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BOSTON MARATHON 2023

John Byrd

Bib: 24524•M

TN

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M75-79)
#0 / 49
Top 31%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
10:21/mi
32:09
↑ 97↓ 3451.5%
10K· 6.21 mi
9:44/mi
1:02:23
↑ 79↓ 1380.4%
15K· 9.32 mi
9:52/mi
1:33:03
↑ 67↓ 78
20K· 12.43 mi
10:00/mi
2:04:06
↑ 106↓ 860.1%
Half· 13.11 mi
10:02/mi
2:10:57
↑ 19↓ 370.5%
25K· 15.53 mi
10:02/mi
2:35:16
↑ 66↓ 880.2%
30K· 18.64 mi
10:24/mi
3:07:36
↑ 181↓ 1480.2%
20M
10:47/mi
3:22:15
↑ 64↓ 500.2%
21M
11:48/mi
3:34:03
↑ 106↓ 241.6%
35K· 21.75 mi
10:20/mi
3:41:47
↑ 17↓ 861.7%
23M
10:54/mi
3:55:26
↑ 23↓ 630.6%
24M
11:11/mi
4:06:37
↓ 821.3%
40K· 24.85 mi
11:28/mi
4:16:25
↓ 200.3%
25.2M
13:00/mi
4:20:54
↑ 13↓ 160.2%
Finish· 26.22 mi
12:04/mi
4:33:12
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:10:57
Pace9:59 /mi
2nd Half
Distance13.11 mi
Time2:22:15
Pace10:51 /mi
📊Positive Split: 8.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:50:5332:0910:2132:09
10:21
-
10K
6.21 mi12:21:071:02:2310:0230:14
9:44
-0:37
15K
9.32 mi12:51:471:33:039:5930:40
9:52
+0:08
20K
12.43 mi13:22:502:04:069:5931:03
10:00
+0:08
Half
13.11 mi13:29:412:10:579:596:51
10:02
+0:02
25K
15.53 mi13:54:002:35:1610:0024:19
10:02
0:00
30K
18.64 mi14:26:203:07:3610:0432:20
10:24
+0:22
20M
20.00 mi14:40:593:22:1510:0714:39
10:47
+0:23
21M
21.00 mi14:52:473:34:0310:1211:48
11:48
+1:01
35K
21.75 mi15:00:313:41:4710:127:44
10:20
-1:28
23M
23.00 mi15:14:103:55:2610:1413:39
10:54
+0:34
24M
24.00 mi15:25:214:06:3710:1711:11
11:11
+0:17
40K
24.85 mi15:35:094:16:2510:199:48
11:28
+0:17
25.2M
25.20 mi15:39:384:20:5410:214:29
13:00
+1:32
Finish
26.22 mi15:51:564:33:1210:2612:18
12:04
-0:56

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

9:44 /mi

Average Pace

10:26 /mi

Slowest Pace

13:00 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:00:54

22% of race

Time at Steady Pace

2:29:05

55% of race

Time at Slower Pace

1:03:13

23% of race

Average Pace: 10:25 /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 mi11:50:5332:0910:2132:09
10:21
#24344
10K
6.21 mi12:21:071:02:2310:0230:14
9:44
#23704
15K
9.32 mi12:51:471:33:039:5930:40
9:52
#23564
20K
12.43 mi13:22:502:04:069:5931:03
10:00
#23391
Half
13.11 mi13:29:412:10:579:596:51
10:02
#23387
25K
15.53 mi13:54:002:35:1610:0024:19
10:02
#23194
30K
18.64 mi14:26:203:07:3610:0432:20
10:24
#22942
20M
20.00 mi14:40:593:22:1510:0714:39
10:47
#22893
21M
21.00 mi14:52:473:34:0310:1211:48
11:48
#22872
35K
21.75 mi15:00:313:41:4710:127:44
10:20
#22839
23M
23.00 mi15:14:103:55:2610:1413:39
10:54
#22787
24M
24.00 mi15:25:214:06:3710:1711:11
11:11
#22807
40K
24.85 mi15:35:094:16:2510:199:48
11:28
#22817
25.2M
25.20 mi15:39:384:20:5410:214:29
13:00
#22845
Finish
26.22 mi15:51:564:33:1210:2612:18
12:04
#22978
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM75-79Seg. OverallSeg. MalesSeg. M75-79
5K3.11 mi3.11 mi24344142561425623233(Top 87%)13748(Top 91%)13748(Top 28057%)
10K6.21 mi3.10 mi23704+64013950+30613950+30623114(Top 87%)13699(Top 90%)13699(Top 27957%)
15K9.32 mi3.11 mi23564+14013894+5613894+5623233(Top 87%)13748(Top 91%)13748(Top 28057%)
20K12.43 mi3.11 mi23391+17313818+7613818+7622893(Top 86%)13572(Top 89%)13572(Top 27698%)
Half13.11 mi0.68 mi23387+413816+213816+223339(Top 88%)13776(Top 91%)13776(Top 28114%)
25K15.53 mi2.42 mi23194+19313716+10013716+10022272(Top 84%)13268(Top 87%)13268(Top 27078%)
30K18.64 mi3.11 mi22942+25213565+15113565+15122016(Top 83%)13079(Top 86%)13079(Top 26692%)
20M20.00 mi1.36 mi22893+4913528+3713528+3722307(Top 84%)13141(Top 87%)13141(Top 26818%)
21M21.00 mi1.00 mi22872+2113512+1613512+1622417(Top 84%)13164(Top 87%)13164(Top 26865%)
35K21.75 mi0.75 mi22839+3313489+2313489+2322071(Top 83%)12959(Top 85%)12959(Top 26447%)
23M23.00 mi1.25 mi22787+5213449+4013449+4022151(Top 83%)12986(Top 86%)12986(Top 26502%)
24M24.00 mi1.00 mi22807-20134491344923371(Top 88%)13513(Top 89%)13513(Top 27578%)
40K24.85 mi0.85 mi22817-1013452-313452-323147(Top 87%)13390(Top 88%)13390(Top 27327%)
25.2M25.20 mi0.35 mi22845-2813463-1113463-1123947(Top 90%)13764(Top 91%)13764(Top 28090%)
Finish26.22 mi1.02 mi22978-13313519-5613519-5625287(Top 95%)14453(Top 95%)14453(Top 29496%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 87%
×21story building
+97ft-345ft

Overall

23233

Males

13748

M75-79

13748

5K→10K

3.1 - 6.2 mi

Top 87%
×5story building
+79ft-138ft

Overall

23114

Males

13699

M75-79

13699

10K→15K

6.2 - 9.3 mi

Top 87%
×3story building
+67ft-78ft

Overall

23233

Males

13748

M75-79

13748

15K→20K

9.3 - 12.4 mi

Top 86%
×5story building
+106ft-86ft

Overall

22893

Males

13572

M75-79

13572

20K→Half

12.4 - 13.1 mi

Top 88%
×2story building
+19ft-37ft

Overall

23339

Males

13776

M75-79

13776

Half→25K

13.1 - 15.5 mi

Top 84%
×4story building
+66ft-88ft

Overall

22272

Males

13268

M75-79

13268

25K→30K

15.5 - 18.6 mi

Top 83%
×9story building
+181ft-148ft

Overall

22016

Males

13079

M75-79

13079

30K→20M

18.6 - 20.0 mi

Top 84%
×5story building
+64ft-50ft

Overall

22307

Males

13141

M75-79

13141

20M→21M

20.0 - 21.0 mi

Top 84%
×8story building
+106ft-24ft

Overall

22417

Males

13164

M75-79

13164

21M→35K

21.0 - 21.8 mi

Top 83%
×7story building
+17ft-86ft

Overall

22071

Males

12959

M75-79

12959

35K→23M

21.8 - 23.0 mi

Top 83%
×5story building
+23ft-63ft

Overall

22151

Males

12986

M75-79

12986

23M→24M

23.0 - 24.0 mi

Top 88%
×6story building
+12ft-82ft

Overall

23371

Males

13513

M75-79

13513

24M→40K

24.0 - 24.9 mi

Top 87%
×1story
+6ft-20ft

Overall

23147

Males

13390

M75-79

13390

40K→25.2M

24.9 - 25.2 mi

Top 90%
×1story
+13ft-16ft

Overall

23947

Males

13764

M75-79

13764

25.2M→Finish

25.2 - 26.2 mi

Top 95%
×2story building
+22ft-21ft

Overall

25287

Males

14453

M75-79

14453

Passing Analysis

Category:
Athletes Passed
1944
Passed By
578
Net Change
+1366
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#24344
5K → 10K67232+640#24344#23704
10K → 15K19757+140#23704#23564
15K → 20K22047+173#23564#23391
20K → Half2622+4#23391#23387
Half → 25K21724+193#23387#23194
25K → 30K27321+252#23194#22942
30K → 20M9041+49#22942#22893
20M → 21M5534+21#22893#22872
21M → 35K4714+33#22872#22839
35K → 23M7927+52#22839#22787
23M → 24M2646-20#22787#22807
24M → 40K2636-10#22807#22817
40K → 25.2M735-28#22817#22845
25.2M → Finish9142-133#22845#22978
TOTALS1944578+1366
📊

Passing Visuals

Category:
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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