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BOSTON MARATHON 2023

Robert Mills

Bib: 12492•M

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
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
7:53/mi
24:30
↑ 97↓ 3451.5%
10K· 6.21 mi
7:41/mi
48:22
↑ 79↓ 1380.4%
15K· 9.32 mi
7:48/mi
1:12:37
↑ 67↓ 78
20K· 12.43 mi
8:04/mi
1:37:41
↑ 106↓ 860.1%
Half· 13.11 mi
8:15/mi
1:43:19
↑ 19↓ 370.5%
25K· 15.53 mi
8:22/mi
2:03:35
↑ 66↓ 880.2%
30K· 18.64 mi
8:55/mi
2:31:16
↑ 181↓ 1480.2%
20M
9:06/mi
2:43:38
↑ 64↓ 500.2%
21M
10:01/mi
2:53:39
↑ 106↓ 241.6%
35K· 21.75 mi
9:27/mi
3:00:43
↑ 17↓ 861.7%
23M
9:41/mi
3:12:51
↑ 23↓ 630.6%
24M
10:18/mi
3:23:09
↓ 821.3%
40K· 24.85 mi
9:51/mi
3:31:34
↓ 200.3%
25.2M
11:30/mi
3:35:32
↑ 13↓ 160.2%
Finish· 26.22 mi
10:00/mi
3:45:43
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:43:19
Pace7:53 /mi
2nd Half
Distance13.11 mi
Time2:02:24
Pace9:20 /mi
📊Positive Split: 18.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:15:0324:307:5324:30
7:53
-
10K
6.21 mi11:38:5548:227:4723:52
7:41
-0:12
15K
9.32 mi12:03:101:12:377:4724:15
7:48
+0:07
20K
12.43 mi12:28:141:37:417:5225:04
8:04
+0:16
Half
13.11 mi12:33:521:43:197:535:38
8:15
+0:11
25K
15.53 mi12:54:082:03:357:5720:16
8:22
+0:07
30K
18.64 mi13:21:492:31:168:0727:41
8:55
+0:33
20M
20.00 mi13:34:112:43:388:1112:22
9:06
+0:11
21M
21.00 mi13:44:122:53:398:1610:01
10:01
+0:55
35K
21.75 mi13:51:163:00:438:197:04
9:27
-0:34
23M
23.00 mi14:03:243:12:518:2312:08
9:41
+0:14
24M
24.00 mi14:13:423:23:098:2810:18
10:18
+0:37
40K
24.85 mi14:22:073:31:348:318:25
9:51
-0:27
25.2M
25.20 mi14:26:053:35:328:333:58
11:30
+1:39
Finish
26.22 mi14:36:163:45:438:3710:11
10:00
-1:30

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

7:41 /mi

Average Pace

8:37 /mi

Slowest Pace

11:30 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:03:35

55% of race

Time at Steady Pace

47:07

21% of race

Time at Slower Pace

55:01

24% of race

Average Pace: 8:37 /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 mi11:15:0324:307:5324:30
7:53
#13121
10K
6.21 mi11:38:5548:227:4723:52
7:41
#12548
15K
9.32 mi12:03:101:12:377:4724:15
7:48
#12593
20K
12.43 mi12:28:141:37:417:5225:04
8:04
#12955
Half
13.11 mi12:33:521:43:197:535:38
8:15
#13140
25K
15.53 mi12:54:082:03:357:5720:16
8:22
#13510
30K
18.64 mi13:21:492:31:168:0727:41
8:55
#14209
20M
20.00 mi13:34:112:43:388:1112:22
9:06
#14427
21M
21.00 mi13:44:122:53:398:1610:01
10:01
#14684
35K
21.75 mi13:51:163:00:438:197:04
9:27
#14914
23M
23.00 mi14:03:243:12:518:2312:08
9:41
#15194
24M
24.00 mi14:13:423:23:098:2810:18
10:18
#15635
40K
24.85 mi14:22:073:31:348:318:25
9:51
#15850
25.2M
25.20 mi14:26:053:35:328:333:58
11:30
#15998
Finish
26.22 mi14:36:163:45:438:3710:11
10:00
#16309
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi131219595959512768(Top 48%)9425(Top 62%)9425(Top 419%)
10K6.21 mi3.10 mi12548+5739349+2469349+24612065(Top 45%)9144(Top 60%)9144(Top 406%)
15K9.32 mi3.11 mi12593-459351-29351-212768(Top 48%)9425(Top 62%)9425(Top 419%)
20K12.43 mi3.11 mi12955-3629482-1319482-13113987(Top 53%)9875(Top 65%)9875(Top 438%)
Half13.11 mi0.68 mi13140-1859560-789560-7816163(Top 61%)10748(Top 71%)10748(Top 477%)
25K15.53 mi2.42 mi13510-3709679-1199679-11915311(Top 58%)10267(Top 68%)10267(Top 456%)
30K18.64 mi3.11 mi14209-6999925-2469925-24616694(Top 63%)10788(Top 71%)10788(Top 479%)
20M20.00 mi1.36 mi14427-2189974-499974-4917037(Top 64%)10833(Top 71%)10833(Top 481%)
21M21.00 mi1.00 mi14684-25710066-9210066-9218076(Top 68%)11247(Top 74%)11247(Top 499%)
35K21.75 mi0.75 mi14914-23010137-7110137-7119671(Top 74%)11901(Top 78%)11901(Top 528%)
23M23.00 mi1.25 mi15194-28010216-7910216-7919029(Top 71%)11579(Top 76%)11579(Top 514%)
24M24.00 mi1.00 mi15635-44110355-13910355-13921547(Top 81%)12651(Top 83%)12651(Top 562%)
40K24.85 mi0.85 mi15850-21510440-8510440-8519503(Top 73%)11703(Top 77%)11703(Top 520%)
25.2M25.20 mi0.35 mi15998-14810499-5910499-5921528(Top 81%)12619(Top 83%)12619(Top 560%)
Finish26.22 mi1.02 mi16309-31110623-12410623-12421722(Top 82%)12728(Top 84%)12728(Top 565%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 48%
×21story building
+97ft-345ft

Overall

12768

Males

9425

M45-49

9425

5K→10K

3.1 - 6.2 mi

Top 45%
×5story building
+79ft-138ft

Overall

12065

Males

9144

M45-49

9144

10K→15K

6.2 - 9.3 mi

Top 48%
×3story building
+67ft-78ft

Overall

12768

Males

9425

M45-49

9425

15K→20K

9.3 - 12.4 mi

Top 53%
×5story building
+106ft-86ft

Overall

13987

Males

9875

M45-49

9875

20K→Half

12.4 - 13.1 mi

Top 61%
×2story building
+19ft-37ft

Overall

16163

Males

10748

M45-49

10748

Half→25K

13.1 - 15.5 mi

Top 58%
×4story building
+66ft-88ft

Overall

15311

Males

10267

M45-49

10267

25K→30K

15.5 - 18.6 mi

Top 63%
×9story building
+181ft-148ft

Overall

16694

Males

10788

M45-49

10788

30K→20M

18.6 - 20.0 mi

Top 64%
×5story building
+64ft-50ft

Overall

17037

Males

10833

M45-49

10833

20M→21M

20.0 - 21.0 mi

Top 68%
×8story building
+106ft-24ft

Overall

18076

Males

11247

M45-49

11247

21M→35K

21.0 - 21.8 mi

Top 74%
×7story building
+17ft-86ft

Overall

19671

Males

11901

M45-49

11901

35K→23M

21.8 - 23.0 mi

Top 71%
×5story building
+23ft-63ft

Overall

19029

Males

11579

M45-49

11579

23M→24M

23.0 - 24.0 mi

Top 81%
×6story building
+12ft-82ft

Overall

21547

Males

12651

M45-49

12651

24M→40K

24.0 - 24.9 mi

Top 73%
×1story
+6ft-20ft

Overall

19503

Males

11703

M45-49

11703

40K→25.2M

24.9 - 25.2 mi

Top 81%
×1story
+13ft-16ft

Overall

21528

Males

12619

M45-49

12619

25.2M→Finish

25.2 - 26.2 mi

Top 82%
×2story building
+22ft-21ft

Overall

21722

Males

12728

M45-49

12728

Passing Analysis

Category:
Athletes Passed
1249
Passed By
4437
Net Change
-3188
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13121
5K → 10K697124+573#13121#12548
10K → 15K177222-45#12548#12593
15K → 20K91453-362#12593#12955
20K → Half4189-185#12955#13140
Half → 25K64434-370#13140#13510
25K → 30K55754-699#13510#14209
30K → 20M38256-218#14209#14427
20M → 21M24281-257#14427#14684
21M → 35K12242-230#14684#14914
35K → 23M26306-280#14914#15194
23M → 24M18459-441#15194#15635
24M → 40K21236-215#15635#15850
40K → 25.2M8156-148#15850#15998
25.2M → Finish14325-311#15998#16309
TOTALS12494437-3188
📊

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