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BOSTON MARATHON 2023

Justin Walker

Bib: 7263•M

MI

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 12%
Gender (Male)
#0 / 15176
Top 20%
Masters (Masters Men)
#0 / 9891
Top 8%
Division (M40-44)
#0 / 2241
Top 21%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:12
Rank: #4876
Start → 5K
21:12 | 6:49/mi
10K· 6.21 mi
42:26
Rank: #5197 (-321)
5K → 10K
21:14 | 6:50/mi
15K· 9.32 mi
1:03:11
Rank: #4783 (+414)
10K → 15K
20:45 | 6:41/mi
20K· 12.43 mi
1:23:56
Rank: #4378 (+405)
15K → 20K
20:45 | 6:41/mi
Half· 13.11 mi
1:28:29
Rank: #4359 (+19)
20K → Half
4:33 | 6:40/mi
25K· 15.53 mi
1:44:55
Rank: #4251 (+108)
Half → 25K
16:26 | 6:47/mi
30K· 18.64 mi
2:06:07
Rank: #3992 (+259)
25K → 30K
21:12 | 6:49/mi
20M
2:15:18
Rank: #3818 (+174)
30K → 20M
9:11 | 6:45/mi
21M
2:22:20
Rank: #3678 (+140)
20M → 21M
7:02 | 7:02/mi
35K· 21.75 mi
2:27:16
Rank: #3634 (+44)
21M → 35K
4:56 | 6:36/mi
23M
2:35:47
Rank: #3512 (+122)
35K → 23M
8:31 | 6:48/mi
24M
2:42:22
Rank: #3446 (+66)
23M → 24M
6:35 | 6:35/mi
40K· 24.85 mi
2:48:06
Rank: #3369 (+77)
24M → 40K
5:44 | 6:42/mi
25.2M
2:50:36
Rank: #3333 (+36)
40K → 25.2M
2:30 | 7:15/mi
Finish· 26.22 mi
2:57:11
Rank: #3242 (+91)
25.2M → Finish
6:35 | 6:28/mi

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:28:29
Pace6:45 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:28:42
Pace6:46 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:25:1721:126:4921:12
6:49
-
10K
6.21 mi10:46:3142:266:5021:14
6:50
+0:01
15K
9.32 mi11:07:161:03:116:4720:45
6:41
-0:09
20K
12.43 mi11:28:011:23:566:4520:45
6:41
0:00
Half
13.11 mi11:32:341:28:296:454:33
6:40
-0:01
25K
15.53 mi11:49:001:44:556:4516:26
6:47
+0:07
30K
18.64 mi12:10:122:06:076:4621:12
6:49
+0:02
20M
20.00 mi12:19:232:15:186:469:11
6:45
-0:04
21M
21.00 mi12:26:252:22:206:477:02
7:02
+0:17
35K
21.75 mi12:31:212:27:166:464:56
6:36
-0:26
23M
23.00 mi12:39:522:35:476:468:31
6:48
+0:12
24M
24.00 mi12:46:272:42:226:466:35
6:35
-0:13
40K
24.85 mi12:52:112:48:066:465:44
6:42
+0:07
25.2M
25.20 mi12:54:412:50:366:462:30
7:15
+0:33
Finish
26.22 mi13:01:162:57:116:466:35
6:28
-0:47

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

6:28 /mi

Average Pace

6:46 /mi

Slowest Pace

7:15 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:54:41

99% of race

Time at Steady Pace

2:30

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:45 /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 mi10:25:1721:126:4921:12
6:49
#4876
10K
6.21 mi10:46:3142:266:5021:14
6:50
#5197
15K
9.32 mi11:07:161:03:116:4720:45
6:41
#4783
20K
12.43 mi11:28:011:23:566:4520:45
6:41
#4378
Half
13.11 mi11:32:341:28:296:454:33
6:40
#4359
25K
15.53 mi11:49:001:44:556:4516:26
6:47
#4251
30K
18.64 mi12:10:122:06:076:4621:12
6:49
#3992
20M
20.00 mi12:19:232:15:186:469:11
6:45
#3818
21M
21.00 mi12:26:252:22:206:477:02
7:02
#3678
35K
21.75 mi12:31:212:27:166:464:56
6:36
#3634
23M
23.00 mi12:39:522:35:476:468:31
6:48
#3512
24M
24.00 mi12:46:272:42:226:466:35
6:35
#3446
40K
24.85 mi12:52:112:48:066:465:44
6:42
#3369
25.2M
25.20 mi12:54:412:50:366:462:30
7:15
#3333
Finish
26.22 mi13:01:162:57:116:466:35
6:28
#3242
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi4876453145313913(Top 15%)3677(Top 24%)3677(Top 164%)
10K6.21 mi3.10 mi5197-3214812-2814812-2815589(Top 21%)5131(Top 34%)5131(Top 229%)
15K9.32 mi3.11 mi4783+4144450+3624450+3623913(Top 15%)3677(Top 24%)3677(Top 164%)
20K12.43 mi3.11 mi4378+4054097+3534097+3533403(Top 13%)3226(Top 21%)3226(Top 144%)
Half13.11 mi0.68 mi4359+194080+174080+173980(Top 15%)3732(Top 25%)3732(Top 167%)
25K15.53 mi2.42 mi4251+1083985+953985+953930(Top 15%)3691(Top 24%)3691(Top 165%)
30K18.64 mi3.11 mi3992+2593758+2273758+2273140(Top 12%)2960(Top 20%)2960(Top 132%)
20M20.00 mi1.36 mi3818+1743599+1593599+1592584(Top 10%)2451(Top 16%)2451(Top 109%)
21M21.00 mi1.00 mi3678+1403474+1253474+1252317(Top 9%)2190(Top 14%)2190(Top 98%)
35K21.75 mi0.75 mi3634+443432+423432+422974(Top 11%)2785(Top 18%)2785(Top 124%)
23M23.00 mi1.25 mi3512+1223320+1123320+1122677(Top 10%)2510(Top 17%)2510(Top 112%)
24M24.00 mi1.00 mi3446+663257+633257+632481(Top 9%)2317(Top 15%)2317(Top 103%)
40K24.85 mi0.85 mi3369+773185+723185+722380(Top 9%)2210(Top 15%)2210(Top 99%)
25.2M25.20 mi0.35 mi3333+363152+333152+332715(Top 10%)2501(Top 16%)2501(Top 112%)
Finish26.22 mi1.02 mi3242+913066+863066+862300(Top 9%)2128(Top 14%)2128(Top 95%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 15%
×21stories
+97ft-345ft

Overall

3913

Males

3677

M40-44

3677

5K→10K

3.1 - 6.2 mi

Top 21%
×5stories
+79ft-138ft

Overall

5589

Males

5131

M40-44

5131

10K→15K

6.2 - 9.3 mi

Top 15%
×3stories
+67ft-78ft

Overall

3913

Males

3677

M40-44

3677

15K→20K

9.3 - 12.4 mi

Top 13%
×5stories
+106ft-86ft

Overall

3403

Males

3226

M40-44

3226

20K→Half

12.4 - 13.1 mi

Top 15%
×2stories
+19ft-37ft

Overall

3980

Males

3732

M40-44

3732

Half→25K

13.1 - 15.5 mi

Top 15%
×4stories
+66ft-88ft

Overall

3930

Males

3691

M40-44

3691

25K→30K

15.5 - 18.6 mi

Top 12%
×9stories
+181ft-148ft

Overall

3140

Males

2960

M40-44

2960

30K→20M

18.6 - 20.0 mi

Top 10%
×5stories
+64ft-50ft

Overall

2584

Males

2451

M40-44

2451

20M→21M

20.0 - 21.0 mi

Top 9%
×8stories
+106ft-24ft

Overall

2317

Males

2190

M40-44

2190

21M→35K

21.0 - 21.8 mi

Top 11%
×7stories
+17ft-86ft

Overall

2974

Males

2785

M40-44

2785

35K→23M

21.8 - 23.0 mi

Top 10%
×5stories
+23ft-63ft

Overall

2677

Males

2510

M40-44

2510

23M→24M

23.0 - 24.0 mi

Top 9%
×6stories
+12ft-82ft

Overall

2481

Males

2317

M40-44

2317

24M→40K

24.0 - 24.9 mi

Top 9%
×1story
+6ft-20ft

Overall

2380

Males

2210

M40-44

2210

40K→25.2M

24.9 - 25.2 mi

Top 10%
×1story
+13ft-16ft

Overall

2715

Males

2501

M40-44

2501

25.2M→Finish

25.2 - 26.2 mi

Top 9%
×2stories
+22ft-21ft

Overall

2300

Males

2128

M40-44

2128

Passing Analysis

Category:
Athletes Passed
2194
Passed By
560
Net Change
+1634
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4876
5K → 10K90411-321#4876#5197
10K → 15K4228+414#5197#4783
15K → 20K4105+405#4783#4378
20K → Half289+19#4378#4359
Half → 25K14638+108#4359#4251
25K → 30K27213+259#4251#3992
30K → 20M1806+174#3992#3818
20M → 21M1499+140#3818#3678
21M → 35K5713+44#3678#3634
35K → 23M1319+122#3634#3512
23M → 24M7812+66#3512#3446
24M → 40K836+77#3446#3369
40K → 25.2M393+36#3369#3333
25.2M → Finish10918+91#3333#3242
TOTALS2194560+1634
📊

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