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BOSTON MARATHON 2023

Derek Loseke

Bib: 4325•M

NE

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 9%
Gender (Male)
#0 / 15176
Top 15%
Division (M18-39)
#0 / 5285
Top 34%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:47
Rank: #3561
Start → 5K
20:47 | 6:41/mi
10K· 6.21 mi
41:11
Rank: #3361 (+200)
5K → 10K
20:24 | 6:34/mi
15K· 9.32 mi
1:01:37
Rank: #3268 (+93)
10K → 15K
20:26 | 6:35/mi
20K· 12.43 mi
1:22:03
Rank: #3093 (+175)
15K → 20K
20:26 | 6:35/mi
Half· 13.11 mi
1:26:32
Rank: #3097 (-4)
20K → Half
4:29 | 6:34/mi
25K· 15.53 mi
1:42:39
Rank: #3050 (+47)
Half → 25K
16:07 | 6:39/mi
30K· 18.64 mi
2:03:47
Rank: #2975 (+75)
25K → 30K
21:08 | 6:48/mi
20M
2:13:02
Rank: #2939 (+36)
30K → 20M
9:15 | 6:48/mi
21M
2:20:00
Rank: #2854 (+85)
20M → 21M
6:58 | 6:58/mi
35K· 21.75 mi
2:24:51
Rank: #2820 (+34)
21M → 35K
4:51 | 6:29/mi
23M
2:33:08
Rank: #2714 (+106)
35K → 23M
8:17 | 6:37/mi
24M
2:39:30
Rank: #2605 (+109)
23M → 24M
6:22 | 6:22/mi
40K· 24.85 mi
2:45:01
Rank: #2525 (+80)
24M → 40K
5:31 | 6:27/mi
25.2M
2:47:24
Rank: #2492 (+33)
40K → 25.2M
2:23 | 6:55/mi
Finish· 26.22 mi
2:53:38
Rank: #2397 (+95)
25.2M → Finish
6:14 | 6:07/mi

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:26:32
Pace6:36 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:27:06
Pace6:39 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:22:5820:476:4120:47
6:41
-
10K
6.21 mi10:43:2241:116:3820:24
6:34
-0:07
15K
9.32 mi11:03:481:01:376:3720:26
6:35
+0:01
20K
12.43 mi11:24:141:22:036:3620:26
6:35
0:00
Half
13.11 mi11:28:431:26:326:364:29
6:34
-0:01
25K
15.53 mi11:44:501:42:396:3616:07
6:39
+0:05
30K
18.64 mi12:05:582:03:476:3821:08
6:48
+0:09
20M
20.00 mi12:15:132:13:026:399:15
6:48
0:00
21M
21.00 mi12:22:112:20:006:406:58
6:58
+0:10
35K
21.75 mi12:27:022:24:516:404:51
6:29
-0:29
23M
23.00 mi12:35:192:33:086:398:17
6:37
+0:08
24M
24.00 mi12:41:412:39:306:396:22
6:22
-0:15
40K
24.85 mi12:47:122:45:016:385:31
6:27
+0:05
25.2M
25.20 mi12:49:352:47:246:392:23
6:55
+0:28
Finish
26.22 mi12:55:492:53:386:386:14
6:07
-0:48

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

6:07 /mi

Average Pace

6:38 /mi

Slowest Pace

6:58 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:13:54

77% of race

Time at Steady Pace

39:44

23% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:37 /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 mi10:22:5820:476:4120:47
6:41
#3561
10K
6.21 mi10:43:2241:116:3820:24
6:34
#3361
15K
9.32 mi11:03:481:01:376:3720:26
6:35
#3268
20K
12.43 mi11:24:141:22:036:3620:26
6:35
#3093
Half
13.11 mi11:28:431:26:326:364:29
6:34
#3097
25K
15.53 mi11:44:501:42:396:3616:07
6:39
#3050
30K
18.64 mi12:05:582:03:476:3821:08
6:48
#2975
20M
20.00 mi12:15:132:13:026:399:15
6:48
#2939
21M
21.00 mi12:22:112:20:006:406:58
6:58
#2854
35K
21.75 mi12:27:022:24:516:404:51
6:29
#2820
23M
23.00 mi12:35:192:33:086:398:17
6:37
#2714
24M
24.00 mi12:41:412:39:306:396:22
6:22
#2605
40K
24.85 mi12:47:122:45:016:385:31
6:27
#2525
25.2M
25.20 mi12:49:352:47:246:392:23
6:55
#2492
Finish
26.22 mi12:55:492:53:386:386:14
6:07
#2397
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi3561335433543094(Top 12%)2948(Top 19%)2948(Top 56%)
10K6.21 mi3.10 mi3361+2003180+1743180+1743228(Top 12%)3074(Top 20%)3074(Top 58%)
15K9.32 mi3.11 mi3268+933106+743106+743094(Top 12%)2948(Top 19%)2948(Top 56%)
20K12.43 mi3.11 mi3093+1752949+1572949+1572694(Top 10%)2576(Top 17%)2576(Top 49%)
Half13.11 mi0.68 mi3097-42951-22951-23177(Top 12%)3027(Top 20%)3027(Top 57%)
25K15.53 mi2.42 mi3050+472908+432908+432967(Top 11%)2827(Top 19%)2827(Top 53%)
30K18.64 mi3.11 mi2975+752838+702838+702986(Top 11%)2824(Top 19%)2824(Top 53%)
20M20.00 mi1.36 mi2939+362805+332805+332835(Top 11%)2670(Top 18%)2670(Top 51%)
21M21.00 mi1.00 mi2854+852728+772728+772004(Top 8%)1899(Top 13%)1899(Top 36%)
35K21.75 mi0.75 mi2820+342695+332695+332327(Top 9%)2207(Top 15%)2207(Top 42%)
23M23.00 mi1.25 mi2714+1062593+1022593+1021835(Top 7%)1739(Top 11%)1739(Top 33%)
24M24.00 mi1.00 mi2605+1092490+1032490+1031583(Top 6%)1499(Top 10%)1499(Top 28%)
40K24.85 mi0.85 mi2525+802411+792411+791402(Top 5%)1325(Top 9%)1325(Top 25%)
25.2M25.20 mi0.35 mi2492+332378+332378+331487(Top 6%)1404(Top 9%)1404(Top 27%)
Finish26.22 mi1.02 mi2397+952288+902288+901046(Top 4%)995(Top 7%)995(Top 19%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 12%
×21stories
+97ft-345ft

Overall

3094

Males

2948

M18-39

2948

5K→10K

3.1 - 6.2 mi

Top 12%
×5stories
+79ft-138ft

Overall

3228

Males

3074

M18-39

3074

10K→15K

6.2 - 9.3 mi

Top 12%
×3stories
+67ft-78ft

Overall

3094

Males

2948

M18-39

2948

15K→20K

9.3 - 12.4 mi

Top 10%
×5stories
+106ft-86ft

Overall

2694

Males

2576

M18-39

2576

20K→Half

12.4 - 13.1 mi

Top 12%
×2stories
+19ft-37ft

Overall

3177

Males

3027

M18-39

3027

Half→25K

13.1 - 15.5 mi

Top 11%
×4stories
+66ft-88ft

Overall

2967

Males

2827

M18-39

2827

25K→30K

15.5 - 18.6 mi

Top 11%
×9stories
+181ft-148ft

Overall

2986

Males

2824

M18-39

2824

30K→20M

18.6 - 20.0 mi

Top 11%
×5stories
+64ft-50ft

Overall

2835

Males

2670

M18-39

2670

20M→21M

20.0 - 21.0 mi

Top 8%
×8stories
+106ft-24ft

Overall

2004

Males

1899

M18-39

1899

21M→35K

21.0 - 21.8 mi

Top 9%
×7stories
+17ft-86ft

Overall

2327

Males

2207

M18-39

2207

35K→23M

21.8 - 23.0 mi

Top 7%
×5stories
+23ft-63ft

Overall

1835

Males

1739

M18-39

1739

23M→24M

23.0 - 24.0 mi

Top 6%
×6stories
+12ft-82ft

Overall

1583

Males

1499

M18-39

1499

24M→40K

24.0 - 24.9 mi

Top 5%
×1story
+6ft-20ft

Overall

1402

Males

1325

M18-39

1325

40K→25.2M

24.9 - 25.2 mi

Top 6%
×1story
+13ft-16ft

Overall

1487

Males

1404

M18-39

1404

25.2M→Finish

25.2 - 26.2 mi

Top 4%
×2stories
+22ft-21ft

Overall

1046

Males

995

M18-39

995

Passing Analysis

Category:
Athletes Passed
1509
Passed By
345
Net Change
+1164
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3561
5K → 10K28989+200#3561#3361
10K → 15K14956+93#3361#3268
15K → 20K19722+175#3268#3093
20K → Half1216-4#3093#3097
Half → 25K8336+47#3097#3050
25K → 30K12449+75#3050#2975
30K → 20M6024+36#2975#2939
20M → 21M938+85#2939#2854
21M → 35K4612+34#2854#2820
35K → 23M1159+106#2820#2714
23M → 24M1178+109#2714#2605
24M → 40K822+80#2605#2525
40K → 25.2M396+33#2525#2492
25.2M → Finish1038+95#2492#2397
TOTALS1509345+1164
📊

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