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BOSTON MARATHON 2023

Will Shaffer

Bib: 893•M

TN

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 1%
Gender (Male)
#0 / 15176
Top 2%
Division (M18-39)
#0 / 5285
Top 4%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Watch your race unfold from start to finish

Start
0:00:00
Race begins
5K· 3.11 mi
18:01
Rank: #382
Start → 5K
18:01 | 5:48/mi
10K· 6.21 mi
35:55
Rank: #386 (-4)
5K → 10K
17:54 | 5:46/mi
15K· 9.32 mi
54:05
Rank: #384 (+2)
10K → 15K
18:10 | 5:51/mi
20K· 12.43 mi
1:12:10
Rank: #370 (+14)
15K → 20K
18:05 | 5:49/mi
Half· 13.11 mi
1:16:05
Rank: #367 (+3)
20K → Half
3:55 | 5:44/mi
25K· 15.53 mi
1:30:13
Rank: #351 (+16)
Half → 25K
14:08 | 5:50/mi
30K· 18.64 mi
1:48:20
Rank: #320 (+31)
25K → 30K
18:07 | 5:50/mi
20M
1:56:10
Rank: #307 (+13)
30K → 20M
7:50 | 5:46/mi
21M
2:02:17
Rank: #289 (+18)
20M → 21M
6:07 | 6:07/mi
35K· 21.75 mi
2:06:44
Rank: #291 (-2)
21M → 35K
4:27 | 5:57/mi
23M
2:14:25
Rank: #289 (+2)
35K → 23M
7:41 | 6:08/mi
24M
2:20:37
Rank: #298 (-9)
23M → 24M
6:12 | 6:12/mi
40K· 24.85 mi
2:26:06
Rank: #303 (-5)
24M → 40K
5:29 | 6:25/mi
25.2M
2:28:20
Rank: #301 (+2)
40K → 25.2M
2:14 | 6:29/mi
Finish· 26.22 mi
2:34:21
Rank: #297 (+4)
25.2M → Finish
6:01 | 5:54/mi

Course Map & Elevation

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:16:05
Pace5:48 /mi
2nd Half
Distance13.11 mi
Time1:18:16
Pace5:58 /mi
📊Positive Split: 2.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:18:1418:015:4818:01
5:48
-
10K
6.21 mi10:36:0835:555:4717:54
5:46
-0:02
15K
9.32 mi10:54:1854:055:4818:10
5:51
+0:05
20K
12.43 mi11:12:231:12:105:4818:05
5:49
-0:02
Half
13.11 mi11:16:181:16:055:483:55
5:44
-0:05
25K
15.53 mi11:30:261:30:135:4814:08
5:50
+0:06
30K
18.64 mi11:48:331:48:205:4918:07
5:50
0:00
20M
20.00 mi11:56:231:56:105:487:50
5:46
-0:04
21M
21.00 mi12:02:302:02:175:496:07
6:07
+0:21
35K
21.75 mi12:06:572:06:445:504:27
5:57
-0:10
23M
23.00 mi12:14:382:14:255:517:41
6:08
+0:11
24M
24.00 mi12:20:502:20:375:526:12
6:12
+0:04
40K
24.85 mi12:26:192:26:065:535:29
6:25
+0:13
25.2M
25.20 mi12:28:332:28:205:532:14
6:29
+0:04
Finish
26.22 mi12:34:342:34:215:536:01
5:54
-0:35

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

5:44 /mi

Average Pace

5:53 /mi

Slowest Pace

6:29 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Bar length shows time spent in each segment. Colors mark your faster to slower segments, relative to your own pace.

Time at Faster Pace

2:26:38

95% of race

Time at Steady Pace

7:43

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 5:53 /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

Enhanced split table showing pace trends through mini sparkline visualizations.

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi10:18:1418:015:4818:01
5:48
#382
10K
6.21 mi10:36:0835:555:4717:54
5:46
#386
15K
9.32 mi10:54:1854:055:4818:10
5:51
#384
20K
12.43 mi11:12:231:12:105:4818:05
5:49
#370
Half
13.11 mi11:16:181:16:055:483:55
5:44
#367
25K
15.53 mi11:30:261:30:135:4814:08
5:50
#351
30K
18.64 mi11:48:331:48:205:4918:07
5:50
#320
20M
20.00 mi11:56:231:56:105:487:50
5:46
#307
21M
21.00 mi12:02:302:02:175:496:07
6:07
#289
35K
21.75 mi12:06:572:06:445:504:27
5:57
#291
23M
23.00 mi12:14:382:14:255:517:41
6:08
#289
24M
24.00 mi12:20:502:20:375:526:12
6:12
#298
40K
24.85 mi12:26:192:26:065:535:29
6:25
#303
25.2M
25.20 mi12:28:332:28:205:532:14
6:29
#301
Finish
26.22 mi12:34:342:34:215:536:01
5:54
#297
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi382347347422(Top 2%)388(Top 3%)388(Top 7%)
10K6.21 mi3.10 mi386-4351-4351-4390(Top 1%)355(Top 2%)355(Top 7%)
15K9.32 mi3.11 mi384+2349+2349+2422(Top 2%)388(Top 3%)388(Top 7%)
20K12.43 mi3.11 mi370+14335+14335+14329(Top 1%)297(Top 2%)297(Top 6%)
Half13.11 mi0.68 mi367+3334+1334+1313(Top 1%)289(Top 2%)289(Top 5%)
25K15.53 mi2.42 mi351+16319+15319+15315(Top 1%)287(Top 2%)287(Top 5%)
30K18.64 mi3.11 mi320+31288+31288+31182(Top 0.7%)159(Top 1%)159(Top 3%)
20M20.00 mi1.36 mi307+13276+12276+12139(Top 0.5%)118(Top 0.8%)118(Top 2%)
21M21.00 mi1.00 mi289+18260+16260+16179(Top 0.7%)158(Top 1%)158(Top 3%)
35K21.75 mi0.75 mi291-2261-1261-1578(Top 2%)540(Top 4%)540(Top 10%)
23M23.00 mi1.25 mi289+2259+2259+2509(Top 2%)478(Top 3%)478(Top 9%)
24M24.00 mi1.00 mi298-9268-9268-91001(Top 4%)947(Top 6%)947(Top 18%)
40K24.85 mi0.85 mi303-5273-5273-51217(Top 5%)1145(Top 8%)1145(Top 22%)
25.2M25.20 mi0.35 mi301+2271+2271+2447(Top 2%)421(Top 3%)421(Top 8%)
Finish26.22 mi1.02 mi297+4269+2269+2522(Top 2%)496(Top 3%)496(Top 9%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 2%
×21stories
+97ft-345ft

Overall

422

Males

388

M18-39

388

5K→10K

3.1 - 6.2 mi

Top 1%
×5stories
+79ft-138ft

Overall

390

Males

355

M18-39

355

10K→15K

6.2 - 9.3 mi

Top 2%
×3stories
+67ft-78ft

Overall

422

Males

388

M18-39

388

15K→20K

9.3 - 12.4 mi

Top 1%
×5stories
+106ft-86ft

Overall

329

Males

297

M18-39

297

20K→Half

12.4 - 13.1 mi

Top 1%
×2stories
+19ft-37ft

Overall

313

Males

289

M18-39

289

Half→25K

13.1 - 15.5 mi

Top 1%
×4stories
+66ft-88ft

Overall

315

Males

287

M18-39

287

25K→30K

15.5 - 18.6 mi

Top 0.7%
×9stories
+181ft-148ft

Overall

182

Males

159

M18-39

159

30K→20M

18.6 - 20.0 mi

Top 0.5%
×5stories
+64ft-50ft

Overall

139

Males

118

M18-39

118

20M→21M

20.0 - 21.0 mi

Top 0.7%
×8stories
+106ft-24ft

Overall

179

Males

158

M18-39

158

21M→35K

21.0 - 21.8 mi

Top 2%
×7stories
+17ft-86ft

Overall

578

Males

540

M18-39

540

35K→23M

21.8 - 23.0 mi

Top 2%
×5stories
+23ft-63ft

Overall

509

Males

478

M18-39

478

23M→24M

23.0 - 24.0 mi

Top 4%
×6stories
+12ft-82ft

Overall

1001

Males

947

M18-39

947

24M→40K

24.0 - 24.9 mi

Top 5%
×1story
+6ft-20ft

Overall

1217

Males

1145

M18-39

1145

40K→25.2M

24.9 - 25.2 mi

Top 2%
×1story
+13ft-16ft

Overall

447

Males

421

M18-39

421

25.2M→Finish

25.2 - 26.2 mi

Top 2%
×2stories
+22ft-21ft

Overall

522

Males

496

M18-39

496

Passing Analysis

Category:
Athletes Passed
165
Passed By
80
Net Change
+85
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#382
5K → 10K1620-4#382#386
10K → 15K119+2#386#384
15K → 20K173+14#384#370
20K → Half52+3#370#367
Half → 25K193+16#367#351
25K → 30K321+31#351#320
30K → 20M141+13#320#307
20M → 21M180+18#307#289
21M → 35K35-2#289#291
35K → 23M75+2#291#289
23M → 24M211-9#289#298
24M → 40K712-5#298#303
40K → 25.2M42+2#303#301
25.2M → Finish106+4#301#297
TOTALS16580+85
📊

Passing Visuals

Category:

📈Position Graph

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🎨Heatmap Timeline

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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