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BOSTON MARATHON 2023

Shannon Macmaster

Bib: 8211•F

MD

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 18%
Gender (Female)
#0 / 11423
Top 3%
Division (F18-39)
#0 / 4884
Top 6%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:32
Rank: #5810
Start → 5K
21:32 | 6:56/mi
10K· 6.21 mi
42:47
Rank: #5712 (+98)
5K → 10K
21:15 | 6:50/mi
15K· 9.32 mi
1:03:51
Rank: #5487 (+225)
10K → 15K
21:04 | 6:47/mi
20K· 12.43 mi
1:25:04
Rank: #5284 (+203)
15K → 20K
21:13 | 6:50/mi
Half· 13.11 mi
1:29:40
Rank: #5265 (+19)
20K → Half
4:36 | 6:45/mi
25K· 15.53 mi
1:46:06
Rank: #5000 (+265)
Half → 25K
16:26 | 6:47/mi
30K· 18.64 mi
2:07:50
Rank: #4818 (+182)
25K → 30K
21:44 | 7:00/mi
20M
2:17:22
Rank: #4748 (+70)
30K → 20M
9:32 | 7:01/mi
21M
2:24:51
Rank: #4716 (+32)
20M → 21M
7:29 | 7:29/mi
35K· 21.75 mi
2:30:01
Rank: #4706 (+10)
21M → 35K
5:10 | 6:54/mi
23M
2:39:15
Rank: #4747 (-41)
35K → 23M
9:14 | 7:22/mi
24M
2:46:15
Rank: #4727 (+20)
23M → 24M
7:00 | 7:00/mi
40K· 24.85 mi
2:52:33
Rank: #4727
24M → 40K
6:18 | 7:22/mi
25.2M
2:55:21
Rank: #4753 (-26)
40K → 25.2M
2:48 | 8:07/mi
Finish· 26.22 mi
3:02:55
Rank: #4819 (-66)
25.2M → Finish
7:34 | 7:26/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:29:40
Pace6:50 /mi
2nd Half
Distance13.11 mi
Time1:33:15
Pace7:07 /mi
📊Positive Split: 4.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:46:4321:326:5621:32
6:56
-
10K
6.21 mi11:07:5842:476:5321:15
6:50
-0:06
15K
9.32 mi11:29:021:03:516:5121:04
6:47
-0:03
20K
12.43 mi11:50:151:25:046:5121:13
6:50
+0:03
Half
13.11 mi11:54:511:29:406:504:36
6:45
-0:05
25K
15.53 mi12:11:171:46:066:5016:26
6:47
+0:02
30K
18.64 mi12:33:012:07:506:5121:44
7:00
+0:13
20M
20.00 mi12:42:332:17:226:529:32
7:01
+0:01
21M
21.00 mi12:50:022:24:516:547:29
7:29
+0:28
35K
21.75 mi12:55:122:30:016:545:10
6:54
-0:35
23M
23.00 mi13:04:262:39:156:559:14
7:22
+0:28
24M
24.00 mi13:11:262:46:156:567:00
7:00
-0:22
40K
24.85 mi13:17:442:52:336:576:18
7:22
+0:22
25.2M
25.20 mi13:20:322:55:216:582:48
8:07
+0:45
Finish
26.22 mi13:28:063:02:556:597:34
7:26
-0:41

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

6:45 /mi

Average Pace

6:59 /mi

Slowest Pace

8:07 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

42:06

23% of race

Time at Steady Pace

1:47:26

59% of race

Time at Slower Pace

33:23

18% of race

Average Pace: 6:59 /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 mi10:46:4321:326:5621:32
6:56
#5810
10K
6.21 mi11:07:5842:476:5321:15
6:50
#5712
15K
9.32 mi11:29:021:03:516:5121:04
6:47
#5487
20K
12.43 mi11:50:151:25:046:5121:13
6:50
#5284
Half
13.11 mi11:54:511:29:406:504:36
6:45
#5265
25K
15.53 mi12:11:171:46:066:5016:26
6:47
#5000
30K
18.64 mi12:33:012:07:506:5121:44
7:00
#4818
20M
20.00 mi12:42:332:17:226:529:32
7:01
#4748
21M
21.00 mi12:50:022:24:516:547:29
7:29
#4716
35K
21.75 mi12:55:122:30:016:545:10
6:54
#4706
23M
23.00 mi13:04:262:39:156:559:14
7:22
#4747
24M
24.00 mi13:11:262:46:156:567:00
7:00
#4727
40K
24.85 mi13:17:442:52:336:576:18
7:22
#4727
25.2M
25.20 mi13:20:322:55:216:582:48
8:07
#4753
Finish
26.22 mi13:28:063:02:556:597:34
7:26
#4819
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi58104704704954(Top 19%)348(Top 3%)348(Top 7%)
10K6.21 mi3.10 mi5712+98456+14456+145671(Top 21%)464(Top 4%)464(Top 10%)
15K9.32 mi3.11 mi5487+225415+41415+414954(Top 19%)348(Top 3%)348(Top 7%)
20K12.43 mi3.11 mi5284+203385+30385+304737(Top 18%)330(Top 3%)330(Top 7%)
Half13.11 mi0.68 mi5265+19383+2383+24857(Top 18%)351(Top 3%)351(Top 7%)
25K15.53 mi2.42 mi5000+265352+31352+313977(Top 15%)245(Top 2%)245(Top 5%)
30K18.64 mi3.11 mi4818+182331+21331+214329(Top 16%)305(Top 3%)305(Top 6%)
20M20.00 mi1.36 mi4748+70323+8323+84145(Top 16%)314(Top 3%)314(Top 6%)
21M21.00 mi1.00 mi4716+32319+4319+44520(Top 17%)401(Top 4%)401(Top 8%)
35K21.75 mi0.75 mi4706+10322-3322-34849(Top 18%)465(Top 4%)465(Top 10%)
23M23.00 mi1.25 mi4747-41332-10332-105738(Top 22%)721(Top 6%)721(Top 15%)
24M24.00 mi1.00 mi4727+20333-1333-14699(Top 18%)487(Top 4%)487(Top 10%)
40K24.85 mi0.85 mi4727341-8341-85902(Top 22%)933(Top 8%)933(Top 19%)
25.2M25.20 mi0.35 mi4753-26353-12353-127237(Top 27%)1481(Top 13%)1481(Top 30%)
Finish26.22 mi1.02 mi4819-66372-19372-197971(Top 30%)1801(Top 16%)1801(Top 37%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 19%
×21stories
+97ft-345ft

Overall

4954

Females

348

F18-39

348

5K→10K

3.1 - 6.2 mi

Top 21%
×5stories
+79ft-138ft

Overall

5671

Females

464

F18-39

464

10K→15K

6.2 - 9.3 mi

Top 19%
×3stories
+67ft-78ft

Overall

4954

Females

348

F18-39

348

15K→20K

9.3 - 12.4 mi

Top 18%
×5stories
+106ft-86ft

Overall

4737

Females

330

F18-39

330

20K→Half

12.4 - 13.1 mi

Top 18%
×2stories
+19ft-37ft

Overall

4857

Females

351

F18-39

351

Half→25K

13.1 - 15.5 mi

Top 15%
×4stories
+66ft-88ft

Overall

3977

Females

245

F18-39

245

25K→30K

15.5 - 18.6 mi

Top 16%
×9stories
+181ft-148ft

Overall

4329

Females

305

F18-39

305

30K→20M

18.6 - 20.0 mi

Top 16%
×5stories
+64ft-50ft

Overall

4145

Females

314

F18-39

314

20M→21M

20.0 - 21.0 mi

Top 17%
×8stories
+106ft-24ft

Overall

4520

Females

401

F18-39

401

21M→35K

21.0 - 21.8 mi

Top 18%
×7stories
+17ft-86ft

Overall

4849

Females

465

F18-39

465

35K→23M

21.8 - 23.0 mi

Top 22%
×5stories
+23ft-63ft

Overall

5738

Females

721

F18-39

721

23M→24M

23.0 - 24.0 mi

Top 18%
×6stories
+12ft-82ft

Overall

4699

Females

487

F18-39

487

24M→40K

24.0 - 24.9 mi

Top 22%
×1story
+6ft-20ft

Overall

5902

Females

933

F18-39

933

40K→25.2M

24.9 - 25.2 mi

Top 27%
×1story
+13ft-16ft

Overall

7237

Females

1481

F18-39

1481

25.2M→Finish

25.2 - 26.2 mi

Top 30%
×2stories
+22ft-21ft

Overall

7971

Females

1801

F18-39

1801

Passing Analysis

Category:
Athletes Passed
1670
Passed By
679
Net Change
+991
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5810
5K → 10K248150+98#5810#5712
10K → 15K26338+225#5712#5487
15K → 20K22017+203#5487#5284
20K → Half3011+19#5284#5265
Half → 25K2716+265#5265#5000
25K → 30K23654+182#5000#4818
30K → 20M10030+70#4818#4748
20M → 21M6735+32#4748#4716
21M → 35K4333+10#4716#4706
35K → 23M5899-41#4706#4747
23M → 24M5737+20#4747#4727
24M → 40K41410#4727#4727
40K → 25.2M935-26#4727#4753
25.2M → Finish2793-66#4753#4819
TOTALS1670679+991
📊

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