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BOSTON MARATHON 2023

Gregory Costello

Bib: 4224•M

HI

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 17%
Gender (Male)
#0 / 15176
Top 27%
Division (M18-39)
#0 / 5285
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
6:41/mi
20:46
↑ 97↓ 3451.5%
10K· 6.21 mi
6:42/mi
41:34
↑ 79↓ 1380.4%
15K· 9.32 mi
6:42/mi
1:02:24
↑ 67↓ 78
20K· 12.43 mi
6:46/mi
1:23:24
↑ 106↓ 860.1%
Half· 13.11 mi
6:39/mi
1:27:56
↑ 19↓ 370.5%
25K· 15.53 mi
6:44/mi
1:44:16
↑ 66↓ 880.2%
30K· 18.64 mi
6:56/mi
2:05:49
↑ 181↓ 1480.2%
20M
7:03/mi
2:15:24
↑ 64↓ 500.2%
21M
7:31/mi
2:22:55
↑ 106↓ 241.6%
35K· 21.75 mi
7:06/mi
2:28:14
↑ 17↓ 861.7%
23M
7:20/mi
2:37:25
↑ 23↓ 630.6%
24M
7:10/mi
2:44:35
↓ 821.3%
40K· 24.85 mi
7:33/mi
2:51:02
↓ 200.3%
25.2M
7:56/mi
2:53:46
↑ 13↓ 160.2%
Finish· 26.22 mi
7:12/mi
3:01:06
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:27:56
Pace6:42 /mi
2nd Half
Distance13.11 mi
Time1:33:10
Pace7:06 /mi
📊Positive Split: 6.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:22:4920:466:4120:46
6:41
-
10K
6.21 mi10:43:3741:346:4120:48
6:42
+0:01
15K
9.32 mi11:04:271:02:246:4220:50
6:42
0:00
20K
12.43 mi11:25:271:23:246:4321:00
6:46
+0:04
Half
13.11 mi11:29:591:27:566:424:32
6:39
-0:07
25K
15.53 mi11:46:191:44:166:4316:20
6:44
+0:05
30K
18.64 mi12:07:522:05:496:4521:33
6:56
+0:12
20M
20.00 mi12:17:272:15:246:469:35
7:03
+0:07
21M
21.00 mi12:24:582:22:556:487:31
7:31
+0:28
35K
21.75 mi12:30:172:28:146:495:19
7:06
-0:25
23M
23.00 mi12:39:282:37:256:519:11
7:20
+0:14
24M
24.00 mi12:46:382:44:356:517:10
7:10
-0:10
40K
24.85 mi12:53:052:51:026:536:27
7:33
+0:23
25.2M
25.20 mi12:55:492:53:466:542:44
7:56
+0:23
Finish
26.22 mi13:03:093:01:066:557:20
7:12
-0:44

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

6:39 /mi

Average Pace

6:55 /mi

Slowest Pace

7:56 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:35:13

86% of race

Time at Steady Pace

23:09

13% of race

Time at Slower Pace

2:44

2% of race

Average Pace: 6:54 /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 mi10:22:4920:466:4120:46
6:41
#3536
10K
6.21 mi10:43:3741:346:4120:48
6:42
#3874
15K
9.32 mi11:04:271:02:246:4220:50
6:42
#3970
20K
12.43 mi11:25:271:23:246:4321:00
6:46
#3979
Half
13.11 mi11:29:591:27:566:424:32
6:39
#3961
25K
15.53 mi11:46:191:44:166:4316:20
6:44
#3880
30K
18.64 mi12:07:522:05:496:4521:33
6:56
#3850
20M
20.00 mi12:17:272:15:246:469:35
7:03
#3874
21M
21.00 mi12:24:582:22:556:487:31
7:31
#3918
35K
21.75 mi12:30:172:28:146:495:19
7:06
#4023
23M
23.00 mi12:39:282:37:256:519:11
7:20
#4152
24M
24.00 mi12:46:382:44:356:517:10
7:10
#4258
40K
24.85 mi12:53:052:51:026:536:27
7:33
#4358
25.2M
25.20 mi12:55:492:53:466:542:44
7:56
#4383
Finish
26.22 mi13:03:093:01:066:557:20
7:12
#4439
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi3536333433344187(Top 16%)3929(Top 26%)3929(Top 74%)
10K6.21 mi3.10 mi3874-3383648-3143648-3144285(Top 16%)4013(Top 26%)4013(Top 76%)
15K9.32 mi3.11 mi3970-963737-893737-894187(Top 16%)3929(Top 26%)3929(Top 74%)
20K12.43 mi3.11 mi3979-93745-83745-84080(Top 15%)3826(Top 25%)3826(Top 72%)
Half13.11 mi0.68 mi3961+183726+193726+193845(Top 14%)3629(Top 24%)3629(Top 69%)
25K15.53 mi2.42 mi3880+813658+683658+683661(Top 14%)3450(Top 23%)3450(Top 65%)
30K18.64 mi3.11 mi3850+303630+283630+283911(Top 15%)3660(Top 24%)3660(Top 69%)
20M20.00 mi1.36 mi3874-243649-193649-194338(Top 16%)3998(Top 26%)3998(Top 76%)
21M21.00 mi1.00 mi3918-443687-383687-384649(Top 17%)4215(Top 28%)4215(Top 80%)
35K21.75 mi0.75 mi4023-1053775-883775-885891(Top 22%)5144(Top 34%)5144(Top 97%)
23M23.00 mi1.25 mi4152-1293887-1123887-1125472(Top 21%)4809(Top 32%)4809(Top 91%)
24M24.00 mi1.00 mi4258-1063984-973984-975526(Top 21%)4788(Top 32%)4788(Top 91%)
40K24.85 mi0.85 mi4358-1004070-864070-866923(Top 26%)5576(Top 37%)5576(Top 106%)
25.2M25.20 mi0.35 mi4383-254090-204090-205983(Top 22%)4914(Top 32%)4914(Top 93%)
Finish26.22 mi1.02 mi4439-564134-444134-446355(Top 24%)5163(Top 34%)5163(Top 98%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 16%
×21story building
+97ft-345ft

Overall

4187

Males

3929

M18-39

3929

5K→10K

3.1 - 6.2 mi

Top 16%
×5story building
+79ft-138ft

Overall

4285

Males

4013

M18-39

4013

10K→15K

6.2 - 9.3 mi

Top 16%
×3story building
+67ft-78ft

Overall

4187

Males

3929

M18-39

3929

15K→20K

9.3 - 12.4 mi

Top 15%
×5story building
+106ft-86ft

Overall

4080

Males

3826

M18-39

3826

20K→Half

12.4 - 13.1 mi

Top 14%
×2story building
+19ft-37ft

Overall

3845

Males

3629

M18-39

3629

Half→25K

13.1 - 15.5 mi

Top 14%
×4story building
+66ft-88ft

Overall

3661

Males

3450

M18-39

3450

25K→30K

15.5 - 18.6 mi

Top 15%
×9story building
+181ft-148ft

Overall

3911

Males

3660

M18-39

3660

30K→20M

18.6 - 20.0 mi

Top 16%
×5story building
+64ft-50ft

Overall

4338

Males

3998

M18-39

3998

20M→21M

20.0 - 21.0 mi

Top 17%
×8story building
+106ft-24ft

Overall

4649

Males

4215

M18-39

4215

21M→35K

21.0 - 21.8 mi

Top 22%
×7story building
+17ft-86ft

Overall

5891

Males

5144

M18-39

5144

35K→23M

21.8 - 23.0 mi

Top 21%
×5story building
+23ft-63ft

Overall

5472

Males

4809

M18-39

4809

23M→24M

23.0 - 24.0 mi

Top 21%
×6story building
+12ft-82ft

Overall

5526

Males

4788

M18-39

4788

24M→40K

24.0 - 24.9 mi

Top 26%
×1story
+6ft-20ft

Overall

6923

Males

5576

M18-39

5576

40K→25.2M

24.9 - 25.2 mi

Top 22%
×1story
+13ft-16ft

Overall

5983

Males

4914

M18-39

4914

25.2M→Finish

25.2 - 26.2 mi

Top 24%
×2story building
+22ft-21ft

Overall

6355

Males

5163

M18-39

5163

Passing Analysis

Category:
Athletes Passed
799
Passed By
1702
Net Change
-903
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3536
5K → 10K88426-338#3536#3874
10K → 15K84180-96#3874#3970
15K → 20K109118-9#3970#3979
20K → Half279+18#3979#3961
Half → 25K11837+81#3961#3880
25K → 30K12898+30#3880#3850
30K → 20M5377-24#3850#3874
20M → 21M5599-44#3874#3918
21M → 35K14119-105#3918#4023
35K → 23M27156-129#4023#4152
23M → 24M26132-106#4152#4258
24M → 40K23123-100#4258#4358
40K → 25.2M2045-25#4358#4383
25.2M → Finish2783-56#4383#4439
TOTALS7991702-903
📊

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