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BOSTON MARATHON 2023

William Costello

Bib: 21973•M

NC

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M60-64)
#0 / 1110
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
26:26
Rank: #17598
Start → 5K
26:26 | 8:30/mi
10K· 6.21 mi
52:55
Rank: #17991 (-393)
5K → 10K
26:29 | 8:31/mi
15K· 9.32 mi
1:19:33
Rank: #18072 (-81)
10K → 15K
26:38 | 8:34/mi
20K· 12.43 mi
1:46:33
Rank: #18042 (+30)
15K → 20K
27:00 | 8:41/mi
Half· 13.11 mi
1:52:31
Rank: #18100 (-58)
20K → Half
5:58 | 8:45/mi
25K· 15.53 mi
2:13:51
Rank: #18052 (+48)
Half → 25K
21:20 | 8:48/mi
30K· 18.64 mi
2:42:32
Rank: #18101 (-49)
25K → 30K
28:41 | 9:14/mi
20M
2:54:54
Rank: #18000 (+101)
30K → 20M
12:22 | 9:06/mi
21M
3:04:41
Rank: #17942 (+58)
20M → 21M
9:47 | 9:47/mi
35K· 21.75 mi
3:11:14
Rank: #17896 (+46)
21M → 35K
6:33 | 8:45/mi
23M
3:23:10
Rank: #17970 (-74)
35K → 23M
11:56 | 9:32/mi
24M
3:32:22
Rank: #17973 (-3)
23M → 24M
9:12 | 9:12/mi
40K· 24.85 mi
3:40:09
Rank: #17931 (+42)
24M → 40K
7:47 | 9:06/mi
25.2M
3:43:36
Rank: #17916 (+15)
40K → 25.2M
3:27 | 10:00/mi
Finish· 26.22 mi
3:53:11
Rank: #18012 (-96)
25.2M → Finish
9:35 | 9:24/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:52:31
Pace8:35 /mi
2nd Half
Distance13.11 mi
Time2:00:40
Pace9:12 /mi
📊Positive Split: 7.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:21:5926:268:3026:26
8:30
-
10K
6.21 mi11:48:2852:558:3126:29
8:31
+0:01
15K
9.32 mi12:15:061:19:338:3226:38
8:34
+0:03
20K
12.43 mi12:42:061:46:338:3427:00
8:41
+0:07
Half
13.11 mi12:48:041:52:318:355:58
8:45
+0:04
25K
15.53 mi13:09:242:13:518:3721:20
8:48
+0:03
30K
18.64 mi13:38:052:42:328:4328:41
9:14
+0:26
20M
20.00 mi13:50:272:54:548:4512:22
9:06
-0:08
21M
21.00 mi14:00:143:04:418:489:47
9:47
+0:41
35K
21.75 mi14:06:473:11:148:486:33
8:45
-1:02
23M
23.00 mi14:18:433:23:108:5011:56
9:32
+0:47
24M
24.00 mi14:27:553:32:228:519:12
9:12
-0:20
40K
24.85 mi14:35:423:40:098:517:47
9:06
-0:06
25.2M
25.20 mi14:39:093:43:368:523:27
10:00
+0:54
Finish
26.22 mi14:48:443:53:118:549:35
9:24
-0:36

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

8:30 /mi

Average Pace

8:54 /mi

Slowest Pace

10:00 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:18:26

85% of race

Time at Steady Pace

34:45

15% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:54 /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 mi11:21:5926:268:3026:26
8:30
#17598
10K
6.21 mi11:48:2852:558:3126:29
8:31
#17991
15K
9.32 mi12:15:061:19:338:3226:38
8:34
#18072
20K
12.43 mi12:42:061:46:338:3427:00
8:41
#18042
Half
13.11 mi12:48:041:52:318:355:58
8:45
#18100
25K
15.53 mi13:09:242:13:518:3721:20
8:48
#18052
30K
18.64 mi13:38:052:42:328:4328:41
9:14
#18101
20M
20.00 mi13:50:272:54:548:4512:22
9:06
#18000
21M
21.00 mi14:00:143:04:418:489:47
9:47
#17942
35K
21.75 mi14:06:473:11:148:486:33
8:45
#17896
23M
23.00 mi14:18:433:23:108:5011:56
9:32
#17970
24M
24.00 mi14:27:553:32:228:519:12
9:12
#17973
40K
24.85 mi14:35:423:40:098:517:47
9:06
#17931
25.2M
25.20 mi14:39:093:43:368:523:27
10:00
#17916
Finish
26.22 mi14:48:443:53:118:549:35
9:24
#18012
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM60-64Seg. OverallSeg. MalesSeg. M60-64
5K3.11 mi3.11 mi17598112651126518270(Top 69%)11594(Top 76%)11594(Top 1045%)
10K6.21 mi3.10 mi17991-39311440-17511440-17518390(Top 69%)11659(Top 77%)11659(Top 1050%)
15K9.32 mi3.11 mi18072-8111483-4311483-4318270(Top 69%)11594(Top 76%)11594(Top 1045%)
20K12.43 mi3.11 mi18042+30114831148318051(Top 68%)11491(Top 76%)11491(Top 1035%)
Half13.11 mi0.68 mi18100-5811511-2811511-2819148(Top 72%)11945(Top 79%)11945(Top 1076%)
25K15.53 mi2.42 mi18052+4811467+4411467+4417930(Top 67%)11386(Top 75%)11386(Top 1026%)
30K18.64 mi3.11 mi18101-4911452+1511452+1518301(Top 69%)11467(Top 76%)11467(Top 1033%)
20M20.00 mi1.36 mi18000+10111393+5911393+5917045(Top 64%)10841(Top 71%)10841(Top 977%)
21M21.00 mi1.00 mi17942+5811365+2811365+2817183(Top 65%)10869(Top 72%)10869(Top 979%)
35K21.75 mi0.75 mi17896+4611339+2611339+2616693(Top 63%)10579(Top 70%)10579(Top 953%)
23M23.00 mi1.25 mi17970-7411355-1611355-1618436(Top 69%)11319(Top 75%)11319(Top 1020%)
24M24.00 mi1.00 mi17973-311343+1211343+1218051(Top 68%)11102(Top 73%)11102(Top 1000%)
40K24.85 mi0.85 mi17931+4211316+2711316+2716636(Top 62%)10419(Top 69%)10419(Top 939%)
25.2M25.20 mi0.35 mi17916+1511308+811308+817362(Top 65%)10715(Top 71%)10715(Top 965%)
Finish26.22 mi1.02 mi18012-9611333-2511333-2519761(Top 74%)11866(Top 78%)11866(Top 1069%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 69%
×21stories
+97ft-345ft

Overall

18270

Males

11594

M60-64

11594

5K→10K

3.1 - 6.2 mi

Top 69%
×5stories
+79ft-138ft

Overall

18390

Males

11659

M60-64

11659

10K→15K

6.2 - 9.3 mi

Top 69%
×3stories
+67ft-78ft

Overall

18270

Males

11594

M60-64

11594

15K→20K

9.3 - 12.4 mi

Top 68%
×5stories
+106ft-86ft

Overall

18051

Males

11491

M60-64

11491

20K→Half

12.4 - 13.1 mi

Top 72%
×2stories
+19ft-37ft

Overall

19148

Males

11945

M60-64

11945

Half→25K

13.1 - 15.5 mi

Top 67%
×4stories
+66ft-88ft

Overall

17930

Males

11386

M60-64

11386

25K→30K

15.5 - 18.6 mi

Top 69%
×9stories
+181ft-148ft

Overall

18301

Males

11467

M60-64

11467

30K→20M

18.6 - 20.0 mi

Top 64%
×5stories
+64ft-50ft

Overall

17045

Males

10841

M60-64

10841

20M→21M

20.0 - 21.0 mi

Top 65%
×8stories
+106ft-24ft

Overall

17183

Males

10869

M60-64

10869

21M→35K

21.0 - 21.8 mi

Top 63%
×7stories
+17ft-86ft

Overall

16693

Males

10579

M60-64

10579

35K→23M

21.8 - 23.0 mi

Top 69%
×5stories
+23ft-63ft

Overall

18436

Males

11319

M60-64

11319

23M→24M

23.0 - 24.0 mi

Top 68%
×6stories
+12ft-82ft

Overall

18051

Males

11102

M60-64

11102

24M→40K

24.0 - 24.9 mi

Top 62%
×1story
+6ft-20ft

Overall

16636

Males

10419

M60-64

10419

40K→25.2M

24.9 - 25.2 mi

Top 65%
×1story
+13ft-16ft

Overall

17362

Males

10715

M60-64

10715

25.2M→Finish

25.2 - 26.2 mi

Top 74%
×2stories
+22ft-21ft

Overall

19761

Males

11866

M60-64

11866

Passing Analysis

Category:
Athletes Passed
1395
Passed By
1809
Net Change
-414
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17598
5K → 10K162555-393#17598#17991
10K → 15K154235-81#17991#18072
15K → 20K185155+30#18072#18042
20K → Half1371-58#18042#18100
Half → 25K148100+48#18100#18052
25K → 30K179228-49#18052#18101
30K → 20M13332+101#18101#18000
20M → 21M11658+58#18000#17942
21M → 35K6519+46#17942#17896
35K → 23M67141-74#17896#17970
23M → 24M4346-3#17970#17973
24M → 40K7129+42#17973#17931
40K → 25.2M3520+15#17931#17916
25.2M → Finish24120-96#17916#18012
TOTALS13951809-414
📊

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