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BOSTON MARATHON 2023

Alexander Byers

Bib: 5956•M

NY

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 2%
Gender (Male)
#0 / 15176
Top 4%
Division (M18-39)
#0 / 5285
Top 9%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:17
Rank: #1145
Start → 5K
6:12/mi
19:17 split
10K· 6.21 mi
37:54
Rank: #965 (+180)
5K → 10K
6:00/mi
18:37 split
15K· 9.32 mi
56:39
Rank: #890 (+75)
10K → 15K
6:02/mi
18:45 split
20K· 12.43 mi
1:15:27
Rank: #826 (+64)
15K → 20K
6:03/mi
18:48 split
Half· 13.11 mi
1:19:30
Rank: #806 (+20)
20K → Half
5:56/mi
4:03 split
25K· 15.53 mi
1:34:00
Rank: #737 (+69)
Half → 25K
5:59/mi
14:30 split
30K· 18.64 mi
1:52:56
Rank: #689 (+48)
25K → 30K
6:06/mi
18:56 split
20M
2:01:09
Rank: #657 (+32)
30K → 20M
6:03/mi
8:13 split
21M
2:07:31
Rank: #637 (+20)
20M → 21M
6:22/mi
6:22 split
35K· 21.75 mi
2:11:56
Rank: #629 (+8)
21M → 35K
5:54/mi
4:25 split
23M
2:19:33
Rank: #608 (+21)
35K → 23M
6:05/mi
7:37 split
24M
2:25:32
Rank: #601 (+7)
23M → 24M
5:59/mi
5:59 split
40K· 24.85 mi
2:30:47
Rank: #592 (+9)
24M → 40K
6:08/mi
5:15 split
25.2M
2:33:04
Rank: #590 (+2)
40K → 25.2M
6:37/mi
2:17 split
Finish· 26.22 mi
2:39:26
Rank: #600 (-10)
25.2M → Finish
6:15/mi
6:22 split

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:19:30
Pace6:04 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:19:56
Pace6:06 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:21:1919:176:1219:17
6:12
-
10K
6.21 mi10:39:5637:546:0618:37
6:00
-0:12
15K
9.32 mi10:58:4156:396:0518:45
6:02
+0:02
20K
12.43 mi11:17:291:15:276:0418:48
6:03
+0:01
Half
13.11 mi11:21:321:19:306:044:03
5:56
-0:07
25K
15.53 mi11:36:021:34:006:0314:30
5:59
+0:03
30K
18.64 mi11:54:581:52:566:0318:56
6:06
+0:07
20M
20.00 mi12:03:112:01:096:038:13
6:03
-0:03
21M
21.00 mi12:09:332:07:316:046:22
6:22
+0:19
35K
21.75 mi12:13:582:11:566:044:25
5:54
-0:28
23M
23.00 mi12:21:352:19:336:047:37
6:05
+0:11
24M
24.00 mi12:27:342:25:326:045:59
5:59
-0:06
40K
24.85 mi12:32:492:30:476:045:15
6:08
+0:09
25.2M
25.20 mi12:35:062:33:046:042:17
6:37
+0:29
Finish
26.22 mi12:41:282:39:266:056:22
6:15
-0:22

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

5:54 /mi

Average Pace

6:05 /mi

Slowest Pace

6:37 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:37:09

99% of race

Time at Steady Pace

2:17

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:05 /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 mi10:21:1919:176:1219:17
6:12
#1145
10K
6.21 mi10:39:5637:546:0618:37
6:00
#965
15K
9.32 mi10:58:4156:396:0518:45
6:02
#890
20K
12.43 mi11:17:291:15:276:0418:48
6:03
#826
Half
13.11 mi11:21:321:19:306:044:03
5:56
#806
25K
15.53 mi11:36:021:34:006:0314:30
5:59
#737
30K
18.64 mi11:54:581:52:566:0318:56
6:06
#689
20M
20.00 mi12:03:112:01:096:038:13
6:03
#657
21M
21.00 mi12:09:332:07:316:046:22
6:22
#637
35K
21.75 mi12:13:582:11:566:044:25
5:54
#629
23M
23.00 mi12:21:352:19:336:047:37
6:05
#608
24M
24.00 mi12:27:342:25:326:045:59
5:59
#601
40K
24.85 mi12:32:492:30:476:045:15
6:08
#592
25.2M
25.20 mi12:35:062:33:046:042:17
6:37
#590
Finish
26.22 mi12:41:282:39:266:056:22
6:15
#600
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi114510831083790(Top 3%)744(Top 5%)744(Top 14%)
10K6.21 mi3.10 mi965+180911+172911+172777(Top 3%)732(Top 5%)732(Top 14%)
15K9.32 mi3.11 mi890+75840+71840+71790(Top 3%)744(Top 5%)744(Top 14%)
20K12.43 mi3.11 mi826+64779+61779+61655(Top 2%)613(Top 4%)613(Top 12%)
Half13.11 mi0.68 mi806+20761+18761+18613(Top 2%)575(Top 4%)575(Top 11%)
25K15.53 mi2.42 mi737+69693+68693+68527(Top 2%)490(Top 3%)490(Top 9%)
30K18.64 mi3.11 mi689+48647+46647+46498(Top 2%)466(Top 3%)466(Top 9%)
20M20.00 mi1.36 mi657+32616+31616+31410(Top 2%)378(Top 2%)378(Top 7%)
21M21.00 mi1.00 mi637+20596+20596+20438(Top 2%)405(Top 3%)405(Top 8%)
35K21.75 mi0.75 mi629+8588+8588+8518(Top 2%)482(Top 3%)482(Top 9%)
23M23.00 mi1.25 mi608+21568+20568+20436(Top 2%)408(Top 3%)408(Top 8%)
24M24.00 mi1.00 mi601+7561+7561+7511(Top 2%)482(Top 3%)482(Top 9%)
40K24.85 mi0.85 mi592+9552+9552+9554(Top 2%)523(Top 3%)523(Top 10%)
25.2M25.20 mi0.35 mi590+2550+2550+2682(Top 3%)647(Top 4%)647(Top 12%)
Finish26.22 mi1.02 mi600-10560-10560-101414(Top 5%)1337(Top 9%)1337(Top 25%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 3%
×21stories
+97ft-345ft

Overall

790

Males

744

M18-39

744

5K→10K

3.1 - 6.2 mi

Top 3%
×5stories
+79ft-138ft

Overall

777

Males

732

M18-39

732

10K→15K

6.2 - 9.3 mi

Top 3%
×3stories
+67ft-78ft

Overall

790

Males

744

M18-39

744

15K→20K

9.3 - 12.4 mi

Top 2%
×5stories
+106ft-86ft

Overall

655

Males

613

M18-39

613

20K→Half

12.4 - 13.1 mi

Top 2%
×2stories
+19ft-37ft

Overall

613

Males

575

M18-39

575

Half→25K

13.1 - 15.5 mi

Top 2%
×4stories
+66ft-88ft

Overall

527

Males

490

M18-39

490

25K→30K

15.5 - 18.6 mi

Top 2%
×9stories
+181ft-148ft

Overall

498

Males

466

M18-39

466

30K→20M

18.6 - 20.0 mi

Top 2%
×5stories
+64ft-50ft

Overall

410

Males

378

M18-39

378

20M→21M

20.0 - 21.0 mi

Top 2%
×8stories
+106ft-24ft

Overall

438

Males

405

M18-39

405

21M→35K

21.0 - 21.8 mi

Top 2%
×7stories
+17ft-86ft

Overall

518

Males

482

M18-39

482

35K→23M

21.8 - 23.0 mi

Top 2%
×5stories
+23ft-63ft

Overall

436

Males

408

M18-39

408

23M→24M

23.0 - 24.0 mi

Top 2%
×6stories
+12ft-82ft

Overall

511

Males

482

M18-39

482

24M→40K

24.0 - 24.9 mi

Top 2%
×1story
+6ft-20ft

Overall

554

Males

523

M18-39

523

40K→25.2M

24.9 - 25.2 mi

Top 3%
×1story
+13ft-16ft

Overall

682

Males

647

M18-39

647

25.2M→Finish

25.2 - 26.2 mi

Top 5%
×2stories
+22ft-21ft

Overall

1414

Males

1337

M18-39

1337

Passing Analysis

Category:
Athletes Passed
595
Passed By
50
Net Change
+545
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1145
5K → 10K1844+180#1145#965
10K → 15K805+75#965#890
15K → 20K717+64#890#826
20K → Half200+20#826#806
Half → 25K701+69#806#737
25K → 30K502+48#737#689
30K → 20M320+32#689#657
20M → 21M222+20#657#637
21M → 35K113+8#637#629
35K → 23M221+21#629#608
23M → 24M103+7#608#601
24M → 40K145+9#601#592
40K → 25.2M42+2#592#590
25.2M → Finish515-10#590#600
TOTALS59550+545
📊

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