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BOSTON MARATHON 2023

Paul Shifflett

VA

Bib: 12180 M

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 33%
Gender (Male)
#0 / 15176
Top 47%
Masters (Masters Men)
#0 / 9891
Top 35%
Division (M55-59)
#0 / 1422
Top 17%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
7:15/mi
22:32
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
7:13/mi
44:56
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
7:12/mi
1:07:18
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
7:15/mi
1:29:49
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
7:08/mi
1:34:41
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
7:30/mi
1:52:51
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
7:53/mi
2:17:22
↑ 181↓ 1480.2%
138 ft elev
20M
7:49/mi
2:28:00
↑ 64↓ 500.2%
148 ft elev
21M
8:25/mi
2:36:25
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
7:55/mi
2:42:20
↑ 17↓ 861.7%
156 ft elev
23M
8:14/mi
2:52:39
↑ 23↓ 630.6%
116 ft elev
24M
7:52/mi
3:00:31
↓ 821.3%
34 ft elev
40K· 24.85 mi
7:56/mi
3:07:18
↓ 200.3%
20 ft elev
25.2M
8:45/mi
3:10:19
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
7:48/mi
3:18:16
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:34:41
Pace7:13 /mi
2nd Half
Distance13.11 mi
Time1:43:35
Pace7:54 /mi
📊Positive Split: 9.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:50:2822:327:1522:32
7:15
-
10K
6.21 mi11:12:5244:567:1422:24
7:13
-0:02
15K
9.32 mi11:35:141:07:187:1322:22
7:12
-0:01
20K
12.43 mi11:57:451:29:497:1422:31
7:15
+0:03
Half
13.11 mi12:02:371:34:417:134:52
7:08
-0:07
25K
15.53 mi12:20:471:52:517:1618:10
7:30
+0:22
30K
18.64 mi12:45:182:17:227:2224:31
7:53
+0:23
20M
20.00 mi12:55:562:28:007:2410:38
7:49
-0:04
21M
21.00 mi13:04:212:36:257:278:25
8:25
+0:36
35K
21.75 mi13:10:162:42:207:285:55
7:55
-0:30
23M
23.00 mi13:20:352:52:397:3010:19
8:14
+0:19
24M
24.00 mi13:28:273:00:317:317:52
7:52
-0:22
40K
24.85 mi13:35:143:07:187:326:47
7:56
+0:04
25.2M
25.20 mi13:38:153:10:197:333:01
8:45
+0:49
Finish
26.22 mi13:46:123:18:167:347:57
7:48
-0:57

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

7:08 /mi

Average Pace

7:34 /mi

Slowest Pace

8:45 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:52:51

57% of race

Time at Steady Pace

1:03:40

32% of race

Time at Slower Pace

21:45

11% of race

Average Pace: 7:34 /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 mi10:50:2822:327:1522:32
7:15
#7813
10K
6.21 mi11:12:5244:567:1422:24
7:13
#7963
15K
9.32 mi11:35:141:07:187:1322:22
7:12
#7907
20K
12.43 mi11:57:451:29:497:1422:31
7:15
#7753
Half
13.11 mi12:02:371:34:417:134:52
7:08
#7713
25K
15.53 mi12:20:471:52:517:1618:10
7:30
#7820
30K
18.64 mi12:45:182:17:227:2224:31
7:53
#8141
20M
20.00 mi12:55:562:28:007:2410:38
7:49
#8175
21M
21.00 mi13:04:212:36:257:278:25
8:25
#8259
35K
21.75 mi13:10:162:42:207:285:55
7:55
#8370
23M
23.00 mi13:20:352:52:397:3010:19
8:14
#8523
24M
24.00 mi13:28:273:00:317:317:52
7:52
#8573
40K
24.85 mi13:35:143:07:187:326:47
7:56
#8595
25.2M
25.20 mi13:38:153:10:197:333:01
8:45
#8620
Finish
26.22 mi13:46:123:18:167:347:57
7:48
#8678
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi781368506850778467776777
10K6.21 mi3.10 mi7963-1506948-986948-98816770577057
15K9.32 mi3.11 mi7907+566898+506898+50778467776777
20K12.43 mi3.11 mi7753+1546781+1176781+117741465056505
Half13.11 mi0.68 mi7713+406751+306751+30738865086508
25K15.53 mi2.42 mi7820-1076800-496800-49872472787278
30K18.64 mi3.11 mi8141-3216961-1616961-1611004978467846
20M20.00 mi1.36 mi8175-346967-66967-6903972147214
21M21.00 mi1.00 mi8259-847000-337000-33992975587558
35K21.75 mi0.75 mi8370-1117062-627062-621140382938293
23M23.00 mi1.25 mi8523-1537132-707132-701143681838183
24M24.00 mi1.00 mi8573-507147-157147-151024575187518
40K24.85 mi0.85 mi8595-227140+77140+7955571027102
25.2M25.20 mi0.35 mi8620-257146-67146-61093377447744
Finish26.22 mi1.02 mi8678-587148-27148-21066176267626

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 29%
×21story building
+97ft-345ft

Overall

7784

Males

6777

M55-59

6777

5K→10K

3.1 - 6.2 mi

Top 31%
×5story building
+79ft-138ft

Overall

8167

Males

7057

M55-59

7057

10K→15K

6.2 - 9.3 mi

Top 29%
×3story building
+67ft-78ft

Overall

7784

Males

6777

M55-59

6777

15K→20K

9.3 - 12.4 mi

Top 28%
×5story building
+106ft-86ft

Overall

7414

Males

6505

M55-59

6505

20K→Half

12.4 - 13.1 mi

Top 28%
×2story building
+19ft-37ft

Overall

7388

Males

6508

M55-59

6508

Half→25K

13.1 - 15.5 mi

Top 33%
×4story building
+66ft-88ft

Overall

8724

Males

7278

M55-59

7278

25K→30K

15.5 - 18.6 mi

Top 38%
×9story building
+181ft-148ft

Overall

10049

Males

7846

M55-59

7846

30K→20M

18.6 - 20.0 mi

Top 34%
×5story building
+64ft-50ft

Overall

9039

Males

7214

M55-59

7214

20M→21M

20.0 - 21.0 mi

Top 37%
×8story building
+106ft-24ft

Overall

9929

Males

7558

M55-59

7558

21M→35K

21.0 - 21.8 mi

Top 43%
×7story building
+17ft-86ft

Overall

11403

Males

8293

M55-59

8293

35K→23M

21.8 - 23.0 mi

Top 43%
×5story building
+23ft-63ft

Overall

11436

Males

8183

M55-59

8183

23M→24M

23.0 - 24.0 mi

Top 38%
×6story building
+12ft-82ft

Overall

10245

Males

7518

M55-59

7518

24M→40K

24.0 - 24.9 mi

Top 36%
×1story
+6ft-20ft

Overall

9555

Males

7102

M55-59

7102

40K→25.2M

24.9 - 25.2 mi

Top 41%
×1story
+13ft-16ft

Overall

10933

Males

7744

M55-59

7744

25.2M→Finish

25.2 - 26.2 mi

Top 40%
×2story building
+22ft-21ft

Overall

10661

Males

7626

M55-59

7626

Passing Analysis

Category:
Athletes Passed
1016
Passed By
1881
Net Change
-865
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#7813
5K → 10K156306-150#7813#7963
10K → 15K162106+56#7963#7907
15K → 20K19642+154#7907#7753
20K → Half477+40#7753#7713
Half → 25K59166-107#7713#7820
25K → 30K49370-321#7820#8141
30K → 20M70104-34#8141#8175
20M → 21M45129-84#8175#8259
21M → 35K19130-111#8259#8370
35K → 23M46199-153#8370#8523
23M → 24M55105-50#8523#8573
24M → 40K4870-22#8573#8595
40K → 25.2M1944-25#8595#8620
25.2M → Finish45103-58#8620#8678
TOTALS10161881-865

Passing Charts

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