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BOSTON MARATHON 2023

Justin Dreitzler

Bib: 8486•M

CO

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 46%
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
21:20
Rank: #5295
Start → 5K
21:20 | 6:52/mi
10K· 6.21 mi
43:06
Rank: #6098 (-803)
5K → 10K
21:46 | 7:00/mi
15K· 9.32 mi
1:05:30
Rank: #6676 (-578)
10K → 15K
22:24 | 7:13/mi
20K· 12.43 mi
1:28:29
Rank: #7054 (-378)
15K → 20K
22:59 | 7:24/mi
Half· 13.11 mi
1:33:22
Rank: #7073 (-19)
20K → Half
4:53 | 7:09/mi
25K· 15.53 mi
1:51:32
Rank: #7251 (-178)
Half → 25K
18:10 | 7:30/mi
30K· 18.64 mi
2:17:37
Rank: #8235 (-984)
25K → 30K
26:05 | 8:24/mi
20M
2:29:28
Rank: #8743 (-508)
30K → 20M
11:51 | 8:43/mi
21M
2:39:13
Rank: #9277 (-534)
20M → 21M
9:45 | 9:45/mi
35K· 21.75 mi
2:46:05
Rank: #9698 (-421)
21M → 35K
6:52 | 9:11/mi
23M
2:58:45
Rank: #10577 (-879)
35K → 23M
12:40 | 10:07/mi
24M
3:08:44
Rank: #11276 (-699)
23M → 24M
9:59 | 9:59/mi
40K· 24.85 mi
3:17:07
Rank: #11739 (-463)
24M → 40K
8:23 | 9:48/mi
25.2M
3:20:38
Rank: #11871 (-132)
40K → 25.2M
3:31 | 10:12/mi
Finish· 26.22 mi
3:29:48
Rank: #12193 (-322)
25.2M → Finish
9:10 | 9:00/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:33:22
Pace7:07 /mi
2nd Half
Distance13.11 mi
Time1:56:26
Pace8:53 /mi
📊Positive Split: 24.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:46:3121:206:5221:20
6:52
-
10K
6.21 mi11:08:1743:066:5621:46
7:00
+0:08
15K
9.32 mi11:30:411:05:307:0222:24
7:13
+0:13
20K
12.43 mi11:53:401:28:297:0722:59
7:24
+0:11
Half
13.11 mi11:58:331:33:227:074:53
7:09
-0:15
25K
15.53 mi12:16:431:51:327:1118:10
7:30
+0:21
30K
18.64 mi12:42:482:17:377:2326:05
8:24
+0:54
20M
20.00 mi12:54:392:29:287:2811:51
8:43
+0:19
21M
21.00 mi13:04:242:39:137:359:45
9:45
+1:02
35K
21.75 mi13:11:162:46:057:386:52
9:11
-0:34
23M
23.00 mi13:23:562:58:457:4612:40
10:07
+0:56
24M
24.00 mi13:33:553:08:447:529:59
9:59
-0:08
40K
24.85 mi13:42:183:17:077:568:23
9:48
-0:11
25.2M
25.20 mi13:45:493:20:387:583:31
10:12
+0:24
Finish
26.22 mi13:54:593:29:488:009:10
9:00
-1:12

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

6:52 /mi

Average Pace

8:00 /mi

Slowest Pace

10:12 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:51:32

53% of race

Time at Steady Pace

53:58

26% of race

Time at Slower Pace

44:18

21% of race

Average Pace: 8:00 /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 mi10:46:3121:206:5221:20
6:52
#5295
10K
6.21 mi11:08:1743:066:5621:46
7:00
#6098
15K
9.32 mi11:30:411:05:307:0222:24
7:13
#6676
20K
12.43 mi11:53:401:28:297:0722:59
7:24
#7054
Half
13.11 mi11:58:331:33:227:074:53
7:09
#7073
25K
15.53 mi12:16:431:51:327:1118:10
7:30
#7251
30K
18.64 mi12:42:482:17:377:2326:05
8:24
#8235
20M
20.00 mi12:54:392:29:287:2811:51
8:43
#8743
21M
21.00 mi13:04:242:39:137:359:45
9:45
#9277
35K
21.75 mi13:11:162:46:057:386:52
9:11
#9698
23M
23.00 mi13:23:562:58:457:4612:40
10:07
#10577
24M
24.00 mi13:33:553:08:447:529:59
9:59
#11276
40K
24.85 mi13:42:183:17:077:568:23
9:48
#11739
25.2M
25.20 mi13:45:493:20:387:583:31
10:12
#11871
Finish
26.22 mi13:54:593:29:488:009:10
9:00
#12193
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi5295490249027865(Top 30%)6834(Top 45%)6834(Top 129%)
10K6.21 mi3.10 mi6098-8035560-6585560-6586865(Top 26%)6140(Top 40%)6140(Top 116%)
15K9.32 mi3.11 mi6676-5786014-4546014-4547865(Top 30%)6834(Top 45%)6834(Top 129%)
20K12.43 mi3.11 mi7054-3786288-2746288-2748498(Top 32%)7197(Top 47%)7197(Top 136%)
Half13.11 mi0.68 mi7073-196301-136301-137588(Top 29%)6647(Top 44%)6647(Top 126%)
25K15.53 mi2.42 mi7251-1786420-1196420-1198735(Top 33%)7289(Top 48%)7289(Top 138%)
30K18.64 mi3.11 mi8235-9847023-6037023-60313658(Top 51%)9510(Top 63%)9510(Top 180%)
20M20.00 mi1.36 mi8743-5087327-3047327-30414952(Top 56%)9962(Top 66%)9962(Top 188%)
21M21.00 mi1.00 mi9277-5347617-2907617-29017025(Top 64%)10792(Top 71%)10792(Top 204%)
35K21.75 mi0.75 mi9698-4217865-2487865-24818620(Top 70%)11413(Top 75%)11413(Top 216%)
23M23.00 mi1.25 mi10577-8798269-4048269-40420321(Top 76%)12153(Top 80%)12153(Top 230%)
24M24.00 mi1.00 mi11276-6998596-3278596-32720726(Top 78%)12299(Top 81%)12299(Top 233%)
40K24.85 mi0.85 mi11739-4638780-1848780-18419387(Top 73%)11655(Top 77%)11655(Top 221%)
25.2M25.20 mi0.35 mi11871-1328824-448824-4418047(Top 68%)11030(Top 73%)11030(Top 209%)
Finish26.22 mi1.02 mi12193-3228944-1208944-12017931(Top 67%)11027(Top 73%)11027(Top 209%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 30%
×21stories
+97ft-345ft

Overall

7865

Males

6834

M18-39

6834

5K→10K

3.1 - 6.2 mi

Top 26%
×5stories
+79ft-138ft

Overall

6865

Males

6140

M18-39

6140

10K→15K

6.2 - 9.3 mi

Top 30%
×3stories
+67ft-78ft

Overall

7865

Males

6834

M18-39

6834

15K→20K

9.3 - 12.4 mi

Top 32%
×5stories
+106ft-86ft

Overall

8498

Males

7197

M18-39

7197

20K→Half

12.4 - 13.1 mi

Top 29%
×2stories
+19ft-37ft

Overall

7588

Males

6647

M18-39

6647

Half→25K

13.1 - 15.5 mi

Top 33%
×4stories
+66ft-88ft

Overall

8735

Males

7289

M18-39

7289

25K→30K

15.5 - 18.6 mi

Top 51%
×9stories
+181ft-148ft

Overall

13658

Males

9510

M18-39

9510

30K→20M

18.6 - 20.0 mi

Top 56%
×5stories
+64ft-50ft

Overall

14952

Males

9962

M18-39

9962

20M→21M

20.0 - 21.0 mi

Top 64%
×8stories
+106ft-24ft

Overall

17025

Males

10792

M18-39

10792

21M→35K

21.0 - 21.8 mi

Top 70%
×7stories
+17ft-86ft

Overall

18620

Males

11413

M18-39

11413

35K→23M

21.8 - 23.0 mi

Top 76%
×5stories
+23ft-63ft

Overall

20321

Males

12153

M18-39

12153

23M→24M

23.0 - 24.0 mi

Top 78%
×6stories
+12ft-82ft

Overall

20726

Males

12299

M18-39

12299

24M→40K

24.0 - 24.9 mi

Top 73%
×1story
+6ft-20ft

Overall

19387

Males

11655

M18-39

11655

40K→25.2M

24.9 - 25.2 mi

Top 68%
×1story
+13ft-16ft

Overall

18047

Males

11030

M18-39

11030

25.2M→Finish

25.2 - 26.2 mi

Top 67%
×2stories
+22ft-21ft

Overall

17931

Males

11027

M18-39

11027

Passing Analysis

Category:
Athletes Passed
207
Passed By
7103
Net Change
-6898
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5295
5K → 10K20823-803#5295#6098
10K → 15K18596-578#6098#6676
15K → 20K26404-378#6676#7054
20K → Half827-19#7054#7073
Half → 25K41219-178#7073#7251
25K → 30K15999-984#7251#8235
30K → 20M17525-508#8235#8743
20M → 21M11545-534#8743#9277
21M → 35K3424-421#9277#9698
35K → 23M8885-879#9698#10577
23M → 24M6705-699#10577#11276
24M → 40K11474-463#11276#11739
40K → 25.2M4136-132#11739#11871
25.2M → Finish19341-322#11871#12193
TOTALS2077103-6898
📊

Passing Visuals

Category:

📈Position Graph

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🎨Heatmap Timeline

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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