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BOSTON MARATHON 2023

Britton Costa

Bib: 6259•M

CT

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 18%
Gender (Male)
#0 / 15176
Top 29%
Division (M18-39)
#0 / 5285
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:34
Rank: #5865
Start → 5K
21:34 | 6:56/mi
10K· 6.21 mi
42:33
Rank: #5395 (+470)
5K → 10K
20:59 | 6:45/mi
15K· 9.32 mi
1:03:42
Rank: #5304 (+91)
10K → 15K
21:09 | 6:48/mi
20K· 12.43 mi
1:24:51
Rank: #5105 (+199)
15K → 20K
21:09 | 6:48/mi
Half· 13.11 mi
1:29:26
Rank: #5078 (+27)
20K → Half
4:35 | 6:43/mi
25K· 15.53 mi
1:46:00
Rank: #4926 (+152)
Half → 25K
16:34 | 6:50/mi
30K· 18.64 mi
2:07:35
Rank: #4701 (+225)
25K → 30K
21:35 | 6:57/mi
20M
2:16:58
Rank: #4570 (+131)
30K → 20M
9:23 | 6:54/mi
21M
2:24:27
Rank: #4567 (+3)
20M → 21M
7:29 | 7:29/mi
35K· 21.75 mi
2:29:35
Rank: #4563 (+4)
21M → 35K
5:08 | 6:52/mi
23M
2:38:45
Rank: #4608 (-45)
35K → 23M
9:10 | 7:19/mi
24M
2:46:09
Rank: #4686 (-78)
23M → 24M
7:24 | 7:24/mi
40K· 24.85 mi
2:52:28
Rank: #4710 (-24)
24M → 40K
6:19 | 7:24/mi
25.2M
2:55:11
Rank: #4702 (+8)
40K → 25.2M
2:43 | 7:53/mi
Finish· 26.22 mi
3:02:33
Rank: #4733 (-31)
25.2M → Finish
7:22 | 7:14/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:29:26
Pace6:49 /mi
2nd Half
Distance13.11 mi
Time1:33:07
Pace7:06 /mi
📊Positive Split: 4.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:24:5521:346:5621:34
6:56
-
10K
6.21 mi10:45:5442:336:5120:59
6:45
-0:11
15K
9.32 mi11:07:031:03:426:5021:09
6:48
+0:03
20K
12.43 mi11:28:121:24:516:5021:09
6:48
0:00
Half
13.11 mi11:32:471:29:266:494:35
6:43
-0:05
25K
15.53 mi11:49:211:46:006:4916:34
6:50
+0:07
30K
18.64 mi12:10:562:07:356:5121:35
6:57
+0:07
20M
20.00 mi12:20:192:16:586:519:23
6:54
-0:03
21M
21.00 mi12:27:482:24:276:537:29
7:29
+0:35
35K
21.75 mi12:32:562:29:356:535:08
6:52
-0:37
23M
23.00 mi12:42:062:38:456:549:10
7:19
+0:27
24M
24.00 mi12:49:302:46:096:557:24
7:24
+0:05
40K
24.85 mi12:55:492:52:286:566:19
7:24
0:00
25.2M
25.20 mi12:58:322:55:116:572:43
7:53
+0:29
Finish
26.22 mi13:05:543:02:336:587:22
7:14
-0:39

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

6:43 /mi

Average Pace

6:58 /mi

Slowest Pace

7:53 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:38:38

87% of race

Time at Steady Pace

23:55

13% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:58 /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 mi10:24:5521:346:5621:34
6:56
#5865
10K
6.21 mi10:45:5442:336:5120:59
6:45
#5395
15K
9.32 mi11:07:031:03:426:5021:09
6:48
#5304
20K
12.43 mi11:28:121:24:516:5021:09
6:48
#5105
Half
13.11 mi11:32:471:29:266:494:35
6:43
#5078
25K
15.53 mi11:49:211:46:006:4916:34
6:50
#4926
30K
18.64 mi12:10:562:07:356:5121:35
6:57
#4701
20M
20.00 mi12:20:192:16:586:519:23
6:54
#4570
21M
21.00 mi12:27:482:24:276:537:29
7:29
#4567
35K
21.75 mi12:32:562:29:356:535:08
6:52
#4563
23M
23.00 mi12:42:062:38:456:549:10
7:19
#4608
24M
24.00 mi12:49:302:46:096:557:24
7:24
#4686
40K
24.85 mi12:55:492:52:286:566:19
7:24
#4710
25.2M
25.20 mi12:58:322:55:116:572:43
7:53
#4702
Finish
26.22 mi13:05:543:02:336:587:22
7:14
#4733
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi5865537753775192(Top 20%)4800(Top 32%)4800(Top 91%)
10K6.21 mi3.10 mi5395+4704984+3934984+3934850(Top 18%)4502(Top 30%)4502(Top 85%)
15K9.32 mi3.11 mi5304+914911+734911+735192(Top 20%)4800(Top 32%)4800(Top 91%)
20K12.43 mi3.11 mi5105+1994737+1744737+1744509(Top 17%)4205(Top 28%)4205(Top 80%)
Half13.11 mi0.68 mi5078+274712+254712+254544(Top 17%)4236(Top 28%)4236(Top 80%)
25K15.53 mi2.42 mi4926+1524579+1334579+1334450(Top 17%)4148(Top 27%)4148(Top 78%)
30K18.64 mi3.11 mi4701+2254383+1964383+1964000(Top 15%)3739(Top 25%)3739(Top 71%)
20M20.00 mi1.36 mi4570+1314262+1214262+1213479(Top 13%)3251(Top 21%)3251(Top 62%)
21M21.00 mi1.00 mi4567+34259+34259+34492(Top 17%)4094(Top 27%)4094(Top 77%)
35K21.75 mi0.75 mi4563+44251+84251+84567(Top 17%)4158(Top 27%)4158(Top 79%)
23M23.00 mi1.25 mi4608-454287-364287-365403(Top 20%)4756(Top 31%)4756(Top 90%)
24M24.00 mi1.00 mi4686-784355-684355-687004(Top 26%)5700(Top 38%)5700(Top 108%)
40K24.85 mi0.85 mi4710-244368-134368-136065(Top 23%)5040(Top 33%)5040(Top 95%)
25.2M25.20 mi0.35 mi4702+84360+84360+85727(Top 22%)4747(Top 31%)4747(Top 90%)
Finish26.22 mi1.02 mi4733-314370-104370-106594(Top 25%)5305(Top 35%)5305(Top 100%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 20%
×21stories
+97ft-345ft

Overall

5192

Males

4800

M18-39

4800

5K→10K

3.1 - 6.2 mi

Top 18%
×5stories
+79ft-138ft

Overall

4850

Males

4502

M18-39

4502

10K→15K

6.2 - 9.3 mi

Top 20%
×3stories
+67ft-78ft

Overall

5192

Males

4800

M18-39

4800

15K→20K

9.3 - 12.4 mi

Top 17%
×5stories
+106ft-86ft

Overall

4509

Males

4205

M18-39

4205

20K→Half

12.4 - 13.1 mi

Top 17%
×2stories
+19ft-37ft

Overall

4544

Males

4236

M18-39

4236

Half→25K

13.1 - 15.5 mi

Top 17%
×4stories
+66ft-88ft

Overall

4450

Males

4148

M18-39

4148

25K→30K

15.5 - 18.6 mi

Top 15%
×9stories
+181ft-148ft

Overall

4000

Males

3739

M18-39

3739

30K→20M

18.6 - 20.0 mi

Top 13%
×5stories
+64ft-50ft

Overall

3479

Males

3251

M18-39

3251

20M→21M

20.0 - 21.0 mi

Top 17%
×8stories
+106ft-24ft

Overall

4492

Males

4094

M18-39

4094

21M→35K

21.0 - 21.8 mi

Top 17%
×7stories
+17ft-86ft

Overall

4567

Males

4158

M18-39

4158

35K→23M

21.8 - 23.0 mi

Top 20%
×5stories
+23ft-63ft

Overall

5403

Males

4756

M18-39

4756

23M→24M

23.0 - 24.0 mi

Top 26%
×6stories
+12ft-82ft

Overall

7004

Males

5700

M18-39

5700

24M→40K

24.0 - 24.9 mi

Top 23%
×1story
+6ft-20ft

Overall

6065

Males

5040

M18-39

5040

40K→25.2M

24.9 - 25.2 mi

Top 22%
×1story
+13ft-16ft

Overall

5727

Males

4747

M18-39

4747

25.2M→Finish

25.2 - 26.2 mi

Top 25%
×2stories
+22ft-21ft

Overall

6594

Males

5305

M18-39

5305

Passing Analysis

Category:
Athletes Passed
1825
Passed By
693
Net Change
+1132
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5865
5K → 10K52454+470#5865#5395
10K → 15K16776+91#5395#5304
15K → 20K23132+199#5304#5105
20K → Half3912+27#5105#5078
Half → 25K18129+152#5078#4926
25K → 30K25833+225#4926#4701
30K → 20M14110+131#4701#4570
20M → 21M6360+3#4570#4567
21M → 35K4137+4#4567#4563
35K → 23M5499-45#4563#4608
23M → 24M29107-78#4608#4686
24M → 40K3155-24#4686#4710
40K → 25.2M2315+8#4710#4702
25.2M → Finish4374-31#4702#4733
TOTALS1825693+1132
📊

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