14%
Gender (Male)
#0 / 16105
Top 23%
Division (M18-39)
#0 / 5642
Top 48%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:08
Rank: #3685
Start → 5K
20:08 | 6:29/mi
10K· 6.21 mi
40:19
Rank: #3691 (-6)
5K → 10K
20:11 | 6:30/mi
15K· 9.32 mi
1:00:42
Rank: #3775 (-84)
10K → 15K
20:23 | 6:34/mi
20K· 12.43 mi
1:21:43
Rank: #3984 (-209)
15K → 20K
21:01 | 6:46/mi
Half· 13.11 mi
1:26:14
Rank: #4002 (-18)
20K → Half
4:31 | 6:37/mi
25K· 15.53 mi
1:42:19
Rank: #3914 (+88)
Half → 25K
16:05 | 6:38/mi
30K· 18.64 mi
2:03:54
Rank: #3923 (-9)
25K → 30K
21:35 | 6:57/mi
20M
2:13:19
Rank: #3878 (+45)
30K → 20M
9:25 | 6:56/mi
21M
2:20:51
Rank: #3896 (-18)
20M → 21M
7:32 | 7:32/mi
35K· 21.75 mi
2:25:56
Rank: #3884 (+12)
21M → 35K
5:05 | 6:48/mi
23M
2:34:54
Rank: #3914 (-30)
35K → 23M
8:58 | 7:10/mi
24M
2:42:01
Rank: #3962 (-48)
23M → 24M
7:07 | 7:07/mi
40K· 24.85 mi
2:48:26
Rank: #4051 (-89)
24M → 40K
6:25 | 7:30/mi
25.2M
2:51:11
Rank: #4074 (-23)
40K → 25.2M
2:45 | 7:58/mi
Finish· 26.22 mi
2:58:11
Rank: #4086 (-12)
25.2M → Finish
7:00 | 6:52/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:26:14
Pace6:35 /mi
2nd Half
Distance13.11 mi
Time1:31:57
Pace7:01 /mi
📊Positive Split: 6.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:1920:086:2920:08
6:29
-
10K
6.21 mi10:43:3040:196:2920:11
6:30
+0:01
15K
9.32 mi11:03:531:00:426:3120:23
6:34
+0:04
20K
12.43 mi11:24:541:21:436:3521:01
6:46
+0:12
Half
13.11 mi11:29:251:26:146:354:31
6:37
-0:09
25K
15.53 mi11:45:301:42:196:3516:05
6:38
+0:01
30K
18.64 mi12:07:052:03:546:3921:35
6:57
+0:19
20M
20.00 mi12:16:302:13:196:409:25
6:56
-0:01
21M
21.00 mi12:24:022:20:516:427:32
7:32
+0:36
35K
21.75 mi12:29:072:25:566:435:05
6:48
-0:44
23M
23.00 mi12:38:052:34:546:448:58
7:10
+0:22
24M
24.00 mi12:45:122:42:016:457:07
7:07
-0:03
40K
24.85 mi12:51:372:48:266:476:25
7:30
+0:23
25.2M
25.20 mi12:54:222:51:116:482:45
7:58
+0:28
Finish
26.22 mi13:01:222:58:116:487:00
6:52
-1:06

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

6:29 /mi

Average Pace

6:48 /mi

Slowest Pace

7:58 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:21:18

46% of race

Time at Steady Pace

1:04:06

36% of race

Time at Slower Pace

32:47

18% of race

Average Pace: 6:48 /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 mi10:23:1920:086:2920:08
6:29
#3685
10K
6.21 mi10:43:3040:196:2920:11
6:30
#3691
15K
9.32 mi11:03:531:00:426:3120:23
6:34
#3775
20K
12.43 mi11:24:541:21:436:3521:01
6:46
#3984
Half
13.11 mi11:29:251:26:146:354:31
6:37
#4002
25K
15.53 mi11:45:301:42:196:3516:05
6:38
#3914
30K
18.64 mi12:07:052:03:546:3921:35
6:57
#3923
20M
20.00 mi12:16:302:13:196:409:25
6:56
#3878
21M
21.00 mi12:24:022:20:516:427:32
7:32
#3896
35K
21.75 mi12:29:072:25:566:435:05
6:48
#3884
23M
23.00 mi12:38:052:34:546:448:58
7:10
#3914
24M
24.00 mi12:45:122:42:016:457:07
7:07
#3962
40K
24.85 mi12:51:372:48:266:476:25
7:30
#4051
25.2M
25.20 mi12:54:222:51:116:482:45
7:58
#4074
Finish
26.22 mi13:01:222:58:116:487:00
6:52
#4086
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi3685349134913950(Top 14%)3722(Top 23%)3722(Top 66%)
10K6.21 mi3.10 mi3691-63497-63497-63694(Top 13%)3486(Top 22%)3486(Top 62%)
15K9.32 mi3.11 mi3775-843567-703567-703950(Top 14%)3722(Top 23%)3722(Top 66%)
20K12.43 mi3.11 mi3984-2093751-1843751-1844938(Top 17%)4562(Top 28%)4562(Top 81%)
Half13.11 mi0.68 mi4002-183769-183769-184519(Top 16%)4212(Top 26%)4212(Top 75%)
25K15.53 mi2.42 mi3914+883689+803689+803673(Top 13%)3452(Top 21%)3452(Top 61%)
30K18.64 mi3.11 mi3923-9368936894368(Top 15%)3999(Top 25%)3999(Top 71%)
20M20.00 mi1.36 mi3878+453643+463643+463674(Top 13%)3380(Top 21%)3380(Top 60%)
21M21.00 mi1.00 mi3896-183654-113654-114752(Top 17%)4186(Top 26%)4186(Top 74%)
35K21.75 mi0.75 mi3884+123638+163638+164049(Top 14%)3624(Top 23%)3624(Top 64%)
23M23.00 mi1.25 mi3914-303653-153653-154639(Top 16%)4054(Top 25%)4054(Top 72%)
24M24.00 mi1.00 mi3962-483682-293682-295268(Top 19%)4435(Top 28%)4435(Top 79%)
40K24.85 mi0.85 mi4051-893756-743756-746798(Top 24%)5303(Top 33%)5303(Top 94%)
25.2M25.20 mi0.35 mi4074-233767-113767-115730(Top 20%)4555(Top 28%)4555(Top 81%)
Finish26.22 mi1.02 mi4086-123773-63773-64873(Top 17%)4021(Top 25%)4021(Top 71%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 14%
×21stories
+97ft-345ft

Overall

3950

Males

3722

M18-39

3722

5K→10K

3.1 - 6.2 mi

Top 13%
×5stories
+79ft-138ft

Overall

3694

Males

3486

M18-39

3486

10K→15K

6.2 - 9.3 mi

Top 14%
×3stories
+67ft-78ft

Overall

3950

Males

3722

M18-39

3722

15K→20K

9.3 - 12.4 mi

Top 17%
×5stories
+106ft-86ft

Overall

4938

Males

4562

M18-39

4562

20K→Half

12.4 - 13.1 mi

Top 16%
×2stories
+19ft-37ft

Overall

4519

Males

4212

M18-39

4212

Half→25K

13.1 - 15.5 mi

Top 13%
×4stories
+66ft-88ft

Overall

3673

Males

3452

M18-39

3452

25K→30K

15.5 - 18.6 mi

Top 15%
×9stories
+181ft-148ft

Overall

4368

Males

3999

M18-39

3999

30K→20M

18.6 - 20.0 mi

Top 13%
×5stories
+64ft-50ft

Overall

3674

Males

3380

M18-39

3380

20M→21M

20.0 - 21.0 mi

Top 17%
×8stories
+106ft-24ft

Overall

4752

Males

4186

M18-39

4186

21M→35K

21.0 - 21.8 mi

Top 14%
×7stories
+17ft-86ft

Overall

4049

Males

3624

M18-39

3624

35K→23M

21.8 - 23.0 mi

Top 16%
×5stories
+23ft-63ft

Overall

4639

Males

4054

M18-39

4054

23M→24M

23.0 - 24.0 mi

Top 19%
×6stories
+12ft-82ft

Overall

5268

Males

4435

M18-39

4435

24M→40K

24.0 - 24.9 mi

Top 24%
×1story
+6ft-20ft

Overall

6798

Males

5303

M18-39

5303

40K→25.2M

24.9 - 25.2 mi

Top 20%
×1story
+13ft-16ft

Overall

5730

Males

4555

M18-39

4555

25.2M→Finish

25.2 - 26.2 mi

Top 17%
×2stories
+22ft-21ft

Overall

4873

Males

4021

M18-39

4021

Passing Analysis

Category:
Athletes Passed
843
Passed By
1244
Net Change
-401
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3685
5K → 10K129135-6#3685#3691
10K → 15K71155-84#3691#3775
15K → 20K47256-209#3775#3984
20K → Half826-18#3984#4002
Half → 25K11830+88#4002#3914
25K → 30K118127-9#3914#3923
30K → 20M7530+45#3923#3878
20M → 21M5472-18#3878#3896
21M → 35K4230+12#3896#3884
35K → 23M5888-30#3884#3914
23M → 24M3886-48#3914#3962
24M → 40K24113-89#3962#4051
40K → 25.2M1538-23#4051#4074
25.2M → Finish4658-12#4074#4086
TOTALS8431244-401
📊

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