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BOSTON MARATHON 2023

Dave Sheldrick

Bib: 13597•M

ME

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 37%
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Top 40%
Division (M45-49)
#0 / 2252
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
7:41/mi
23:52
↑ 97↓ 3451.5%
10K· 6.21 mi
7:37/mi
47:32
↑ 79↓ 1380.4%
15K· 9.32 mi
7:37/mi
1:11:12
↑ 67↓ 78
20K· 12.43 mi
7:39/mi
1:34:58
↑ 106↓ 860.1%
Half· 13.11 mi
7:30/mi
1:40:05
↑ 19↓ 370.5%
25K· 15.53 mi
7:39/mi
1:58:37
↑ 66↓ 880.2%
30K· 18.64 mi
7:49/mi
2:22:55
↑ 181↓ 1480.2%
20M
7:53/mi
2:33:38
↑ 64↓ 500.2%
21M
8:05/mi
2:41:43
↑ 106↓ 241.6%
35K· 21.75 mi
7:40/mi
2:47:27
↑ 17↓ 861.7%
23M
7:54/mi
2:57:20
↑ 23↓ 630.6%
24M
7:39/mi
3:04:59
↓ 821.3%
40K· 24.85 mi
7:47/mi
3:11:38
↓ 200.3%
25.2M
8:27/mi
3:14:33
↑ 13↓ 160.2%
Finish· 26.22 mi
7:27/mi
3:22:09
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:40:05
Pace7:38 /mi
2nd Half
Distance13.11 mi
Time1:42:04
Pace7:47 /mi
📊Positive Split: 2.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:52:2823:527:4123:52
7:41
-
10K
6.21 mi11:16:0847:327:3923:40
7:37
-0:04
15K
9.32 mi11:39:481:11:127:3823:40
7:37
0:00
20K
12.43 mi12:03:341:34:587:3923:46
7:39
+0:02
Half
13.11 mi12:08:411:40:057:385:07
7:30
-0:09
25K
15.53 mi12:27:131:58:377:3818:32
7:39
+0:09
30K
18.64 mi12:51:312:22:557:4024:18
7:49
+0:10
20M
20.00 mi13:02:142:33:387:4110:43
7:53
+0:04
21M
21.00 mi13:10:192:41:437:428:05
8:05
+0:12
35K
21.75 mi13:16:032:47:277:425:44
7:40
-0:25
23M
23.00 mi13:25:562:57:207:439:53
7:54
+0:14
24M
24.00 mi13:33:353:04:597:427:39
7:39
-0:15
40K
24.85 mi13:40:143:11:387:436:39
7:47
+0:08
25.2M
25.20 mi13:43:093:14:337:432:55
8:27
+0:40
Finish
26.22 mi13:50:453:22:097:437:36
7:27
-1:00

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

7:27 /mi

Average Pace

7:43 /mi

Slowest Pace

8:27 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:19:14

99% of race

Time at Steady Pace

2:55

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:43 /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 mi10:52:2823:527:4123:52
7:41
#11276
10K
6.21 mi11:16:0847:327:3923:40
7:37
#11339
15K
9.32 mi11:39:481:11:127:3823:40
7:37
#11276
20K
12.43 mi12:03:341:34:587:3923:46
7:39
#11039
Half
13.11 mi12:08:411:40:057:385:07
7:30
#10999
25K
15.53 mi12:27:131:58:377:3818:32
7:39
#10785
30K
18.64 mi12:51:312:22:557:4024:18
7:49
#10491
20M
20.00 mi13:02:142:33:387:4110:43
7:53
#10413
21M
21.00 mi13:10:192:41:437:428:05
8:05
#10219
35K
21.75 mi13:16:032:47:277:425:44
7:40
#10190
23M
23.00 mi13:25:562:57:207:439:53
7:54
#10094
24M
24.00 mi13:33:353:04:597:427:39
7:39
#10005
40K
24.85 mi13:40:143:11:387:436:39
7:47
#9905
25.2M
25.20 mi13:43:093:14:337:432:55
8:27
#9883
Finish
26.22 mi13:50:453:22:097:437:36
7:27
#9775
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi112768783878311147(Top 42%)8700(Top 57%)8700(Top 386%)
10K6.21 mi3.10 mi11339-638810-278810-2711466(Top 43%)8860(Top 58%)8860(Top 393%)
15K9.32 mi3.11 mi11276+638780+308780+3011147(Top 42%)8700(Top 57%)8700(Top 386%)
20K12.43 mi3.11 mi11039+2378673+1078673+10710493(Top 39%)8335(Top 55%)8335(Top 370%)
Half13.11 mi0.68 mi10999+408651+228651+2210180(Top 38%)8192(Top 54%)8192(Top 364%)
25K15.53 mi2.42 mi10785+2148525+1268525+1269864(Top 37%)7906(Top 52%)7906(Top 351%)
30K18.64 mi3.11 mi10491+2948328+1978328+1979518(Top 36%)7572(Top 50%)7572(Top 336%)
20M20.00 mi1.36 mi10413+788272+568272+569454(Top 36%)7445(Top 49%)7445(Top 331%)
21M21.00 mi1.00 mi10219+1948151+1218151+1217893(Top 30%)6423(Top 42%)6423(Top 285%)
35K21.75 mi0.75 mi10190+298124+278124+279674(Top 36%)7446(Top 49%)7446(Top 331%)
23M23.00 mi1.25 mi10094+968037+878037+879019(Top 34%)6973(Top 46%)6973(Top 310%)
24M24.00 mi1.00 mi10005+897954+837954+838741(Top 33%)6759(Top 45%)6759(Top 300%)
40K24.85 mi0.85 mi9905+1007876+787876+788514(Top 32%)6566(Top 43%)6566(Top 292%)
25.2M25.20 mi0.35 mi9883+227848+287848+289206(Top 35%)6866(Top 45%)6866(Top 305%)
Finish26.22 mi1.02 mi9775+1087765+837765+838228(Top 31%)6301(Top 42%)6301(Top 280%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 42%
×21story building
+97ft-345ft

Overall

11147

Males

8700

M45-49

8700

5K→10K

3.1 - 6.2 mi

Top 43%
×5story building
+79ft-138ft

Overall

11466

Males

8860

M45-49

8860

10K→15K

6.2 - 9.3 mi

Top 42%
×3story building
+67ft-78ft

Overall

11147

Males

8700

M45-49

8700

15K→20K

9.3 - 12.4 mi

Top 39%
×5story building
+106ft-86ft

Overall

10493

Males

8335

M45-49

8335

20K→Half

12.4 - 13.1 mi

Top 38%
×2story building
+19ft-37ft

Overall

10180

Males

8192

M45-49

8192

Half→25K

13.1 - 15.5 mi

Top 37%
×4story building
+66ft-88ft

Overall

9864

Males

7906

M45-49

7906

25K→30K

15.5 - 18.6 mi

Top 36%
×9story building
+181ft-148ft

Overall

9518

Males

7572

M45-49

7572

30K→20M

18.6 - 20.0 mi

Top 36%
×5story building
+64ft-50ft

Overall

9454

Males

7445

M45-49

7445

20M→21M

20.0 - 21.0 mi

Top 30%
×8story building
+106ft-24ft

Overall

7893

Males

6423

M45-49

6423

21M→35K

21.0 - 21.8 mi

Top 36%
×7story building
+17ft-86ft

Overall

9674

Males

7446

M45-49

7446

35K→23M

21.8 - 23.0 mi

Top 34%
×5story building
+23ft-63ft

Overall

9019

Males

6973

M45-49

6973

23M→24M

23.0 - 24.0 mi

Top 33%
×6story building
+12ft-82ft

Overall

8741

Males

6759

M45-49

6759

24M→40K

24.0 - 24.9 mi

Top 32%
×1story
+6ft-20ft

Overall

8514

Males

6566

M45-49

6566

40K→25.2M

24.9 - 25.2 mi

Top 35%
×1story
+13ft-16ft

Overall

9206

Males

6866

M45-49

6866

25.2M→Finish

25.2 - 26.2 mi

Top 31%
×2story building
+22ft-21ft

Overall

8228

Males

6301

M45-49

6301

Passing Analysis

Category:
Athletes Passed
2319*
Passed By
817
Net Change
+1501
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11276
5K → 10K274337-63#11276#11339
10K → 15K210147+63#11339#11276
15K → 20K28952+237#11276#11039
20K → Half444+40#11039#10999
Half → 25K24127+214#10999#10785
25K → 30K33945+294#10785#10491
30K → 20M118*40+78#10491#10413
20M → 21M20410+194#10413#10219
21M → 35K5930+29#10219#10190
35K → 23M13135+96#10190#10094
23M → 24M11626+89#10094#10005
24M → 40K124*24+100#10005#9905
40K → 25.2M3917+22#9905#9883
25.2M → Finish131*23+108#9883#9775
TOTALS2319*817+1501

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

📊

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