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BOSTON MARATHON 2023

Kevin Byrd

Bib: 7445•M

VA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 19%
Gender (Male)
#0 / 15176
Top 31%
Masters (Masters Men)
#0 / 9891
Top 17%
Division (M40-44)
#0 / 2241
Top 41%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:08
Rank: #4700
Start → 5K
21:08 | 6:48/mi
10K· 6.21 mi
42:09
Rank: #4829 (-129)
5K → 10K
21:01 | 6:46/mi
15K· 9.32 mi
1:03:17
Rank: #4909 (-80)
10K → 15K
21:08 | 6:48/mi
20K· 12.43 mi
1:24:36
Rank: #4918 (-9)
15K → 20K
21:19 | 6:52/mi
Half· 13.11 mi
1:29:16
Rank: #4950 (-32)
20K → Half
4:40 | 6:50/mi
25K· 15.53 mi
1:46:08
Rank: #5016 (-66)
Half → 25K
16:52 | 6:57/mi
30K· 18.64 mi
2:08:01
Rank: #4905 (+111)
25K → 30K
21:53 | 7:03/mi
20M
2:18:26
Rank: #5161 (-256)
30K → 20M
10:25 | 7:40/mi
21M
2:26:05
Rank: #5134 (+27)
20M → 21M
7:39 | 7:40/mi
35K· 21.75 mi
2:31:33
Rank: #5178 (-44)
21M → 35K
5:28 | 7:18/mi
23M
2:41:02
Rank: #5237 (-59)
35K → 23M
9:29 | 7:34/mi
24M
2:48:34
Rank: #5294 (-57)
23M → 24M
7:32 | 7:32/mi
40K· 24.85 mi
2:55:03
Rank: #5292 (+2)
24M → 40K
6:29 | 7:35/mi
25.2M
2:57:44
Rank: #5278 (+14)
40K → 25.2M
2:41 | 7:47/mi
Finish· 26.22 mi
3:04:41
Rank: #5183 (+95)
25.2M → Finish
6:57 | 6:49/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:29:16
Pace6:49 /mi
2nd Half
Distance13.11 mi
Time1:35:25
Pace7:17 /mi
📊Positive Split: 6.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:25:1621:086:4821:08
6:48
-
10K
6.21 mi10:46:1742:096:4721:01
6:46
-0:02
15K
9.32 mi11:07:251:03:176:4721:08
6:48
+0:02
20K
12.43 mi11:28:441:24:366:4821:19
6:52
+0:04
Half
13.11 mi11:33:241:29:166:494:40
6:50
-0:02
25K
15.53 mi11:50:161:46:086:5016:52
6:57
+0:07
30K
18.64 mi12:12:092:08:016:5221:53
7:03
+0:06
20M
20.00 mi12:22:342:18:266:5510:25
7:40
+0:37
21M
21.00 mi12:30:132:26:056:577:39
7:40
0:00
35K
21.75 mi12:35:412:31:336:585:28
7:18
-0:22
23M
23.00 mi12:45:102:41:027:009:29
7:34
+0:16
24M
24.00 mi12:52:422:48:347:017:32
7:32
-0:02
40K
24.85 mi12:59:112:55:037:036:29
7:35
+0:03
25.2M
25.20 mi13:01:522:57:447:032:41
7:47
+0:12
Finish
26.22 mi13:08:493:04:417:036:57
6:49
-0:58

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

6:46 /mi

Average Pace

7:03 /mi

Slowest Pace

7:47 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:20:26

76% of race

Time at Steady Pace

44:15

24% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:03 /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 mi10:25:1621:086:4821:08
6:48
#4700
10K
6.21 mi10:46:1742:096:4721:01
6:46
#4829
15K
9.32 mi11:07:251:03:176:4721:08
6:48
#4909
20K
12.43 mi11:28:441:24:366:4821:19
6:52
#4918
Half
13.11 mi11:33:241:29:166:494:40
6:50
#4950
25K
15.53 mi11:50:161:46:086:5016:52
6:57
#5016
30K
18.64 mi12:12:092:08:016:5221:53
7:03
#4905
20M
20.00 mi12:22:342:18:266:5510:25
7:40
#5161
21M
21.00 mi12:30:132:26:056:577:39
7:40
#5134
35K
21.75 mi12:35:412:31:336:585:28
7:18
#5178
23M
23.00 mi12:45:102:41:027:009:29
7:34
#5237
24M
24.00 mi12:52:422:48:347:017:32
7:32
#5294
40K
24.85 mi12:59:112:55:037:036:29
7:35
#5292
25.2M
25.20 mi13:01:522:57:447:032:41
7:47
#5278
Finish
26.22 mi13:08:493:04:417:036:57
6:49
#5183
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi4700437443745146(Top 19%)4763(Top 31%)4763(Top 213%)
10K6.21 mi3.10 mi4829-1294491-1174491-1174948(Top 19%)4587(Top 30%)4587(Top 205%)
15K9.32 mi3.11 mi4909-804566-754566-755146(Top 19%)4763(Top 31%)4763(Top 213%)
20K12.43 mi3.11 mi4918-94579-134579-135020(Top 19%)4653(Top 31%)4653(Top 208%)
Half13.11 mi0.68 mi4950-324605-264605-265573(Top 21%)5133(Top 34%)5133(Top 229%)
25K15.53 mi2.42 mi5016-664656-514656-515326(Top 20%)4908(Top 32%)4908(Top 219%)
30K18.64 mi3.11 mi4905+1114563+934563+934635(Top 17%)4287(Top 28%)4287(Top 191%)
20M20.00 mi1.36 mi5161-2564772-2094772-2097880(Top 30%)6506(Top 43%)6506(Top 290%)
21M21.00 mi1.00 mi5134+274740+324740+325398(Top 20%)4751(Top 31%)4751(Top 212%)
35K21.75 mi0.75 mi5178-444773-334773-337114(Top 27%)5954(Top 39%)5954(Top 266%)
23M23.00 mi1.25 mi5237-594813-404813-406856(Top 26%)5721(Top 38%)5721(Top 255%)
24M24.00 mi1.00 mi5294-574858-454858-457877(Top 30%)6225(Top 41%)6225(Top 278%)
40K24.85 mi0.85 mi5292+24843+154843+157170(Top 27%)5718(Top 38%)5718(Top 255%)
25.2M25.20 mi0.35 mi5278+144826+174826+175254(Top 20%)4434(Top 29%)4434(Top 198%)
Finish26.22 mi1.02 mi5183+954747+794747+794192(Top 16%)3696(Top 24%)3696(Top 165%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 19%
×21stories
+97ft-345ft

Overall

5146

Males

4763

M40-44

4763

5K→10K

3.1 - 6.2 mi

Top 19%
×5stories
+79ft-138ft

Overall

4948

Males

4587

M40-44

4587

10K→15K

6.2 - 9.3 mi

Top 19%
×3stories
+67ft-78ft

Overall

5146

Males

4763

M40-44

4763

15K→20K

9.3 - 12.4 mi

Top 19%
×5stories
+106ft-86ft

Overall

5020

Males

4653

M40-44

4653

20K→Half

12.4 - 13.1 mi

Top 21%
×2stories
+19ft-37ft

Overall

5573

Males

5133

M40-44

5133

Half→25K

13.1 - 15.5 mi

Top 20%
×4stories
+66ft-88ft

Overall

5326

Males

4908

M40-44

4908

25K→30K

15.5 - 18.6 mi

Top 17%
×9stories
+181ft-148ft

Overall

4635

Males

4287

M40-44

4287

30K→20M

18.6 - 20.0 mi

Top 30%
×5stories
+64ft-50ft

Overall

7880

Males

6506

M40-44

6506

20M→21M

20.0 - 21.0 mi

Top 20%
×8stories
+106ft-24ft

Overall

5398

Males

4751

M40-44

4751

21M→35K

21.0 - 21.8 mi

Top 27%
×7stories
+17ft-86ft

Overall

7114

Males

5954

M40-44

5954

35K→23M

21.8 - 23.0 mi

Top 26%
×5stories
+23ft-63ft

Overall

6856

Males

5721

M40-44

5721

23M→24M

23.0 - 24.0 mi

Top 30%
×6stories
+12ft-82ft

Overall

7877

Males

6225

M40-44

6225

24M→40K

24.0 - 24.9 mi

Top 27%
×1story
+6ft-20ft

Overall

7170

Males

5718

M40-44

5718

40K→25.2M

24.9 - 25.2 mi

Top 20%
×1story
+13ft-16ft

Overall

5254

Males

4434

M40-44

4434

25.2M→Finish

25.2 - 26.2 mi

Top 16%
×2stories
+22ft-21ft

Overall

4192

Males

3696

M40-44

3696

Passing Analysis

Category:
Athletes Passed
1005
Passed By
1488
Net Change
-483
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4700
5K → 10K152281-129#4700#4829
10K → 15K85165-80#4829#4909
15K → 20K100109-9#4909#4918
20K → Half941-32#4918#4950
Half → 25K84150-66#4950#5016
25K → 30K19584+111#5016#4905
30K → 20M23279-256#4905#5161
20M → 21M6740+27#5161#5134
21M → 35K2771-44#5134#5178
35K → 23M43102-59#5178#5237
23M → 24M3491-57#5237#5294
24M → 40K5351+2#5294#5292
40K → 25.2M2713+14#5292#5278
25.2M → Finish10611+95#5278#5183
TOTALS10051488-483
📊

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