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BOSTON MARATHON 2023

Robert Machlus

Bib: 21751•M

DE

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 41%
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
8:49/mi
27:25
↑ 97↓ 3451.5%
10K· 6.21 mi
8:32/mi
53:56
↑ 79↓ 1380.4%
15K· 9.32 mi
8:38/mi
1:20:45
↑ 67↓ 78
20K· 12.43 mi
8:50/mi
1:48:11
↑ 106↓ 860.1%
Half· 13.11 mi
8:55/mi
1:54:16
↑ 19↓ 370.5%
25K· 15.53 mi
8:59/mi
2:16:02
↑ 66↓ 880.2%
30K· 18.64 mi
9:21/mi
2:45:04
↑ 181↓ 1480.2%
20M
9:32/mi
2:58:01
↑ 64↓ 500.2%
21M
9:53/mi
3:07:54
↑ 106↓ 241.6%
35K· 21.75 mi
9:24/mi
3:14:56
↑ 17↓ 861.7%
23M
9:56/mi
3:27:22
↑ 23↓ 630.6%
24M
9:18/mi
3:36:40
↓ 821.3%
40K· 24.85 mi
9:25/mi
3:44:43
↓ 200.3%
25.2M
10:12/mi
3:48:14
↑ 13↓ 160.2%
Finish· 26.22 mi
9:03/mi
3:57:27
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:54:16
Pace8:43 /mi
2nd Half
Distance13.11 mi
Time2:03:11
Pace9:24 /mi
📊Positive Split: 7.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:20:2227:258:4927:25
8:49
-
10K
6.21 mi11:46:5353:568:4126:31
8:32
-0:17
15K
9.32 mi12:13:421:20:458:4026:49
8:38
+0:06
20K
12.43 mi12:41:081:48:118:4227:26
8:50
+0:12
Half
13.11 mi12:47:131:54:168:436:05
8:55
+0:05
25K
15.53 mi13:08:592:16:028:4521:46
8:59
+0:04
30K
18.64 mi13:38:012:45:048:5129:02
9:21
+0:22
20M
20.00 mi13:50:582:58:018:5412:57
9:32
+0:11
21M
21.00 mi14:00:513:07:548:579:53
9:53
+0:21
35K
21.75 mi14:07:533:14:568:587:02
9:24
-0:29
23M
23.00 mi14:20:193:27:229:0112:26
9:56
+0:32
24M
24.00 mi14:29:373:36:409:029:18
9:18
-0:38
40K
24.85 mi14:37:403:44:439:028:03
9:25
+0:07
25.2M
25.20 mi14:41:113:48:149:033:31
10:12
+0:47
Finish
26.22 mi14:50:243:57:279:049:13
9:03
-1:09

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

8:32 /mi

Average Pace

9:04 /mi

Slowest Pace

10:12 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:03:35

77% of race

Time at Steady Pace

50:21

21% of race

Time at Slower Pace

3:31

1% of race

Average Pace: 9:03 /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 mi11:20:2227:258:4927:25
8:49
#19589
10K
6.21 mi11:46:5353:568:4126:31
8:32
#18992
15K
9.32 mi12:13:421:20:458:4026:49
8:38
#18827
20K
12.43 mi12:41:081:48:118:4227:26
8:50
#18821
Half
13.11 mi12:47:131:54:168:436:05
8:55
#18885
25K
15.53 mi13:08:592:16:028:4521:46
8:59
#18879
30K
18.64 mi13:38:012:45:048:5129:02
9:21
#18858
20M
20.00 mi13:50:582:58:018:5412:57
9:32
#18872
21M
21.00 mi14:00:513:07:548:579:53
9:53
#18791
35K
21.75 mi14:07:533:14:568:587:02
9:24
#18827
23M
23.00 mi14:20:193:27:229:0112:26
9:56
#18912
24M
24.00 mi14:29:373:36:409:029:18
9:18
#18889
40K
24.85 mi14:37:403:44:439:028:03
9:25
#18856
25.2M
25.20 mi14:41:113:48:149:033:31
10:12
#18846
Finish
26.22 mi14:50:243:57:279:049:13
9:03
#18852
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM65-69Seg. OverallSeg. MalesSeg. M65-69
5K3.11 mi3.11 mi19589119981199818624(Top 70%)11733(Top 77%)11733(Top 2137%)
10K6.21 mi3.10 mi18992+59711827+17111827+17118453(Top 69%)11694(Top 77%)11694(Top 2130%)
15K9.32 mi3.11 mi18827+16511785+4211785+4218624(Top 70%)11733(Top 77%)11733(Top 2137%)
20K12.43 mi3.11 mi18821+611788-311788-318824(Top 71%)11824(Top 78%)11824(Top 2154%)
Half13.11 mi0.68 mi18885-6411813-2511813-2520020(Top 75%)12314(Top 81%)12314(Top 2243%)
25K15.53 mi2.42 mi18879+611808+511808+518841(Top 71%)11780(Top 78%)11780(Top 2146%)
30K18.64 mi3.11 mi18858+2111781+2711781+2718793(Top 71%)11691(Top 77%)11691(Top 2130%)
20M20.00 mi1.36 mi18872-1411767+1411767+1418957(Top 71%)11659(Top 77%)11659(Top 2124%)
21M21.00 mi1.00 mi18791+8111721+4611721+4617567(Top 66%)11041(Top 73%)11041(Top 2011%)
35K21.75 mi0.75 mi18827-3611733-1211733-1219522(Top 73%)11828(Top 78%)11828(Top 2154%)
23M23.00 mi1.25 mi18912-8511755-2211755-2219764(Top 74%)11912(Top 78%)11912(Top 2170%)
24M24.00 mi1.00 mi18889+2311734+2111734+2118446(Top 69%)11292(Top 74%)11292(Top 2057%)
40K24.85 mi0.85 mi18856+3311713+2111713+2118011(Top 68%)11039(Top 73%)11039(Top 2011%)
25.2M25.20 mi0.35 mi18846+1011700+1311700+1318088(Top 68%)11071(Top 73%)11071(Top 2017%)
Finish26.22 mi1.02 mi18852-611706-611706-618172(Top 68%)11163(Top 74%)11163(Top 2033%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 70%
×21story building
+97ft-345ft

Overall

18624

Males

11733

M65-69

11733

5K→10K

3.1 - 6.2 mi

Top 69%
×5story building
+79ft-138ft

Overall

18453

Males

11694

M65-69

11694

10K→15K

6.2 - 9.3 mi

Top 70%
×3story building
+67ft-78ft

Overall

18624

Males

11733

M65-69

11733

15K→20K

9.3 - 12.4 mi

Top 71%
×5story building
+106ft-86ft

Overall

18824

Males

11824

M65-69

11824

20K→Half

12.4 - 13.1 mi

Top 75%
×2story building
+19ft-37ft

Overall

20020

Males

12314

M65-69

12314

Half→25K

13.1 - 15.5 mi

Top 71%
×4story building
+66ft-88ft

Overall

18841

Males

11780

M65-69

11780

25K→30K

15.5 - 18.6 mi

Top 71%
×9story building
+181ft-148ft

Overall

18793

Males

11691

M65-69

11691

30K→20M

18.6 - 20.0 mi

Top 71%
×5story building
+64ft-50ft

Overall

18957

Males

11659

M65-69

11659

20M→21M

20.0 - 21.0 mi

Top 66%
×8story building
+106ft-24ft

Overall

17567

Males

11041

M65-69

11041

21M→35K

21.0 - 21.8 mi

Top 73%
×7story building
+17ft-86ft

Overall

19522

Males

11828

M65-69

11828

35K→23M

21.8 - 23.0 mi

Top 74%
×5story building
+23ft-63ft

Overall

19764

Males

11912

M65-69

11912

23M→24M

23.0 - 24.0 mi

Top 69%
×6story building
+12ft-82ft

Overall

18446

Males

11292

M65-69

11292

24M→40K

24.0 - 24.9 mi

Top 68%
×1story
+6ft-20ft

Overall

18011

Males

11039

M65-69

11039

40K→25.2M

24.9 - 25.2 mi

Top 68%
×1story
+13ft-16ft

Overall

18088

Males

11071

M65-69

11071

25.2M→Finish

25.2 - 26.2 mi

Top 68%
×2story building
+22ft-21ft

Overall

18172

Males

11163

M65-69

11163

Passing Analysis

Category:
Athletes Passed
1985
Passed By
1248
Net Change
+737
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19589
5K → 10K739142+597#19589#18992
10K → 15K277112+165#18992#18827
15K → 20K166160+6#18827#18821
20K → Half973-64#18821#18885
Half → 25K124118+6#18885#18879
25K → 30K175154+21#18879#18858
30K → 20M8195-14#18858#18872
20M → 21M12140+81#18872#18791
21M → 35K3773-36#18791#18827
35K → 23M51136-85#18827#18912
23M → 24M6542+23#18912#18889
24M → 40K6835+33#18889#18856
40K → 25.2M3222+10#18856#18846
25.2M → Finish4046-6#18846#18852
TOTALS19851248+737
📊

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