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BOSTON MARATHON 2023

Nadav Karasov

Bib: 6787•M

DC

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 13%
Gender (Male)
#0 / 15176
Top 22%
Division (M18-39)
#0 / 5285
Top 46%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:59
Rank: #4172
Start → 5K
20:59 | 6:45/mi
10K· 6.21 mi
41:36
Rank: #3921 (+251)
5K → 10K
20:37 | 6:38/mi
15K· 9.32 mi
1:02:22
Rank: #3930 (-9)
10K → 15K
20:46 | 6:41/mi
20K· 12.43 mi
1:23:18
Rank: #3897 (+33)
15K → 20K
20:56 | 6:44/mi
Half· 13.11 mi
1:27:53
Rank: #3922 (-25)
20K → Half
4:35 | 6:43/mi
25K· 15.53 mi
1:44:20
Rank: #3925 (-3)
Half → 25K
16:27 | 6:47/mi
30K· 18.64 mi
2:06:04
Rank: #3968 (-43)
25K → 30K
21:44 | 7:00/mi
20M
2:15:32
Rank: #3941 (+27)
30K → 20M
9:28 | 6:58/mi
21M
2:22:49
Rank: #3870 (+71)
20M → 21M
7:17 | 7:17/mi
35K· 21.75 mi
2:27:50
Rank: #3854 (+16)
21M → 35K
5:01 | 6:42/mi
23M
2:36:29
Rank: #3783 (+71)
35K → 23M
8:39 | 6:55/mi
24M
2:43:18
Rank: #3761 (+22)
23M → 24M
6:49 | 6:49/mi
40K· 24.85 mi
2:49:12
Rank: #3718 (+43)
24M → 40K
5:54 | 6:54/mi
25.2M
2:51:40
Rank: #3676 (+42)
40K → 25.2M
2:28 | 7:09/mi
Finish· 26.22 mi
2:58:18
Rank: #3587 (+89)
25.2M → Finish
6:38 | 6:31/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:27:53
Pace6:42 /mi
2nd Half
Distance13.11 mi
Time1:30:25
Pace6:54 /mi
📊Positive Split: 2.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:4420:596:4520:59
6:45
-
10K
6.21 mi10:44:2141:366:4220:37
6:38
-0:07
15K
9.32 mi11:05:071:02:226:4120:46
6:41
+0:03
20K
12.43 mi11:26:031:23:186:4220:56
6:44
+0:03
Half
13.11 mi11:30:381:27:536:424:35
6:43
-0:01
25K
15.53 mi11:47:051:44:206:4316:27
6:47
+0:04
30K
18.64 mi12:08:492:06:046:4621:44
7:00
+0:13
20M
20.00 mi12:18:172:15:326:479:28
6:58
-0:02
21M
21.00 mi12:25:342:22:496:487:17
7:17
+0:19
35K
21.75 mi12:30:352:27:506:485:01
6:42
-0:35
23M
23.00 mi12:39:142:36:296:488:39
6:55
+0:13
24M
24.00 mi12:46:032:43:186:486:49
6:49
-0:06
40K
24.85 mi12:51:572:49:126:485:54
6:54
+0:05
25.2M
25.20 mi12:54:252:51:406:492:28
7:09
+0:15
Finish
26.22 mi13:01:032:58:186:486:38
6:31
-0:38

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

6:31 /mi

Average Pace

6:48 /mi

Slowest Pace

7:17 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:51:01

96% of race

Time at Steady Pace

7:17

4% of race

Time at Slower Pace

0:00

0% 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 mi10:23:4420:596:4520:59
6:45
#4172
10K
6.21 mi10:44:2141:366:4220:37
6:38
#3921
15K
9.32 mi11:05:071:02:226:4120:46
6:41
#3930
20K
12.43 mi11:26:031:23:186:4220:56
6:44
#3897
Half
13.11 mi11:30:381:27:536:424:35
6:43
#3922
25K
15.53 mi11:47:051:44:206:4316:27
6:47
#3925
30K
18.64 mi12:08:492:06:046:4621:44
7:00
#3968
20M
20.00 mi12:18:172:15:326:479:28
6:58
#3941
21M
21.00 mi12:25:342:22:496:487:17
7:17
#3870
35K
21.75 mi12:30:352:27:506:485:01
6:42
#3854
23M
23.00 mi12:39:142:36:296:488:39
6:55
#3783
24M
24.00 mi12:46:032:43:186:486:49
6:49
#3761
40K
24.85 mi12:51:572:49:126:485:54
6:54
#3718
25.2M
25.20 mi12:54:252:51:406:492:28
7:09
#3676
Finish
26.22 mi13:01:032:58:186:486:38
6:31
#3587
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi4172390839083973(Top 15%)3734(Top 25%)3734(Top 71%)
10K6.21 mi3.10 mi3921+2513691+2173691+2173764(Top 14%)3551(Top 23%)3551(Top 67%)
15K9.32 mi3.11 mi3930-93700-93700-93973(Top 15%)3734(Top 25%)3734(Top 71%)
20K12.43 mi3.11 mi3897+333670+303670+303863(Top 15%)3643(Top 24%)3643(Top 69%)
Half13.11 mi0.68 mi3922-253693-233693-234444(Top 17%)4136(Top 27%)4136(Top 78%)
25K15.53 mi2.42 mi3925-33697-43697-43994(Top 15%)3745(Top 25%)3745(Top 71%)
30K18.64 mi3.11 mi3968-433736-393736-394303(Top 16%)4001(Top 26%)4001(Top 76%)
20M20.00 mi1.36 mi3941+273709+273709+273801(Top 14%)3537(Top 23%)3537(Top 67%)
21M21.00 mi1.00 mi3870+713643+663643+663520(Top 13%)3271(Top 22%)3271(Top 62%)
35K21.75 mi0.75 mi3854+163626+173626+173592(Top 13%)3326(Top 22%)3326(Top 63%)
23M23.00 mi1.25 mi3783+713563+633563+633284(Top 12%)3053(Top 20%)3053(Top 58%)
24M24.00 mi1.00 mi3761+223539+243539+243730(Top 14%)3416(Top 23%)3416(Top 65%)
40K24.85 mi0.85 mi3718+433495+443495+443324(Top 12%)3040(Top 20%)3040(Top 58%)
25.2M25.20 mi0.35 mi3676+423458+373458+372348(Top 9%)2181(Top 14%)2181(Top 41%)
Finish26.22 mi1.02 mi3587+893375+833375+832536(Top 10%)2330(Top 15%)2330(Top 44%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 15%
×21stories
+97ft-345ft

Overall

3973

Males

3734

M18-39

3734

5K→10K

3.1 - 6.2 mi

Top 14%
×5stories
+79ft-138ft

Overall

3764

Males

3551

M18-39

3551

10K→15K

6.2 - 9.3 mi

Top 15%
×3stories
+67ft-78ft

Overall

3973

Males

3734

M18-39

3734

15K→20K

9.3 - 12.4 mi

Top 15%
×5stories
+106ft-86ft

Overall

3863

Males

3643

M18-39

3643

20K→Half

12.4 - 13.1 mi

Top 17%
×2stories
+19ft-37ft

Overall

4444

Males

4136

M18-39

4136

Half→25K

13.1 - 15.5 mi

Top 15%
×4stories
+66ft-88ft

Overall

3994

Males

3745

M18-39

3745

25K→30K

15.5 - 18.6 mi

Top 16%
×9stories
+181ft-148ft

Overall

4303

Males

4001

M18-39

4001

30K→20M

18.6 - 20.0 mi

Top 14%
×5stories
+64ft-50ft

Overall

3801

Males

3537

M18-39

3537

20M→21M

20.0 - 21.0 mi

Top 13%
×8stories
+106ft-24ft

Overall

3520

Males

3271

M18-39

3271

21M→35K

21.0 - 21.8 mi

Top 13%
×7stories
+17ft-86ft

Overall

3592

Males

3326

M18-39

3326

35K→23M

21.8 - 23.0 mi

Top 12%
×5stories
+23ft-63ft

Overall

3284

Males

3053

M18-39

3053

23M→24M

23.0 - 24.0 mi

Top 14%
×6stories
+12ft-82ft

Overall

3730

Males

3416

M18-39

3416

24M→40K

24.0 - 24.9 mi

Top 12%
×1story
+6ft-20ft

Overall

3324

Males

3040

M18-39

3040

40K→25.2M

24.9 - 25.2 mi

Top 9%
×1story
+13ft-16ft

Overall

2348

Males

2181

M18-39

2181

25.2M→Finish

25.2 - 26.2 mi

Top 10%
×2stories
+22ft-21ft

Overall

2536

Males

2330

M18-39

2330

Passing Analysis

Category:
Athletes Passed
1397
Passed By
812
Net Change
+585
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4172
5K → 10K378127+251#4172#3921
10K → 15K124133-9#3921#3930
15K → 20K12491+33#3930#3897
20K → Half1136-25#3897#3922
Half → 25K7679-3#3922#3925
25K → 30K101144-43#3925#3968
30K → 20M7649+27#3968#3941
20M → 21M10231+71#3941#3870
21M → 35K3822+16#3870#3854
35K → 23M9120+71#3854#3783
23M → 24M5432+22#3783#3761
24M → 40K7027+43#3761#3718
40K → 25.2M475+42#3718#3676
25.2M → Finish10516+89#3676#3587
TOTALS1397812+585
📊

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