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BOSTON MARATHON 2023

Anthony Shields

Bib: 29170•M

MA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 36%
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Top 39%
Division (M40-44)
#0 / 2241
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:31
Rank: #10242
Start → 5K
23:31 | 7:34/mi
10K· 6.21 mi
45:48
Rank: #8975 (+1267)
5K → 10K
22:17 | 7:10/mi
15K· 9.32 mi
1:08:37
Rank: #8922 (+53)
10K → 15K
22:49 | 7:21/mi
20K· 12.43 mi
1:31:44
Rank: #8858 (+64)
15K → 20K
23:07 | 7:26/mi
Half· 13.11 mi
1:36:51
Rank: #8910 (-52)
20K → Half
5:07 | 7:30/mi
25K· 15.53 mi
1:55:15
Rank: #8968 (-58)
Half → 25K
18:24 | 7:35/mi
30K· 18.64 mi
2:20:41
Rank: #9557 (-589)
25K → 30K
25:26 | 8:11/mi
20M
2:31:39
Rank: #9618 (-61)
30K → 20M
10:58 | 8:04/mi
21M
2:40:16
Rank: #9682 (-64)
20M → 21M
8:37 | 8:37/mi
35K· 21.75 mi
2:46:14
Rank: #9735 (-53)
21M → 35K
5:58 | 7:59/mi
23M
2:56:24
Rank: #9768 (-33)
35K → 23M
10:10 | 8:07/mi
24M
3:04:15
Rank: #9743 (+25)
23M → 24M
7:51 | 7:51/mi
40K· 24.85 mi
3:10:55
Rank: #9676 (+67)
24M → 40K
6:40 | 7:48/mi
25.2M
3:13:45
Rank: #9619 (+57)
40K → 25.2M
2:50 | 8:13/mi
Finish· 26.22 mi
3:21:17
Rank: #9524 (+95)
25.2M → Finish
7:32 | 7:24/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:36:51
Pace7:23 /mi
2nd Half
Distance13.11 mi
Time1:44:26
Pace7:58 /mi
📊Positive Split: 7.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:46:2123:317:3423:31
7:34
-
10K
6.21 mi12:08:3845:487:2222:17
7:10
-0:24
15K
9.32 mi12:31:271:08:377:2222:49
7:21
+0:11
20K
12.43 mi12:54:341:31:447:2323:07
7:26
+0:05
Half
13.11 mi12:59:411:36:517:235:07
7:30
+0:04
25K
15.53 mi13:18:051:55:157:2518:24
7:35
+0:05
30K
18.64 mi13:43:312:20:417:3325:26
8:11
+0:36
20M
20.00 mi13:54:292:31:397:3510:58
8:04
-0:07
21M
21.00 mi14:03:062:40:167:388:37
8:37
+0:33
35K
21.75 mi14:09:042:46:147:395:58
7:59
-0:38
23M
23.00 mi14:19:142:56:247:4010:10
8:07
+0:08
24M
24.00 mi14:27:053:04:157:417:51
7:51
-0:16
40K
24.85 mi14:33:453:10:557:416:40
7:48
-0:03
25.2M
25.20 mi14:36:353:13:457:412:50
8:13
+0:25
Finish
26.22 mi14:44:073:21:177:417:32
7:24
-0:49

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

7:10 /mi

Average Pace

7:41 /mi

Slowest Pace

8:37 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:02:47

61% of race

Time at Steady Pace

20:29

10% of race

Time at Slower Pace

58:01

29% of race

Average Pace: 7:41 /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 mi11:46:2123:317:3423:31
7:34
#10242
10K
6.21 mi12:08:3845:487:2222:17
7:10
#8975
15K
9.32 mi12:31:271:08:377:2222:49
7:21
#8922
20K
12.43 mi12:54:341:31:447:2323:07
7:26
#8858
Half
13.11 mi12:59:411:36:517:235:07
7:30
#8910
25K
15.53 mi13:18:051:55:157:2518:24
7:35
#8968
30K
18.64 mi13:43:312:20:417:3325:26
8:11
#9557
20M
20.00 mi13:54:292:31:397:3510:58
8:04
#9618
21M
21.00 mi14:03:062:40:167:388:37
8:37
#9682
35K
21.75 mi14:09:042:46:147:395:58
7:59
#9735
23M
23.00 mi14:19:142:56:247:4010:10
8:07
#9768
24M
24.00 mi14:27:053:04:157:417:51
7:51
#9743
40K
24.85 mi14:33:453:10:557:416:40
7:48
#9676
25.2M
25.20 mi14:36:353:13:457:412:50
8:13
#9619
Finish
26.22 mi14:44:073:21:177:417:32
7:24
#9524
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi10242825282528901(Top 33%)7478(Top 49%)7478(Top 334%)
10K6.21 mi3.10 mi8975+12677563+6897563+6897910(Top 30%)6878(Top 45%)6878(Top 307%)
15K9.32 mi3.11 mi8922+537512+517512+518901(Top 33%)7478(Top 49%)7478(Top 334%)
20K12.43 mi3.11 mi8858+647470+427470+428827(Top 33%)7398(Top 49%)7398(Top 330%)
Half13.11 mi0.68 mi8910-527492-227492-2210174(Top 38%)8186(Top 54%)8186(Top 365%)
25K15.53 mi2.42 mi8968-587525-337525-339451(Top 36%)7683(Top 51%)7683(Top 343%)
30K18.64 mi3.11 mi9557-5897841-3167841-31612227(Top 46%)8890(Top 59%)8890(Top 397%)
20M20.00 mi1.36 mi9618-617846-57846-510772(Top 40%)8132(Top 54%)8132(Top 363%)
21M21.00 mi1.00 mi9682-647874-287874-2811116(Top 42%)8165(Top 54%)8165(Top 364%)
35K21.75 mi0.75 mi9735-537883-97883-911889(Top 45%)8500(Top 56%)8500(Top 379%)
23M23.00 mi1.25 mi9768-337858+257858+2510575(Top 40%)7751(Top 51%)7751(Top 346%)
24M24.00 mi1.00 mi9743+257822+367822+3610122(Top 38%)7456(Top 49%)7456(Top 333%)
40K24.85 mi0.85 mi9676+677761+617761+618652(Top 32%)6636(Top 44%)6636(Top 296%)
25.2M25.20 mi0.35 mi9619+577709+527709+527768(Top 29%)6044(Top 40%)6044(Top 270%)
Finish26.22 mi1.02 mi9524+957637+727637+727729(Top 29%)6015(Top 40%)6015(Top 268%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 33%
×21stories
+97ft-345ft

Overall

8901

Males

7478

M40-44

7478

5K→10K

3.1 - 6.2 mi

Top 30%
×5stories
+79ft-138ft

Overall

7910

Males

6878

M40-44

6878

10K→15K

6.2 - 9.3 mi

Top 33%
×3stories
+67ft-78ft

Overall

8901

Males

7478

M40-44

7478

15K→20K

9.3 - 12.4 mi

Top 33%
×5stories
+106ft-86ft

Overall

8827

Males

7398

M40-44

7398

20K→Half

12.4 - 13.1 mi

Top 38%
×2stories
+19ft-37ft

Overall

10174

Males

8186

M40-44

8186

Half→25K

13.1 - 15.5 mi

Top 36%
×4stories
+66ft-88ft

Overall

9451

Males

7683

M40-44

7683

25K→30K

15.5 - 18.6 mi

Top 46%
×9stories
+181ft-148ft

Overall

12227

Males

8890

M40-44

8890

30K→20M

18.6 - 20.0 mi

Top 40%
×5stories
+64ft-50ft

Overall

10772

Males

8132

M40-44

8132

20M→21M

20.0 - 21.0 mi

Top 42%
×8stories
+106ft-24ft

Overall

11116

Males

8165

M40-44

8165

21M→35K

21.0 - 21.8 mi

Top 45%
×7stories
+17ft-86ft

Overall

11889

Males

8500

M40-44

8500

35K→23M

21.8 - 23.0 mi

Top 40%
×5stories
+23ft-63ft

Overall

10575

Males

7751

M40-44

7751

23M→24M

23.0 - 24.0 mi

Top 38%
×6stories
+12ft-82ft

Overall

10122

Males

7456

M40-44

7456

24M→40K

24.0 - 24.9 mi

Top 32%
×1story
+6ft-20ft

Overall

8652

Males

6636

M40-44

6636

40K→25.2M

24.9 - 25.2 mi

Top 29%
×1story
+13ft-16ft

Overall

7768

Males

6044

M40-44

6044

25.2M→Finish

25.2 - 26.2 mi

Top 29%
×2stories
+22ft-21ft

Overall

7729

Males

6015

M40-44

6015

Passing Analysis

Category:
Athletes Passed
2354*
Passed By
1636
Net Change
+718
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10242
5K → 10K1291*24+1267#10242#8975
10K → 15K169116+53#8975#8922
15K → 20K15692+64#8922#8858
20K → Half1264-52#8858#8910
Half → 25K88146-58#8910#8968
25K → 30K56645-589#8968#9557
30K → 20M61122-61#9557#9618
20M → 21M52116-64#9618#9682
21M → 35K2780-53#9682#9735
35K → 23M87120-33#9735#9768
23M → 24M6843+25#9768#9743
24M → 40K99*32+67#9743#9676
40K → 25.2M7215+57#9676#9619
25.2M → Finish11621+95#9619#9524
TOTALS2354*1636+718

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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