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BOSTON MARATHON 2023

William Loomis

Bib: 22467•M

MD

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M65-69)
#0 / 549
Top 20%
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
8:46/mi
27:15
↑ 97↓ 3451.5%
10K· 6.21 mi
8:41/mi
54:13
↑ 79↓ 1380.4%
15K· 9.32 mi
8:38/mi
1:21:01
↑ 67↓ 78
20K· 12.43 mi
8:44/mi
1:48:09
↑ 106↓ 860.1%
Half· 13.11 mi
8:20/mi
1:53:50
↑ 19↓ 370.5%
25K· 15.53 mi
8:35/mi
2:14:39
↑ 66↓ 880.2%
30K· 18.64 mi
8:46/mi
2:41:53
↑ 181↓ 1480.2%
20M
8:44/mi
2:53:45
↑ 64↓ 500.2%
21M
9:07/mi
3:02:52
↑ 106↓ 241.6%
35K· 21.75 mi
8:01/mi
3:08:52
↑ 17↓ 861.7%
23M
8:25/mi
3:19:24
↑ 23↓ 630.6%
24M
8:05/mi
3:27:29
↓ 821.3%
40K· 24.85 mi
8:23/mi
3:34:39
↓ 200.3%
25.2M
9:08/mi
3:37:48
↑ 13↓ 160.2%
Finish· 26.22 mi
8:13/mi
3:46:10
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:53:50
Pace8:41 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:52:20
Pace8:34 /mi
📊Negative Split: 1.3% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:24:0327:158:4627:15
8:46
-
10K
6.21 mi11:51:0154:138:4426:58
8:41
-0:05
15K
9.32 mi12:17:491:21:018:4226:48
8:38
-0:03
20K
12.43 mi12:44:571:48:098:4227:08
8:44
+0:06
Half
13.11 mi12:50:381:53:508:415:41
8:20
-0:24
25K
15.53 mi13:11:272:14:398:4020:49
8:35
+0:15
30K
18.64 mi13:38:412:41:538:4127:14
8:46
+0:11
20M
20.00 mi13:50:332:53:458:4111:52
8:44
-0:02
21M
21.00 mi13:59:403:02:528:429:07
9:07
+0:23
35K
21.75 mi14:05:403:08:528:416:00
8:01
-1:06
23M
23.00 mi14:16:123:19:248:4010:32
8:25
+0:24
24M
24.00 mi14:24:173:27:298:398:05
8:05
-0:20
40K
24.85 mi14:31:273:34:398:387:10
8:23
+0:18
25.2M
25.20 mi14:34:363:37:488:393:09
9:08
+0:45
Finish
26.22 mi14:42:583:46:108:388:22
8:13
-0:55

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

8:01 /mi

Average Pace

8:38 /mi

Slowest Pace

9:08 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:33:54

95% of race

Time at Steady Pace

12:16

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:38 /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 mi11:24:0327:158:4627:15
8:46
#19288
10K
6.21 mi11:51:0154:138:4426:58
8:41
#19278
15K
9.32 mi12:17:491:21:018:4226:48
8:38
#18999
20K
12.43 mi12:44:571:48:098:4227:08
8:44
#18801
Half
13.11 mi12:50:381:53:508:415:41
8:20
#18710
25K
15.53 mi13:11:272:14:398:4020:49
8:35
#18386
30K
18.64 mi13:38:412:41:538:4127:14
8:46
#17879
20M
20.00 mi13:50:332:53:458:4111:52
8:44
#17640
21M
21.00 mi13:59:403:02:528:429:07
9:07
#17433
35K
21.75 mi14:05:403:08:528:416:00
8:01
#17247
23M
23.00 mi14:16:123:19:248:4010:32
8:25
#16985
24M
24.00 mi14:24:173:27:298:398:05
8:05
#16781
40K
24.85 mi14:31:273:34:398:387:10
8:23
#16621
25.2M
25.20 mi14:34:363:37:488:393:09
9:08
#16556
Finish
26.22 mi14:42:583:46:108:388:22
8:13
#16418
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM65-69Seg. OverallSeg. MalesSeg. M65-69
5K3.11 mi3.11 mi19288118861188618583(Top 70%)11708(Top 77%)11708(Top 2133%)
10K6.21 mi3.10 mi19278+1011932-4611932-4619297(Top 72%)12010(Top 79%)12010(Top 2188%)
15K9.32 mi3.11 mi18999+27911843+8911843+8918583(Top 70%)11708(Top 77%)11708(Top 2133%)
20K12.43 mi3.11 mi18801+19811779+6411779+6418310(Top 69%)11608(Top 76%)11608(Top 2114%)
Half13.11 mi0.68 mi18710+9111747+3211747+3216626(Top 62%)10928(Top 72%)10928(Top 1991%)
25K15.53 mi2.42 mi18386+32411608+13911608+13916723(Top 63%)10853(Top 72%)10853(Top 1977%)
30K18.64 mi3.11 mi17879+50711366+24211366+24215855(Top 60%)10418(Top 69%)10418(Top 1898%)
20M20.00 mi1.36 mi17640+23911265+10111265+10115047(Top 57%)10009(Top 66%)10009(Top 1823%)
21M21.00 mi1.00 mi17433+20711160+10511160+10514058(Top 53%)9530(Top 63%)9530(Top 1736%)
35K21.75 mi0.75 mi17247+18611076+8411076+8412271(Top 46%)8689(Top 57%)8689(Top 1583%)
23M23.00 mi1.25 mi16985+26210948+12810948+12812656(Top 48%)8765(Top 58%)8765(Top 1597%)
24M24.00 mi1.00 mi16781+20410847+10110847+10111817(Top 44%)8317(Top 55%)8317(Top 1515%)
40K24.85 mi0.85 mi16621+16010762+8510762+8512582(Top 47%)8590(Top 57%)8590(Top 1565%)
25.2M25.20 mi0.35 mi16556+6510730+3210730+3213256(Top 50%)8897(Top 59%)8897(Top 1621%)
Finish26.22 mi1.02 mi16418+13810663+6710663+6713487(Top 51%)9019(Top 59%)9019(Top 1643%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 70%
×21story building
+97ft-345ft

Overall

18583

Males

11708

M65-69

11708

5K→10K

3.1 - 6.2 mi

Top 72%
×5story building
+79ft-138ft

Overall

19297

Males

12010

M65-69

12010

10K→15K

6.2 - 9.3 mi

Top 70%
×3story building
+67ft-78ft

Overall

18583

Males

11708

M65-69

11708

15K→20K

9.3 - 12.4 mi

Top 69%
×5story building
+106ft-86ft

Overall

18310

Males

11608

M65-69

11608

20K→Half

12.4 - 13.1 mi

Top 62%
×2story building
+19ft-37ft

Overall

16626

Males

10928

M65-69

10928

Half→25K

13.1 - 15.5 mi

Top 63%
×4story building
+66ft-88ft

Overall

16723

Males

10853

M65-69

10853

25K→30K

15.5 - 18.6 mi

Top 60%
×9story building
+181ft-148ft

Overall

15855

Males

10418

M65-69

10418

30K→20M

18.6 - 20.0 mi

Top 57%
×5story building
+64ft-50ft

Overall

15047

Males

10009

M65-69

10009

20M→21M

20.0 - 21.0 mi

Top 53%
×8story building
+106ft-24ft

Overall

14058

Males

9530

M65-69

9530

21M→35K

21.0 - 21.8 mi

Top 46%
×7story building
+17ft-86ft

Overall

12271

Males

8689

M65-69

8689

35K→23M

21.8 - 23.0 mi

Top 48%
×5story building
+23ft-63ft

Overall

12656

Males

8765

M65-69

8765

23M→24M

23.0 - 24.0 mi

Top 44%
×6story building
+12ft-82ft

Overall

11817

Males

8317

M65-69

8317

24M→40K

24.0 - 24.9 mi

Top 47%
×1story
+6ft-20ft

Overall

12582

Males

8590

M65-69

8590

40K→25.2M

24.9 - 25.2 mi

Top 50%
×1story
+13ft-16ft

Overall

13256

Males

8897

M65-69

8897

25.2M→Finish

25.2 - 26.2 mi

Top 51%
×2story building
+22ft-21ft

Overall

13487

Males

9019

M65-69

9019

Passing Analysis

Category:
Athletes Passed
3427
Passed By
557
Net Change
+2870
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19288
5K → 10K345335+10#19288#19278
10K → 15K35071+279#19278#18999
15K → 20K27779+198#18999#18801
20K → Half954+91#18801#18710
Half → 25K3339+324#18710#18386
25K → 30K51912+507#18386#17879
30K → 20M2445+239#17879#17640
20M → 21M21912+207#17640#17433
21M → 35K1860+186#17433#17247
35K → 23M27311+262#17247#16985
23M → 24M2073+204#16985#16781
24M → 40K1644+160#16781#16621
40K → 25.2M683+65#16621#16556
25.2M → Finish1479+138#16556#16418
TOTALS3427557+2870
📊

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