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BOSTON MARATHON 2023

Joseph Koerber

Bib: 3284•M

ND

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 18%
Gender (Male)
#0 / 15176
Top 29%
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
21:16
Rank: #5098
Start → 5K
21:16 | 6:51/mi
10K· 6.21 mi
42:31
Rank: #5335 (-237)
5K → 10K
21:15 | 6:50/mi
15K· 9.32 mi
1:03:45
Rank: #5357 (-22)
10K → 15K
21:14 | 6:50/mi
20K· 12.43 mi
1:25:12
Rank: #5384 (-27)
15K → 20K
21:27 | 6:54/mi
Half· 13.11 mi
1:29:53
Rank: #5398 (-14)
20K → Half
4:41 | 6:52/mi
25K· 15.53 mi
1:46:53
Rank: #5446 (-48)
Half → 25K
17:00 | 7:01/mi
30K· 18.64 mi
2:09:17
Rank: #5446
25K → 30K
22:24 | 7:13/mi
20M
2:19:05
Rank: #5382 (+64)
30K → 20M
9:48 | 7:13/mi
21M
2:26:44
Rank: #5332 (+50)
20M → 21M
7:39 | 7:39/mi
35K· 21.75 mi
2:31:49
Rank: #5266 (+66)
21M → 35K
5:05 | 6:48/mi
23M
2:40:36
Rank: #5124 (+142)
35K → 23M
8:47 | 7:01/mi
24M
2:47:21
Rank: #5000 (+124)
23M → 24M
6:45 | 6:45/mi
40K· 24.85 mi
2:53:12
Rank: #4892 (+108)
24M → 40K
5:51 | 6:51/mi
25.2M
2:55:40
Rank: #4832 (+60)
40K → 25.2M
2:28 | 7:09/mi
Finish· 26.22 mi
3:02:19
Rank: #4689 (+143)
25.2M → Finish
6:39 | 6:32/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:29:53
Pace6:51 /mi
2nd Half
Distance13.11 mi
Time1:32:26
Pace7:03 /mi
📊Positive Split: 2.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:22:3921:166:5121:16
6:51
-
10K
6.21 mi10:43:5442:316:5121:15
6:50
-0:01
15K
9.32 mi11:05:081:03:456:5021:14
6:50
0:00
20K
12.43 mi11:26:351:25:126:5121:27
6:54
+0:04
Half
13.11 mi11:31:161:29:536:514:41
6:52
-0:02
25K
15.53 mi11:48:161:46:536:5317:00
7:01
+0:09
30K
18.64 mi12:10:402:09:176:5622:24
7:13
+0:12
20M
20.00 mi12:20:282:19:056:579:48
7:13
0:00
21M
21.00 mi12:28:072:26:446:597:39
7:39
+0:26
35K
21.75 mi12:33:122:31:496:595:05
6:48
-0:51
23M
23.00 mi12:41:592:40:366:598:47
7:01
+0:13
24M
24.00 mi12:48:442:47:216:586:45
6:45
-0:16
40K
24.85 mi12:54:352:53:126:585:51
6:51
+0:06
25.2M
25.20 mi12:57:032:55:406:582:28
7:09
+0:18
Finish
26.22 mi13:03:423:02:196:586:39
6:32
-0:37

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

6:32 /mi

Average Pace

6:58 /mi

Slowest Pace

7:39 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:22:28

78% of race

Time at Steady Pace

39:51

22% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:57 /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 mi10:22:3921:166:5121:16
6:51
#5098
10K
6.21 mi10:43:5442:316:5121:15
6:50
#5335
15K
9.32 mi11:05:081:03:456:5021:14
6:50
#5357
20K
12.43 mi11:26:351:25:126:5121:27
6:54
#5384
Half
13.11 mi11:31:161:29:536:514:41
6:52
#5398
25K
15.53 mi11:48:161:46:536:5317:00
7:01
#5446
30K
18.64 mi12:10:402:09:176:5622:24
7:13
#5446
20M
20.00 mi12:20:282:19:056:579:48
7:13
#5382
21M
21.00 mi12:28:072:26:446:597:39
7:39
#5332
35K
21.75 mi12:33:122:31:496:595:05
6:48
#5266
23M
23.00 mi12:41:592:40:366:598:47
7:01
#5124
24M
24.00 mi12:48:442:47:216:586:45
6:45
#5000
40K
24.85 mi12:54:352:53:126:585:51
6:51
#4892
25.2M
25.20 mi12:57:032:55:406:582:28
7:09
#4832
Finish
26.22 mi13:03:423:02:196:586:39
6:32
#4689
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi5098472947295421(Top 20%)4998(Top 33%)4998(Top 95%)
10K6.21 mi3.10 mi5335-2374930-2014930-2015653(Top 21%)5187(Top 34%)5187(Top 98%)
15K9.32 mi3.11 mi5357-224955-254955-255421(Top 20%)4998(Top 33%)4998(Top 95%)
20K12.43 mi3.11 mi5384-274980-254980-255369(Top 20%)4957(Top 33%)4957(Top 94%)
Half13.11 mi0.68 mi5398-144989-94989-95710(Top 21%)5242(Top 35%)5242(Top 99%)
25K15.53 mi2.42 mi5446-485029-405029-405627(Top 21%)5159(Top 34%)5159(Top 98%)
30K18.64 mi3.11 mi54465024+55024+55545(Top 21%)5026(Top 33%)5026(Top 95%)
20M20.00 mi1.36 mi5382+644962+624962+625144(Top 19%)4651(Top 31%)4651(Top 88%)
21M21.00 mi1.00 mi5332+504908+544908+545335(Top 20%)4707(Top 31%)4707(Top 89%)
35K21.75 mi0.75 mi5266+664846+624846+624177(Top 16%)3827(Top 25%)3827(Top 72%)
23M23.00 mi1.25 mi5124+1424712+1344712+1343878(Top 15%)3575(Top 24%)3575(Top 68%)
24M24.00 mi1.00 mi5000+1244602+1104602+1103396(Top 13%)3133(Top 21%)3133(Top 59%)
40K24.85 mi0.85 mi4892+1084513+894513+893048(Top 11%)2806(Top 18%)2806(Top 53%)
25.2M25.20 mi0.35 mi4832+604457+564457+562385(Top 9%)2218(Top 15%)2218(Top 42%)
Finish26.22 mi1.02 mi4689+1434336+1214336+1212632(Top 10%)2418(Top 16%)2418(Top 46%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 20%
×21stories
+97ft-345ft

Overall

5421

Males

4998

M18-39

4998

5K→10K

3.1 - 6.2 mi

Top 21%
×5stories
+79ft-138ft

Overall

5653

Males

5187

M18-39

5187

10K→15K

6.2 - 9.3 mi

Top 20%
×3stories
+67ft-78ft

Overall

5421

Males

4998

M18-39

4998

15K→20K

9.3 - 12.4 mi

Top 20%
×5stories
+106ft-86ft

Overall

5369

Males

4957

M18-39

4957

20K→Half

12.4 - 13.1 mi

Top 21%
×2stories
+19ft-37ft

Overall

5710

Males

5242

M18-39

5242

Half→25K

13.1 - 15.5 mi

Top 21%
×4stories
+66ft-88ft

Overall

5627

Males

5159

M18-39

5159

25K→30K

15.5 - 18.6 mi

Top 21%
×9stories
+181ft-148ft

Overall

5545

Males

5026

M18-39

5026

30K→20M

18.6 - 20.0 mi

Top 19%
×5stories
+64ft-50ft

Overall

5144

Males

4651

M18-39

4651

20M→21M

20.0 - 21.0 mi

Top 20%
×8stories
+106ft-24ft

Overall

5335

Males

4707

M18-39

4707

21M→35K

21.0 - 21.8 mi

Top 16%
×7stories
+17ft-86ft

Overall

4177

Males

3827

M18-39

3827

35K→23M

21.8 - 23.0 mi

Top 15%
×5stories
+23ft-63ft

Overall

3878

Males

3575

M18-39

3575

23M→24M

23.0 - 24.0 mi

Top 13%
×6stories
+12ft-82ft

Overall

3396

Males

3133

M18-39

3133

24M→40K

24.0 - 24.9 mi

Top 11%
×1story
+6ft-20ft

Overall

3048

Males

2806

M18-39

2806

40K→25.2M

24.9 - 25.2 mi

Top 9%
×1story
+13ft-16ft

Overall

2385

Males

2218

M18-39

2218

25.2M→Finish

25.2 - 26.2 mi

Top 10%
×2stories
+22ft-21ft

Overall

2632

Males

2418

M18-39

2418

Passing Analysis

Category:
Athletes Passed
1371
Passed By
962
Net Change
+409
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5098
5K → 10K110347-237#5098#5335
10K → 15K99121-22#5335#5357
15K → 20K99126-27#5357#5384
20K → Half1529-14#5384#5398
Half → 25K73121-48#5398#5446
25K → 30K1311310#5446#5446
30K → 20M8723+64#5446#5382
20M → 21M8232+50#5382#5332
21M → 35K726+66#5332#5266
35K → 23M15513+142#5266#5124
23M → 24M1262+124#5124#5000
24M → 40K1157+108#5000#4892
40K → 25.2M600+60#4892#4832
25.2M → Finish1474+143#4832#4689
TOTALS1371962+409
📊

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