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BOSTON MARATHON 2023

Jeremy Rosenthal

Bib: 8624•M

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0:00
/ mi
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Overall
#0 / 26622
Top 35%
Gender (Male)
#0 / 15176
Division (M18-39)
#0 / 5285
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:12
Rank: #9344
Start → 5K
23:12 | 7:28/mi
10K· 6.21 mi
46:28
Rank: #9816 (-472)
5K → 10K
23:16 | 7:29/mi
15K· 9.32 mi
1:10:10
Rank: #10306 (-490)
10K → 15K
23:42 | 7:38/mi
20K· 12.43 mi
1:33:49
Rank: #10267 (+39)
15K → 20K
23:39 | 7:37/mi
Half· 13.11 mi
1:38:58
Rank: #10282 (-15)
20K → Half
5:09 | 7:33/mi
25K· 15.53 mi
1:57:34
Rank: #10209 (+73)
Half → 25K
18:36 | 7:40/mi
30K· 18.64 mi
2:22:07
Rank: #10160 (+49)
25K → 30K
24:33 | 7:54/mi
20M
2:32:49
Rank: #10080 (+80)
30K → 20M
10:42 | 7:52/mi
21M
2:41:03
Rank: #9973 (+107)
20M → 21M
8:14 | 8:14/mi
35K· 21.75 mi
2:46:55
Rank: #9977 (-4)
21M → 35K
5:52 | 7:51/mi
23M
2:56:54
Rank: #9929 (+48)
35K → 23M
9:59 | 7:58/mi
24M
3:04:43
Rank: #9904 (+25)
23M → 24M
7:49 | 7:49/mi
40K· 24.85 mi
3:11:17
Rank: #9802 (+102)
24M → 40K
6:34 | 7:41/mi
25.2M
3:14:01
Rank: #9712 (+90)
40K → 25.2M
2:44 | 7:56/mi
Finish· 26.22 mi
3:20:58
Rank: #9445 (+267)
25.2M → Finish
6:57 | 6:49/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:38:58
Pace7:33 /mi
2nd Half
Distance13.11 mi
Time1:42:00
Pace7:47 /mi
📊Positive Split: 3.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:48:4023:127:2823:12
7:28
-
10K
6.21 mi11:11:5646:287:2923:16
7:29
+0:01
15K
9.32 mi11:35:381:10:107:3223:42
7:38
+0:09
20K
12.43 mi11:59:171:33:497:3323:39
7:37
-0:01
Half
13.11 mi12:04:261:38:587:335:09
7:33
-0:04
25K
15.53 mi12:23:021:57:347:3418:36
7:40
+0:07
30K
18.64 mi12:47:352:22:077:3724:33
7:54
+0:14
20M
20.00 mi12:58:172:32:497:3810:42
7:52
-0:02
21M
21.00 mi13:06:312:41:037:408:14
8:14
+0:22
35K
21.75 mi13:12:232:46:557:415:52
7:51
-0:23
23M
23.00 mi13:22:222:56:547:419:59
7:58
+0:07
24M
24.00 mi13:30:113:04:437:427:49
7:49
-0:09
40K
24.85 mi13:36:453:11:177:426:34
7:41
-0:08
25.2M
25.20 mi13:39:293:14:017:422:44
7:56
+0:15
Finish
26.22 mi13:46:263:20:587:406:57
6:49
-1:07

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

6:49 /mi

Average Pace

7:40 /mi

Slowest Pace

8:14 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

53:25

27% of race

Time at Steady Pace

1:25:29

43% of race

Time at Slower Pace

1:02:04

31% of race

Average Pace: 7:40 /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 mi10:48:4023:127:2823:12
7:28
#9344
10K
6.21 mi11:11:5646:287:2923:16
7:29
#9816
15K
9.32 mi11:35:381:10:107:3223:42
7:38
#10306
20K
12.43 mi11:59:171:33:497:3323:39
7:37
#10267
Half
13.11 mi12:04:261:38:587:335:09
7:33
#10282
25K
15.53 mi12:23:021:57:347:3418:36
7:40
#10209
30K
18.64 mi12:47:352:22:077:3724:33
7:54
#10160
20M
20.00 mi12:58:172:32:497:3810:42
7:52
#10080
21M
21.00 mi13:06:312:41:037:408:14
8:14
#9973
35K
21.75 mi13:12:232:46:557:415:52
7:51
#9977
23M
23.00 mi13:22:222:56:547:419:59
7:58
#9929
24M
24.00 mi13:30:113:04:437:427:49
7:49
#9904
40K
24.85 mi13:36:453:11:177:426:34
7:41
#9802
25.2M
25.20 mi13:39:293:14:017:422:44
7:56
#9712
Finish
26.22 mi13:46:263:20:587:406:57
6:49
#9445
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi93447780778011229(Top 42%)8736(Top 58%)8736(Top 165%)
10K6.21 mi3.10 mi9816-4728055-2758055-27510345(Top 39%)8351(Top 55%)8351(Top 158%)
15K9.32 mi3.11 mi10306-4908333-2788333-27811229(Top 42%)8736(Top 58%)8736(Top 165%)
20K12.43 mi3.11 mi10267+398295+388295+3810159(Top 38%)8157(Top 54%)8157(Top 154%)
Half13.11 mi0.68 mi10282-158304-98304-910534(Top 40%)8356(Top 55%)8356(Top 158%)
25K15.53 mi2.42 mi10209+738240+648240+6410059(Top 38%)8017(Top 53%)8017(Top 152%)
30K18.64 mi3.11 mi10160+498174+668174+6610139(Top 38%)7894(Top 52%)7894(Top 149%)
20M20.00 mi1.36 mi10080+808103+718103+719374(Top 35%)7402(Top 49%)7402(Top 140%)
21M21.00 mi1.00 mi9973+1078024+798024+798792(Top 33%)6947(Top 46%)6947(Top 131%)
35K21.75 mi0.75 mi9977-48006+188006+1810907(Top 41%)8056(Top 53%)8056(Top 152%)
23M23.00 mi1.25 mi9929+487956+507956+509551(Top 36%)7255(Top 48%)7255(Top 137%)
24M24.00 mi1.00 mi9904+257905+517905+519893(Top 37%)7339(Top 48%)7339(Top 139%)
40K24.85 mi0.85 mi9802+1027819+867819+867835(Top 29%)6149(Top 41%)6149(Top 116%)
25.2M25.20 mi0.35 mi9712+907764+557764+556097(Top 23%)5028(Top 33%)5028(Top 95%)
Finish26.22 mi1.02 mi9445+2677594+1707594+1704206(Top 16%)3710(Top 24%)3710(Top 70%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 42%
×21stories
+97ft-345ft

Overall

11229

Males

8736

M18-39

8736

5K→10K

3.1 - 6.2 mi

Top 39%
×5stories
+79ft-138ft

Overall

10345

Males

8351

M18-39

8351

10K→15K

6.2 - 9.3 mi

Top 42%
×3stories
+67ft-78ft

Overall

11229

Males

8736

M18-39

8736

15K→20K

9.3 - 12.4 mi

Top 38%
×5stories
+106ft-86ft

Overall

10159

Males

8157

M18-39

8157

20K→Half

12.4 - 13.1 mi

Top 40%
×2stories
+19ft-37ft

Overall

10534

Males

8356

M18-39

8356

Half→25K

13.1 - 15.5 mi

Top 38%
×4stories
+66ft-88ft

Overall

10059

Males

8017

M18-39

8017

25K→30K

15.5 - 18.6 mi

Top 38%
×9stories
+181ft-148ft

Overall

10139

Males

7894

M18-39

7894

30K→20M

18.6 - 20.0 mi

Top 35%
×5stories
+64ft-50ft

Overall

9374

Males

7402

M18-39

7402

20M→21M

20.0 - 21.0 mi

Top 33%
×8stories
+106ft-24ft

Overall

8792

Males

6947

M18-39

6947

21M→35K

21.0 - 21.8 mi

Top 41%
×7stories
+17ft-86ft

Overall

10907

Males

8056

M18-39

8056

35K→23M

21.8 - 23.0 mi

Top 36%
×5stories
+23ft-63ft

Overall

9551

Males

7255

M18-39

7255

23M→24M

23.0 - 24.0 mi

Top 37%
×6stories
+12ft-82ft

Overall

9893

Males

7339

M18-39

7339

24M→40K

24.0 - 24.9 mi

Top 29%
×1story
+6ft-20ft

Overall

7835

Males

6149

M18-39

6149

40K→25.2M

24.9 - 25.2 mi

Top 23%
×1story
+13ft-16ft

Overall

6097

Males

5028

M18-39

5028

25.2M→Finish

25.2 - 26.2 mi

Top 16%
×2stories
+22ft-21ft

Overall

4206

Males

3710

M18-39

3710

Passing Analysis

Category:
Athletes Passed
1708*
Passed By
1806
Net Change
-101
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9344
5K → 10K132604-472#9344#9816
10K → 15K54542-490#9816#10306
15K → 20K177*138+39#10306#10267
20K → Half2237-15#10267#10282
Half → 25K16996+73#10282#10209
25K → 30K179*130+49#10209#10160
30K → 20M127*47+80#10160#10080
20M → 21M143*36+107#10080#9973
21M → 35K4347-4#9973#9977
35K → 23M9547+48#9977#9929
23M → 24M8559+25#9929#9904
24M → 40K122*20+102#9904#9802
40K → 25.2M922+90#9802#9712
25.2M → Finish268*1+267#9712#9445
TOTALS1708*1806-101

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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