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BOSTON MARATHON 2023

Shaun Chillingworth

Bib: 15490•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M50-54)
#0 / 2052
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
8:47/mi
27:17
↑ 97↓ 3451.5%
10K· 6.21 mi
8:13/mi
52:48
↑ 79↓ 1380.4%
15K· 9.32 mi
8:30/mi
1:19:12
↑ 67↓ 78
20K· 12.43 mi
8:35/mi
1:45:53
↑ 106↓ 860.1%
Half· 13.11 mi
8:37/mi
1:51:46
↑ 19↓ 370.5%
25K· 15.53 mi
9:00/mi
2:13:35
↑ 66↓ 880.2%
30K· 18.64 mi
8:56/mi
2:41:19
↑ 181↓ 1480.2%
20M
9:30/mi
2:54:14
↑ 64↓ 500.2%
21M
9:37/mi
3:03:51
↑ 106↓ 241.6%
35K· 21.75 mi
8:43/mi
3:10:22
↑ 17↓ 861.7%
23M
8:38/mi
3:21:11
↑ 23↓ 630.6%
24M
8:37/mi
3:29:48
↓ 821.3%
40K· 24.85 mi
8:46/mi
3:37:18
↓ 200.3%
25.2M
9:37/mi
3:40:37
↑ 13↓ 160.2%
Finish· 26.22 mi
8:30/mi
3:49:17
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:51:46
Pace8:32 /mi
2nd Half
Distance13.11 mi
Time1:57:31
Pace8:58 /mi
📊Positive Split: 5.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:56:5927:178:4727:17
8:47
-
10K
6.21 mi11:22:3052:488:3025:31
8:13
-0:34
15K
9.32 mi11:48:541:19:128:3026:24
8:30
+0:17
20K
12.43 mi12:15:351:45:538:3126:41
8:35
+0:05
Half
13.11 mi12:21:281:51:468:325:53
8:37
+0:02
25K
15.53 mi12:43:172:13:358:3621:49
9:00
+0:23
30K
18.64 mi13:11:012:41:198:3927:44
8:56
-0:04
20M
20.00 mi13:23:562:54:148:4312:55
9:30
+0:34
21M
21.00 mi13:33:333:03:518:459:37
9:37
+0:07
35K
21.75 mi13:40:043:10:228:456:31
8:43
-0:54
23M
23.00 mi13:50:533:21:118:4510:49
8:38
-0:05
24M
24.00 mi13:59:303:29:488:458:37
8:37
-0:01
40K
24.85 mi14:07:003:37:188:457:30
8:46
+0:09
25.2M
25.20 mi14:10:193:40:378:453:19
9:37
+0:51
Finish
26.22 mi14:18:593:49:178:458:40
8:30
-1:07

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

8:13 /mi

Average Pace

8:45 /mi

Slowest Pace

9:37 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:23:26

89% of race

Time at Steady Pace

25:51

11% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:45 /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 mi10:56:5927:178:4727:17
8:47
#19351
10K
6.21 mi11:22:3052:488:3025:31
8:13
#17889
15K
9.32 mi11:48:541:19:128:3026:24
8:30
#17838
20K
12.43 mi12:15:351:45:538:3126:41
8:35
#17692
Half
13.11 mi12:21:281:51:468:325:53
8:37
#17711
25K
15.53 mi12:43:172:13:358:3621:49
9:00
#17939
30K
18.64 mi13:11:012:41:198:3927:44
8:56
#17676
20M
20.00 mi13:23:562:54:148:4312:55
9:30
#17787
21M
21.00 mi13:33:333:03:518:459:37
9:37
#17711
35K
21.75 mi13:40:043:10:228:456:31
8:43
#17657
23M
23.00 mi13:50:533:21:118:4510:49
8:38
#17447
24M
24.00 mi13:59:303:29:488:458:37
8:37
#17355
40K
24.85 mi14:07:003:37:188:457:30
8:46
#17243
25.2M
25.20 mi14:10:193:40:378:453:19
9:37
#17229
Finish
26.22 mi14:18:593:49:178:458:40
8:30
#17179
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi19351119181191817783(Top 67%)11380(Top 75%)11380(Top 555%)
10K6.21 mi3.10 mi17889+146211409+50911409+50916340(Top 61%)10845(Top 71%)10845(Top 529%)
15K9.32 mi3.11 mi17838+5111390+1911390+1917783(Top 67%)11380(Top 75%)11380(Top 555%)
20K12.43 mi3.11 mi17692+14611332+5811332+5817412(Top 65%)11219(Top 74%)11219(Top 547%)
Half13.11 mi0.68 mi17711-1911340-811340-818420(Top 69%)11659(Top 77%)11659(Top 568%)
25K15.53 mi2.42 mi17939-22811415-7511415-7518926(Top 71%)11813(Top 78%)11813(Top 576%)
30K18.64 mi3.11 mi17676+26311292+12311292+12316793(Top 63%)10826(Top 71%)10826(Top 528%)
20M20.00 mi1.36 mi17787-11111315-2311315-2318861(Top 71%)11616(Top 77%)11616(Top 566%)
21M21.00 mi1.00 mi17711+7611272+4311272+4316485(Top 62%)10562(Top 70%)10562(Top 515%)
35K21.75 mi0.75 mi17657+5411236+3611236+3616443(Top 62%)10460(Top 69%)10460(Top 510%)
23M23.00 mi1.25 mi17447+21011137+9911137+9914010(Top 53%)9378(Top 62%)9378(Top 457%)
24M24.00 mi1.00 mi17355+9211094+4311094+4315151(Top 57%)9823(Top 65%)9823(Top 479%)
40K24.85 mi0.85 mi17243+11211027+6711027+6714924(Top 56%)9658(Top 64%)9658(Top 471%)
25.2M25.20 mi0.35 mi17229+1411011+1611011+1615711(Top 59%)9999(Top 66%)9999(Top 487%)
Finish26.22 mi1.02 mi17179+5010989+2210989+2215439(Top 58%)9924(Top 65%)9924(Top 484%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 67%
×21story building
+97ft-345ft

Overall

17783

Males

11380

M50-54

11380

5K→10K

3.1 - 6.2 mi

Top 61%
×5story building
+79ft-138ft

Overall

16340

Males

10845

M50-54

10845

10K→15K

6.2 - 9.3 mi

Top 67%
×3story building
+67ft-78ft

Overall

17783

Males

11380

M50-54

11380

15K→20K

9.3 - 12.4 mi

Top 65%
×5story building
+106ft-86ft

Overall

17412

Males

11219

M50-54

11219

20K→Half

12.4 - 13.1 mi

Top 69%
×2story building
+19ft-37ft

Overall

18420

Males

11659

M50-54

11659

Half→25K

13.1 - 15.5 mi

Top 71%
×4story building
+66ft-88ft

Overall

18926

Males

11813

M50-54

11813

25K→30K

15.5 - 18.6 mi

Top 63%
×9story building
+181ft-148ft

Overall

16793

Males

10826

M50-54

10826

30K→20M

18.6 - 20.0 mi

Top 71%
×5story building
+64ft-50ft

Overall

18861

Males

11616

M50-54

11616

20M→21M

20.0 - 21.0 mi

Top 62%
×8story building
+106ft-24ft

Overall

16485

Males

10562

M50-54

10562

21M→35K

21.0 - 21.8 mi

Top 62%
×7story building
+17ft-86ft

Overall

16443

Males

10460

M50-54

10460

35K→23M

21.8 - 23.0 mi

Top 53%
×5story building
+23ft-63ft

Overall

14010

Males

9378

M50-54

9378

23M→24M

23.0 - 24.0 mi

Top 57%
×6story building
+12ft-82ft

Overall

15151

Males

9823

M50-54

9823

24M→40K

24.0 - 24.9 mi

Top 56%
×1story
+6ft-20ft

Overall

14924

Males

9658

M50-54

9658

40K→25.2M

24.9 - 25.2 mi

Top 59%
×1story
+13ft-16ft

Overall

15711

Males

9999

M50-54

9999

25.2M→Finish

25.2 - 26.2 mi

Top 58%
×2story building
+22ft-21ft

Overall

15439

Males

9924

M50-54

9924

Passing Analysis

Category:
Athletes Passed
3203
Passed By
1031
Net Change
+2172
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19351
5K → 10K151048+1462#19351#17889
10K → 15K219168+51#17889#17838
15K → 20K24195+146#17838#17692
20K → Half2443-19#17692#17711
Half → 25K64292-228#17711#17939
25K → 30K31653+263#17939#17676
30K → 20M59170-111#17676#17787
20M → 21M12044+76#17787#17711
21M → 35K7420+54#17711#17657
35K → 23M22212+210#17657#17447
23M → 24M11018+92#17447#17355
24M → 40K12917+112#17355#17243
40K → 25.2M2713+14#17243#17229
25.2M → Finish8838+50#17229#17179
TOTALS32031031+2172
📊

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