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BOSTON MARATHON 2023

Matthew Baird

Bib: 3508•M

PA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 8%
Gender (Male)
#0 / 15176
Top 13%
Division (M18-39)
#0 / 5285
Top 30%
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
6:45/mi
20:59
↑ 97↓ 3451.5%
10K· 6.21 mi
6:30/mi
41:11
↑ 79↓ 1380.4%
15K· 9.32 mi
6:34/mi
1:01:35
↑ 67↓ 78
20K· 12.43 mi
6:32/mi
1:21:53
↑ 106↓ 860.1%
Half· 13.11 mi
6:23/mi
1:26:14
↑ 19↓ 370.5%
25K· 15.53 mi
6:35/mi
1:42:11
↑ 66↓ 880.2%
30K· 18.64 mi
6:38/mi
2:02:48
↑ 181↓ 1480.2%
20M
6:34/mi
2:11:44
↑ 64↓ 500.2%
21M
6:50/mi
2:18:34
↑ 106↓ 241.6%
35K· 21.75 mi
6:18/mi
2:23:17
↑ 17↓ 861.7%
23M
6:31/mi
2:31:27
↑ 23↓ 630.6%
24M
6:16/mi
2:37:43
↓ 821.3%
40K· 24.85 mi
6:32/mi
2:43:18
↓ 200.3%
25.2M
6:49/mi
2:45:39
↑ 13↓ 160.2%
Finish· 26.22 mi
6:04/mi
2:51:50
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:26:14
Pace6:35 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:25:36
Pace6:32 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:22:3020:596:4520:59
6:45
-
10K
6.21 mi10:42:4241:116:3820:12
6:30
-0:15
15K
9.32 mi11:03:061:01:356:3620:24
6:34
+0:04
20K
12.43 mi11:23:241:21:536:3520:18
6:32
-0:02
Half
13.11 mi11:27:451:26:146:354:21
6:23
-0:09
25K
15.53 mi11:43:421:42:116:3515:57
6:35
+0:12
30K
18.64 mi12:04:192:02:486:3520:37
6:38
+0:03
20M
20.00 mi12:13:152:11:446:358:56
6:34
-0:04
21M
21.00 mi12:20:052:18:346:366:50
6:50
+0:16
35K
21.75 mi12:24:482:23:176:354:43
6:18
-0:32
23M
23.00 mi12:32:582:31:276:358:10
6:31
+0:13
24M
24.00 mi12:39:142:37:436:346:16
6:16
-0:15
40K
24.85 mi12:44:492:43:186:345:35
6:32
+0:16
25.2M
25.20 mi12:47:102:45:396:342:21
6:49
+0:17
Finish
26.22 mi12:53:212:51:506:346:11
6:04
-0:45

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

6:04 /mi

Average Pace

6:34 /mi

Slowest Pace

6:50 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:21:40

82% of race

Time at Steady Pace

30:10

18% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:33 /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 mi10:22:3020:596:4520:59
6:45
#4151
10K
6.21 mi10:42:4241:116:3820:12
6:30
#3359
15K
9.32 mi11:03:061:01:356:3620:24
6:34
#3242
20K
12.43 mi11:23:241:21:536:3520:18
6:32
#3008
Half
13.11 mi11:27:451:26:146:354:21
6:23
#2935
25K
15.53 mi11:43:421:42:116:3515:57
6:35
#2850
30K
18.64 mi12:04:192:02:486:3520:37
6:38
#2683
20M
20.00 mi12:13:152:11:446:358:56
6:34
#2576
21M
21.00 mi12:20:052:18:346:366:50
6:50
#2474
35K
21.75 mi12:24:482:23:176:354:43
6:18
#2422
23M
23.00 mi12:32:582:31:276:358:10
6:31
#2342
24M
24.00 mi12:39:142:37:436:346:16
6:16
#2273
40K
24.85 mi12:44:492:43:186:345:35
6:32
#2221
25.2M
25.20 mi12:47:102:45:396:342:21
6:49
#2191
Finish
26.22 mi12:53:212:51:506:346:11
6:04
#2080
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi4151388738873022(Top 11%)2881(Top 19%)2881(Top 55%)
10K6.21 mi3.10 mi3359+7923178+7093178+7092790(Top 10%)2666(Top 18%)2666(Top 50%)
15K9.32 mi3.11 mi3242+1173081+973081+973022(Top 11%)2881(Top 19%)2881(Top 55%)
20K12.43 mi3.11 mi3008+2342870+2112870+2112475(Top 9%)2370(Top 16%)2370(Top 45%)
Half13.11 mi0.68 mi2935+732802+682802+682112(Top 8%)2028(Top 13%)2028(Top 38%)
25K15.53 mi2.42 mi2850+852724+782724+782567(Top 10%)2456(Top 16%)2456(Top 46%)
30K18.64 mi3.11 mi2683+1672563+1612563+1612119(Top 8%)2024(Top 13%)2024(Top 38%)
20M20.00 mi1.36 mi2576+1072460+1032460+1031741(Top 7%)1661(Top 11%)1661(Top 31%)
21M21.00 mi1.00 mi2474+1022370+902370+901528(Top 6%)1457(Top 10%)1457(Top 28%)
35K21.75 mi0.75 mi2422+522319+512319+511607(Top 6%)1527(Top 10%)1527(Top 29%)
23M23.00 mi1.25 mi2342+802244+752244+751522(Top 6%)1447(Top 10%)1447(Top 27%)
24M24.00 mi1.00 mi2273+692177+672177+671267(Top 5%)1201(Top 8%)1201(Top 23%)
40K24.85 mi0.85 mi2221+522132+452132+451652(Top 6%)1555(Top 10%)1555(Top 29%)
25.2M25.20 mi0.35 mi2191+302103+292103+291221(Top 5%)1160(Top 8%)1160(Top 22%)
Finish26.22 mi1.02 mi2080+1111994+1091994+109910(Top 3%)870(Top 6%)870(Top 16%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 11%
×21story building
+97ft-345ft

Overall

3022

Males

2881

M18-39

2881

5K→10K

3.1 - 6.2 mi

Top 10%
×5story building
+79ft-138ft

Overall

2790

Males

2666

M18-39

2666

10K→15K

6.2 - 9.3 mi

Top 11%
×3story building
+67ft-78ft

Overall

3022

Males

2881

M18-39

2881

15K→20K

9.3 - 12.4 mi

Top 9%
×5story building
+106ft-86ft

Overall

2475

Males

2370

M18-39

2370

20K→Half

12.4 - 13.1 mi

Top 8%
×2story building
+19ft-37ft

Overall

2112

Males

2028

M18-39

2028

Half→25K

13.1 - 15.5 mi

Top 10%
×4story building
+66ft-88ft

Overall

2567

Males

2456

M18-39

2456

25K→30K

15.5 - 18.6 mi

Top 8%
×9story building
+181ft-148ft

Overall

2119

Males

2024

M18-39

2024

30K→20M

18.6 - 20.0 mi

Top 7%
×5story building
+64ft-50ft

Overall

1741

Males

1661

M18-39

1661

20M→21M

20.0 - 21.0 mi

Top 6%
×8story building
+106ft-24ft

Overall

1528

Males

1457

M18-39

1457

21M→35K

21.0 - 21.8 mi

Top 6%
×7story building
+17ft-86ft

Overall

1607

Males

1527

M18-39

1527

35K→23M

21.8 - 23.0 mi

Top 6%
×5story building
+23ft-63ft

Overall

1522

Males

1447

M18-39

1447

23M→24M

23.0 - 24.0 mi

Top 5%
×6story building
+12ft-82ft

Overall

1267

Males

1201

M18-39

1201

24M→40K

24.0 - 24.9 mi

Top 6%
×1story
+6ft-20ft

Overall

1652

Males

1555

M18-39

1555

40K→25.2M

24.9 - 25.2 mi

Top 5%
×1story
+13ft-16ft

Overall

1221

Males

1160

M18-39

1160

25.2M→Finish

25.2 - 26.2 mi

Top 3%
×2story building
+22ft-21ft

Overall

910

Males

870

M18-39

870

Passing Analysis

Category:
Athletes Passed
2207
Passed By
136
Net Change
+2071
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4151
5K → 10K80917+792#4151#3359
10K → 15K16851+117#3359#3242
15K → 20K2417+234#3242#3008
20K → Half752+73#3008#2935
Half → 25K10823+85#2935#2850
25K → 30K17710+167#2850#2683
30K → 20M1103+107#2683#2576
20M → 21M1075+102#2576#2474
21M → 35K553+52#2474#2422
35K → 23M844+80#2422#2342
23M → 24M723+69#2342#2273
24M → 40K586+52#2273#2221
40K → 25.2M322+30#2221#2191
25.2M → Finish1110+111#2191#2080
TOTALS2207136+2071
📊

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