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BOSTON MARATHON 2023

Jonathan Lessem

Bib: 19321•M

MD

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M55-59)
#0 / 1422
Top 47%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
8:13/mi
25:32
↑ 97↓ 3451.5%
10K· 6.21 mi
8:00/mi
50:22
↑ 79↓ 1380.4%
15K· 9.32 mi
8:02/mi
1:15:18
↑ 67↓ 78
20K· 12.43 mi
8:03/mi
1:40:19
↑ 106↓ 860.1%
Half· 13.11 mi
8:04/mi
1:45:49
↑ 19↓ 370.5%
25K· 15.53 mi
8:04/mi
2:05:23
↑ 66↓ 880.2%
30K· 18.64 mi
8:13/mi
2:30:56
↑ 181↓ 1480.2%
20M
8:20/mi
2:42:15
↑ 64↓ 500.2%
21M
8:25/mi
2:50:40
↑ 106↓ 241.6%
35K· 21.75 mi
8:25/mi
2:56:58
↑ 17↓ 861.7%
23M
8:52/mi
3:08:04
↑ 23↓ 630.6%
24M
8:29/mi
3:16:33
↓ 821.3%
40K· 24.85 mi
8:28/mi
3:23:47
↓ 200.3%
25.2M
8:56/mi
3:26:52
↑ 13↓ 160.2%
Finish· 26.22 mi
8:12/mi
3:35:13
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:45:49
Pace8:04 /mi
2nd Half
Distance13.11 mi
Time1:49:24
Pace8:21 /mi
📊Positive Split: 3.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:17:1525:328:1325:32
8:13
-
10K
6.21 mi11:42:0550:228:0624:50
8:00
-0:13
15K
9.32 mi12:07:011:15:188:0524:56
8:02
+0:02
20K
12.43 mi12:32:021:40:198:0425:01
8:03
+0:01
Half
13.11 mi12:37:321:45:498:045:30
8:04
+0:01
25K
15.53 mi12:57:062:05:238:0419:34
8:04
0:00
30K
18.64 mi13:22:392:30:568:0625:33
8:13
+0:09
20M
20.00 mi13:33:582:42:158:0711:19
8:20
+0:07
21M
21.00 mi13:42:232:50:408:088:25
8:25
+0:05
35K
21.75 mi13:48:412:56:588:086:18
8:25
0:00
23M
23.00 mi13:59:473:08:048:1111:06
8:52
+0:27
24M
24.00 mi14:08:163:16:338:118:29
8:29
-0:23
40K
24.85 mi14:15:303:23:478:127:14
8:28
-0:01
25.2M
25.20 mi14:18:353:26:528:133:05
8:56
+0:28
Finish
26.22 mi14:26:563:35:138:138:21
8:12
-0:44

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

8:00 /mi

Average Pace

8:13 /mi

Slowest Pace

8:56 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:21:02

93% of race

Time at Steady Pace

14:11

7% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:12 /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 mi11:17:1525:328:1325:32
8:13
#15586
10K
6.21 mi11:42:0550:228:0624:50
8:00
#15156
15K
9.32 mi12:07:011:15:188:0524:56
8:02
#14975
20K
12.43 mi12:32:021:40:198:0425:01
8:03
#14666
Half
13.11 mi12:37:321:45:498:045:30
8:04
#14658
25K
15.53 mi12:57:062:05:238:0419:34
8:04
#14440
30K
18.64 mi13:22:392:30:568:0625:33
8:13
#14084
20M
20.00 mi13:33:582:42:158:0711:19
8:20
#13928
21M
21.00 mi13:42:232:50:408:088:25
8:25
#13665
35K
21.75 mi13:48:412:56:588:086:18
8:25
#13694
23M
23.00 mi13:59:473:08:048:1111:06
8:52
#13782
24M
24.00 mi14:08:163:16:338:118:29
8:29
#13799
40K
24.85 mi14:15:303:23:478:127:14
8:28
#13761
25.2M
25.20 mi14:18:353:26:528:133:05
8:56
#13729
Finish
26.22 mi14:26:563:35:138:138:21
8:12
#13693
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi15586105391053914575(Top 55%)10127(Top 67%)10127(Top 712%)
10K6.21 mi3.10 mi15156+43010388+15110388+15114746(Top 55%)10219(Top 67%)10219(Top 719%)
15K9.32 mi3.11 mi14975+18110309+7910309+7914575(Top 55%)10127(Top 67%)10127(Top 712%)
20K12.43 mi3.11 mi14666+30910176+13310176+13313839(Top 52%)9813(Top 65%)9813(Top 690%)
Half13.11 mi0.68 mi14658+810172+410172+414783(Top 56%)10200(Top 67%)10200(Top 717%)
25K15.53 mi2.42 mi14440+21810053+11910053+11913298(Top 50%)9478(Top 62%)9478(Top 667%)
30K18.64 mi3.11 mi14084+3569871+1829871+18212494(Top 47%)9019(Top 59%)9019(Top 634%)
20M20.00 mi1.36 mi13928+1569797+749797+7412526(Top 47%)8919(Top 59%)8919(Top 627%)
21M21.00 mi1.00 mi13665+2639678+1199678+1199964(Top 37%)7593(Top 50%)7593(Top 534%)
35K21.75 mi0.75 mi13694-299674+49674+414811(Top 56%)9791(Top 65%)9791(Top 689%)
23M23.00 mi1.25 mi13782-889676-29676-215331(Top 58%)9947(Top 66%)9947(Top 700%)
24M24.00 mi1.00 mi13799-179645+319645+3114365(Top 54%)9469(Top 62%)9469(Top 666%)
40K24.85 mi0.85 mi13761+389624+219624+2113057(Top 49%)8806(Top 58%)8806(Top 619%)
25.2M25.20 mi0.35 mi13729+329604+209604+2012139(Top 46%)8333(Top 55%)8333(Top 586%)
Finish26.22 mi1.02 mi13693+369568+369568+3613376(Top 50%)8961(Top 59%)8961(Top 630%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 55%
×21story building
+97ft-345ft

Overall

14575

Males

10127

M55-59

10127

5K→10K

3.1 - 6.2 mi

Top 55%
×5story building
+79ft-138ft

Overall

14746

Males

10219

M55-59

10219

10K→15K

6.2 - 9.3 mi

Top 55%
×3story building
+67ft-78ft

Overall

14575

Males

10127

M55-59

10127

15K→20K

9.3 - 12.4 mi

Top 52%
×5story building
+106ft-86ft

Overall

13839

Males

9813

M55-59

9813

20K→Half

12.4 - 13.1 mi

Top 56%
×2story building
+19ft-37ft

Overall

14783

Males

10200

M55-59

10200

Half→25K

13.1 - 15.5 mi

Top 50%
×4story building
+66ft-88ft

Overall

13298

Males

9478

M55-59

9478

25K→30K

15.5 - 18.6 mi

Top 47%
×9story building
+181ft-148ft

Overall

12494

Males

9019

M55-59

9019

30K→20M

18.6 - 20.0 mi

Top 47%
×5story building
+64ft-50ft

Overall

12526

Males

8919

M55-59

8919

20M→21M

20.0 - 21.0 mi

Top 37%
×8story building
+106ft-24ft

Overall

9964

Males

7593

M55-59

7593

21M→35K

21.0 - 21.8 mi

Top 56%
×7story building
+17ft-86ft

Overall

14811

Males

9791

M55-59

9791

35K→23M

21.8 - 23.0 mi

Top 58%
×5story building
+23ft-63ft

Overall

15331

Males

9947

M55-59

9947

23M→24M

23.0 - 24.0 mi

Top 54%
×6story building
+12ft-82ft

Overall

14365

Males

9469

M55-59

9469

24M→40K

24.0 - 24.9 mi

Top 49%
×1story
+6ft-20ft

Overall

13057

Males

8806

M55-59

8806

40K→25.2M

24.9 - 25.2 mi

Top 46%
×1story
+13ft-16ft

Overall

12139

Males

8333

M55-59

8333

25.2M→Finish

25.2 - 26.2 mi

Top 50%
×2story building
+22ft-21ft

Overall

13376

Males

8961

M55-59

8961

Passing Analysis

Category:
Athletes Passed
2738
Passed By
845
Net Change
+1893
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15586
5K → 10K582152+430#15586#15156
10K → 15K27897+181#15156#14975
15K → 20K35748+309#14975#14666
20K → Half3729+8#14666#14658
Half → 25K25840+218#14658#14440
25K → 30K39337+356#14440#14084
30K → 20M18226+156#14084#13928
20M → 21M2718+263#13928#13665
21M → 35K3867-29#13665#13694
35K → 23M63151-88#13694#13782
23M → 24M6683-17#13782#13799
24M → 40K7739+38#13799#13761
40K → 25.2M4917+32#13761#13729
25.2M → Finish8751+36#13729#13693
TOTALS2738845+1893
📊

Passing Visuals

Category:
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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