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BOSTON MARATHON 2023

Karl-Rudolf Erlemann

Bib: 11318•M

QC

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 34%
Gender (Male)
#0 / 15176
Top 49%
Masters (Masters Men)
#0 / 9891
Top 37%
Division (M45-49)
#0 / 2252
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:34
Rank: #10380
Start → 5K
23:34 | 7:35/mi
10K· 6.21 mi
47:05
Rank: #10699 (-319)
5K → 10K
23:31 | 7:34/mi
15K· 9.32 mi
1:10:23
Rank: #10504 (+195)
10K → 15K
23:18 | 7:30/mi
20K· 12.43 mi
1:33:58
Rank: #10358 (+146)
15K → 20K
23:35 | 7:35/mi
Half· 13.11 mi
1:39:05
Rank: #10349 (+9)
20K → Half
5:07 | 7:30/mi
25K· 15.53 mi
1:57:38
Rank: #10246 (+103)
Half → 25K
18:33 | 7:39/mi
30K· 18.64 mi
2:22:07
Rank: #10159 (+87)
25K → 30K
24:29 | 7:53/mi
20M
2:32:34
Rank: #9958 (+201)
30K → 20M
10:27 | 7:41/mi
21M
2:40:39
Rank: #9800 (+158)
20M → 21M
8:05 | 8:05/mi
35K· 21.75 mi
2:46:11
Rank: #9720 (+80)
21M → 35K
5:32 | 7:24/mi
23M
2:55:55
Rank: #9595 (+125)
35K → 23M
9:44 | 7:46/mi
24M
3:03:16
Rank: #9450 (+145)
23M → 24M
7:21 | 7:21/mi
40K· 24.85 mi
3:09:39
Rank: #9287 (+163)
24M → 40K
6:23 | 7:28/mi
25.2M
3:12:18
Rank: #9195 (+92)
40K → 25.2M
2:39 | 7:41/mi
Finish· 26.22 mi
3:19:31
Rank: #9054 (+141)
25.2M → Finish
7:13 | 7:05/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:39:05
Pace7:33 /mi
2nd Half
Distance13.11 mi
Time1:40:26
Pace7:40 /mi
📊Positive Split: 1.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:50:5223:347:3523:34
7:35
-
10K
6.21 mi11:14:2347:057:3523:31
7:34
-0:01
15K
9.32 mi11:37:411:10:237:3323:18
7:30
-0:04
20K
12.43 mi12:01:161:33:587:3423:35
7:35
+0:05
Half
13.11 mi12:06:231:39:057:335:07
7:30
-0:05
25K
15.53 mi12:24:561:57:387:3418:33
7:39
+0:09
30K
18.64 mi12:49:252:22:077:3724:29
7:53
+0:14
20M
20.00 mi12:59:522:32:347:3810:27
7:41
-0:12
21M
21.00 mi13:07:572:40:397:398:05
8:05
+0:24
35K
21.75 mi13:13:292:46:117:385:32
7:24
-0:41
23M
23.00 mi13:23:132:55:557:399:44
7:46
+0:22
24M
24.00 mi13:30:343:03:167:387:21
7:21
-0:25
40K
24.85 mi13:36:573:09:397:386:23
7:28
+0:07
25.2M
25.20 mi13:39:363:12:187:382:39
7:41
+0:13
Finish
26.22 mi13:46:493:19:317:377:13
7:05
-0:36

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

7:05 /mi

Average Pace

7:37 /mi

Slowest Pace

8:05 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:46:57

84% of race

Time at Steady Pace

32:34

16% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:37 /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 mi10:50:5223:347:3523:34
7:35
#10380
10K
6.21 mi11:14:2347:057:3523:31
7:34
#10699
15K
9.32 mi11:37:411:10:237:3323:18
7:30
#10504
20K
12.43 mi12:01:161:33:587:3423:35
7:35
#10358
Half
13.11 mi12:06:231:39:057:335:07
7:30
#10349
25K
15.53 mi12:24:561:57:387:3418:33
7:39
#10246
30K
18.64 mi12:49:252:22:077:3724:29
7:53
#10159
20M
20.00 mi12:59:522:32:347:3810:27
7:41
#9958
21M
21.00 mi13:07:572:40:397:398:05
8:05
#9800
35K
21.75 mi13:13:292:46:117:385:32
7:24
#9720
23M
23.00 mi13:23:132:55:557:399:44
7:46
#9595
24M
24.00 mi13:30:343:03:167:387:21
7:21
#9450
40K
24.85 mi13:36:573:09:397:386:23
7:28
#9287
25.2M
25.20 mi13:39:363:12:187:382:39
7:41
#9195
Finish
26.22 mi13:46:493:19:317:377:13
7:05
#9054
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi103808339833910158(Top 38%)8227(Top 54%)8227(Top 365%)
10K6.21 mi3.10 mi10699-3198510-1718510-17111024(Top 41%)8684(Top 57%)8684(Top 386%)
15K9.32 mi3.11 mi10504+1958424+868424+8610158(Top 38%)8227(Top 54%)8227(Top 365%)
20K12.43 mi3.11 mi10358+1468347+778347+7710003(Top 38%)8071(Top 53%)8071(Top 358%)
Half13.11 mi0.68 mi10349+98334+138334+1310160(Top 38%)8172(Top 54%)8172(Top 363%)
25K15.53 mi2.42 mi10246+1038260+748260+749897(Top 37%)7922(Top 52%)7922(Top 352%)
30K18.64 mi3.11 mi10159+878173+878173+879967(Top 37%)7805(Top 51%)7805(Top 347%)
20M20.00 mi1.36 mi9958+2018045+1288045+1288099(Top 30%)6659(Top 44%)6659(Top 296%)
21M21.00 mi1.00 mi9800+1587934+1117934+1117891(Top 30%)6421(Top 42%)6421(Top 285%)
35K21.75 mi0.75 mi9720+807872+627872+627765(Top 29%)6361(Top 42%)6361(Top 282%)
23M23.00 mi1.25 mi9595+1257765+1077765+1078216(Top 31%)6534(Top 43%)6534(Top 290%)
24M24.00 mi1.00 mi9450+1457662+1037662+1036728(Top 25%)5567(Top 37%)5567(Top 247%)
40K24.85 mi0.85 mi9287+1637536+1267536+1266503(Top 24%)5349(Top 35%)5349(Top 238%)
25.2M25.20 mi0.35 mi9195+927472+647472+644831(Top 18%)4184(Top 28%)4184(Top 186%)
Finish26.22 mi1.02 mi9054+1417369+1037369+1035726(Top 22%)4753(Top 31%)4753(Top 211%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 38%
×21stories
+97ft-345ft

Overall

10158

Males

8227

M45-49

8227

5K→10K

3.1 - 6.2 mi

Top 41%
×5stories
+79ft-138ft

Overall

11024

Males

8684

M45-49

8684

10K→15K

6.2 - 9.3 mi

Top 38%
×3stories
+67ft-78ft

Overall

10158

Males

8227

M45-49

8227

15K→20K

9.3 - 12.4 mi

Top 38%
×5stories
+106ft-86ft

Overall

10003

Males

8071

M45-49

8071

20K→Half

12.4 - 13.1 mi

Top 38%
×2stories
+19ft-37ft

Overall

10160

Males

8172

M45-49

8172

Half→25K

13.1 - 15.5 mi

Top 37%
×4stories
+66ft-88ft

Overall

9897

Males

7922

M45-49

7922

25K→30K

15.5 - 18.6 mi

Top 37%
×9stories
+181ft-148ft

Overall

9967

Males

7805

M45-49

7805

30K→20M

18.6 - 20.0 mi

Top 30%
×5stories
+64ft-50ft

Overall

8099

Males

6659

M45-49

6659

20M→21M

20.0 - 21.0 mi

Top 30%
×8stories
+106ft-24ft

Overall

7891

Males

6421

M45-49

6421

21M→35K

21.0 - 21.8 mi

Top 29%
×7stories
+17ft-86ft

Overall

7765

Males

6361

M45-49

6361

35K→23M

21.8 - 23.0 mi

Top 31%
×5stories
+23ft-63ft

Overall

8216

Males

6534

M45-49

6534

23M→24M

23.0 - 24.0 mi

Top 25%
×6stories
+12ft-82ft

Overall

6728

Males

5567

M45-49

5567

24M→40K

24.0 - 24.9 mi

Top 24%
×1story
+6ft-20ft

Overall

6503

Males

5349

M45-49

5349

40K→25.2M

24.9 - 25.2 mi

Top 18%
×1story
+13ft-16ft

Overall

4831

Males

4184

M45-49

4184

25.2M→Finish

25.2 - 26.2 mi

Top 22%
×2stories
+22ft-21ft

Overall

5726

Males

4753

M45-49

4753

Passing Analysis

Category:
Athletes Passed
2300*
Passed By
974
Net Change
+1326
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10380
5K → 10K169488-319#10380#10699
10K → 15K302107+195#10699#10504
15K → 20K21872+146#10504#10358
20K → Half3425+9#10358#10349
Half → 25K18481+103#10349#10246
25K → 30K197*110+87#10246#10159
30K → 20M212*11+201#10159#9958
20M → 21M17517+158#9958#9800
21M → 35K877+80#9800#9720
35K → 23M15732+125#9720#9595
23M → 24M1549+145#9595#9450
24M → 40K171*8+163#9450#9287
40K → 25.2M920+92#9287#9195
25.2M → Finish1487+141#9195#9054
TOTALS2300*974+1326

* 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