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BOSTON MARATHON 2023

Andrzej Danielewicz

Bib: 9603•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M40-44)
#0 / 2241
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
7:36/mi
23:38
↑ 97↓ 3451.5%
10K· 6.21 mi
7:47/mi
47:49
↑ 79↓ 1380.4%
15K· 9.32 mi
8:02/mi
1:12:45
↑ 67↓ 78
20K· 12.43 mi
8:22/mi
1:38:45
↑ 106↓ 860.1%
Half· 13.11 mi
8:26/mi
1:44:30
↑ 19↓ 370.5%
25K· 15.53 mi
9:30/mi
2:07:33
↑ 66↓ 880.2%
30K· 18.64 mi
10:41/mi
2:40:45
↑ 181↓ 1480.2%
20M
10:53/mi
2:55:32
↑ 64↓ 500.2%
21M
12:51/mi
3:08:23
↑ 106↓ 241.6%
35K· 21.75 mi
10:32/mi
3:16:16
↑ 17↓ 861.7%
23M
10:12/mi
3:29:02
↑ 23↓ 630.6%
24M
10:09/mi
3:39:11
↓ 821.3%
40K· 24.85 mi
10:07/mi
3:47:50
↓ 200.3%
25.2M
10:35/mi
3:51:29
↑ 13↓ 160.2%
Finish· 26.22 mi
9:25/mi
4:01:05
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:44:30
Pace7:58 /mi
2nd Half
Distance13.11 mi
Time2:16:35
Pace10:25 /mi
📊Positive Split: 30.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:49:2523:387:3623:38
7:36
-
10K
6.21 mi11:13:3647:497:4224:11
7:47
+0:11
15K
9.32 mi11:38:321:12:457:4824:56
8:02
+0:15
20K
12.43 mi12:04:321:38:457:5726:00
8:22
+0:20
Half
13.11 mi12:10:171:44:307:585:45
8:26
+0:04
25K
15.53 mi12:33:202:07:338:1323:03
9:30
+1:04
30K
18.64 mi13:06:322:40:458:3733:12
10:41
+1:11
20M
20.00 mi13:21:192:55:328:4714:47
10:53
+0:12
21M
21.00 mi13:34:103:08:238:5812:51
12:51
+1:58
35K
21.75 mi13:42:033:16:169:017:53
10:32
-2:19
23M
23.00 mi13:54:493:29:029:0512:46
10:12
-0:20
24M
24.00 mi14:04:583:39:119:0810:09
10:09
-0:03
40K
24.85 mi14:13:373:47:509:108:39
10:07
-0:02
25.2M
25.20 mi14:17:163:51:299:113:39
10:35
+0:28
Finish
26.22 mi14:26:524:01:059:129:36
9:25
-1:10

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

7:36 /mi

Average Pace

9:12 /mi

Slowest Pace

12:51 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:54:06

47% of race

Time at Steady Pace

1:39:21

41% of race

Time at Slower Pace

27:38

11% of race

Average Pace: 9:12 /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 mi10:49:2523:387:3623:38
7:36
#10596
10K
6.21 mi11:13:3647:497:4224:11
7:47
#11756
15K
9.32 mi11:38:321:12:457:4824:56
8:02
#12733
20K
12.43 mi12:04:321:38:457:5726:00
8:22
#13667
Half
13.11 mi12:10:171:44:307:585:45
8:26
#13874
25K
15.53 mi12:33:202:07:338:1323:03
9:30
#15420
30K
18.64 mi13:06:322:40:458:3733:12
10:41
#17502
20M
20.00 mi13:21:192:55:328:4714:47
10:53
#18187
21M
21.00 mi13:34:103:08:238:5812:51
12:51
#18916
35K
21.75 mi13:42:033:16:169:017:53
10:32
#19125
23M
23.00 mi13:54:493:29:029:0512:46
10:12
#19248
24M
24.00 mi14:04:583:39:119:0810:09
10:09
#19380
40K
24.85 mi14:13:373:47:509:108:39
10:07
#19445
25.2M
25.20 mi14:17:163:51:299:113:39
10:35
#19458
Finish
26.22 mi14:26:524:01:059:129:36
9:25
#19485
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi105968454845414585(Top 55%)10137(Top 67%)10137(Top 452%)
10K6.21 mi3.10 mi11756-11609006-5529006-55212986(Top 49%)9553(Top 63%)9553(Top 426%)
15K9.32 mi3.11 mi12733-9779417-4119417-41114585(Top 55%)10137(Top 67%)10137(Top 452%)
20K12.43 mi3.11 mi13667-9349761-3449761-34416044(Top 60%)10653(Top 70%)10653(Top 475%)
Half13.11 mi0.68 mi13874-2079848-879848-8717294(Top 65%)11225(Top 74%)11225(Top 501%)
25K15.53 mi2.42 mi15420-154610425-57710425-57720844(Top 78%)12634(Top 83%)12634(Top 564%)
30K18.64 mi3.11 mi17502-208211225-80011225-80022583(Top 85%)13331(Top 88%)13331(Top 595%)
20M20.00 mi1.36 mi18187-68511474-24911474-24922469(Top 84%)13209(Top 87%)13209(Top 589%)
21M21.00 mi1.00 mi18916-72911778-30411778-30423896(Top 90%)13840(Top 91%)13840(Top 618%)
35K21.75 mi0.75 mi19125-20911860-8211860-8222446(Top 84%)13129(Top 87%)13129(Top 586%)
23M23.00 mi1.25 mi19248-12311905-4511905-4520547(Top 77%)12263(Top 81%)12263(Top 547%)
24M24.00 mi1.00 mi19380-13211956-5111956-5121175(Top 80%)12496(Top 82%)12496(Top 558%)
40K24.85 mi0.85 mi19445-6511965-911965-920271(Top 76%)12046(Top 79%)12046(Top 538%)
25.2M25.20 mi0.35 mi19458-1311967-211967-219331(Top 73%)11622(Top 77%)11622(Top 519%)
Finish26.22 mi1.02 mi19485-2711974-711974-719827(Top 74%)11906(Top 78%)11906(Top 531%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 55%
×21story building
+97ft-345ft

Overall

14585

Males

10137

M40-44

10137

5K→10K

3.1 - 6.2 mi

Top 49%
×5story building
+79ft-138ft

Overall

12986

Males

9553

M40-44

9553

10K→15K

6.2 - 9.3 mi

Top 55%
×3story building
+67ft-78ft

Overall

14585

Males

10137

M40-44

10137

15K→20K

9.3 - 12.4 mi

Top 60%
×5story building
+106ft-86ft

Overall

16044

Males

10653

M40-44

10653

20K→Half

12.4 - 13.1 mi

Top 65%
×2story building
+19ft-37ft

Overall

17294

Males

11225

M40-44

11225

Half→25K

13.1 - 15.5 mi

Top 78%
×4story building
+66ft-88ft

Overall

20844

Males

12634

M40-44

12634

25K→30K

15.5 - 18.6 mi

Top 85%
×9story building
+181ft-148ft

Overall

22583

Males

13331

M40-44

13331

30K→20M

18.6 - 20.0 mi

Top 84%
×5story building
+64ft-50ft

Overall

22469

Males

13209

M40-44

13209

20M→21M

20.0 - 21.0 mi

Top 90%
×8story building
+106ft-24ft

Overall

23896

Males

13840

M40-44

13840

21M→35K

21.0 - 21.8 mi

Top 84%
×7story building
+17ft-86ft

Overall

22446

Males

13129

M40-44

13129

35K→23M

21.8 - 23.0 mi

Top 77%
×5story building
+23ft-63ft

Overall

20547

Males

12263

M40-44

12263

23M→24M

23.0 - 24.0 mi

Top 80%
×6story building
+12ft-82ft

Overall

21175

Males

12496

M40-44

12496

24M→40K

24.0 - 24.9 mi

Top 76%
×1story
+6ft-20ft

Overall

20271

Males

12046

M40-44

12046

40K→25.2M

24.9 - 25.2 mi

Top 73%
×1story
+13ft-16ft

Overall

19331

Males

11622

M40-44

11622

25.2M→Finish

25.2 - 26.2 mi

Top 74%
×2story building
+22ft-21ft

Overall

19827

Males

11906

M40-44

11906

Passing Analysis

Category:
Athletes Passed
322
Passed By
9211
Net Change
-8889
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10596
5K → 10K511211-1160#10596#11756
10K → 15K281005-977#11756#12733
15K → 20K38972-934#12733#13667
20K → Half4211-207#13667#13874
Half → 25K81554-1546#13874#15420
25K → 30K122094-2082#15420#17502
30K → 20M9694-685#17502#18187
20M → 21M4733-729#18187#18916
21M → 35K9218-209#18916#19125
35K → 23M45168-123#19125#19248
23M → 24M27159-132#19248#19380
24M → 40K35100-65#19380#19445
40K → 25.2M1427-13#19445#19458
25.2M → Finish3865-27#19458#19485
TOTALS3229211-8889
📊

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