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BOSTON MARATHON 2023

Grzegorz Szymanski

Bib: 11805•M

NC

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 35%
Gender (Male)
#0 / 15176
Top 50%
Masters (Masters Men)
#0 / 9891
Top 39%
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
7:26/mi
23:07
↑ 97↓ 3451.5%
10K· 6.21 mi
7:19/mi
45:52
↑ 79↓ 1380.4%
15K· 9.32 mi
7:25/mi
1:08:55
↑ 67↓ 78
20K· 12.43 mi
7:17/mi
1:31:34
↑ 106↓ 860.1%
Half· 13.11 mi
7:17/mi
1:36:32
↑ 19↓ 370.5%
25K· 15.53 mi
7:24/mi
1:54:28
↑ 66↓ 880.2%
30K· 18.64 mi
7:44/mi
2:18:31
↑ 181↓ 1480.2%
20M
7:49/mi
2:29:09
↑ 64↓ 500.2%
21M
8:18/mi
2:37:27
↑ 106↓ 241.6%
35K· 21.75 mi
7:14/mi
2:42:52
↑ 17↓ 861.7%
23M
8:01/mi
2:52:54
↑ 23↓ 630.6%
24M
8:01/mi
3:00:55
↓ 821.3%
40K· 24.85 mi
8:32/mi
3:08:13
↓ 200.3%
25.2M
9:46/mi
3:11:35
↑ 13↓ 160.2%
Finish· 26.22 mi
9:05/mi
3:20:50
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:36:32
Pace7:22 /mi
2nd Half
Distance13.11 mi
Time1:44:18
Pace7:57 /mi
📊Positive Split: 8.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:50:0823:077:2623:07
7:26
-
10K
6.21 mi11:12:5345:527:2322:45
7:19
-0:07
15K
9.32 mi11:35:561:08:557:2423:03
7:25
+0:06
20K
12.43 mi11:58:351:31:347:2222:39
7:17
-0:08
Half
13.11 mi12:03:331:36:327:224:58
7:17
0:00
25K
15.53 mi12:21:291:54:287:2217:56
7:24
+0:07
30K
18.64 mi12:45:322:18:317:2624:03
7:44
+0:20
20M
20.00 mi12:56:102:29:097:2710:38
7:49
+0:05
21M
21.00 mi13:04:282:37:277:308:18
8:18
+0:29
35K
21.75 mi13:09:532:42:527:295:25
7:14
-1:04
23M
23.00 mi13:19:552:52:547:3110:02
8:01
+0:47
24M
24.00 mi13:27:563:00:557:328:01
8:01
0:00
40K
24.85 mi13:35:143:08:137:347:18
8:32
+0:31
25.2M
25.20 mi13:38:363:11:357:363:22
9:46
+1:14
Finish
26.22 mi13:47:513:20:507:409:15
9:05
-0:41

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

7:14 /mi

Average Pace

7:40 /mi

Slowest Pace

9:46 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

55:47

28% of race

Time at Steady Pace

1:56:50

58% of race

Time at Slower Pace

28:13

14% of race

Average Pace: 7:40 /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 mi10:50:0823:077:2623:07
7:26
#9133
10K
6.21 mi11:12:5345:527:2322:45
7:19
#9039
15K
9.32 mi11:35:561:08:557:2423:03
7:25
#9137
20K
12.43 mi11:58:351:31:347:2222:39
7:17
#8751
Half
13.11 mi12:03:331:36:327:224:58
7:17
#8733
25K
15.53 mi12:21:291:54:287:2217:56
7:24
#8582
30K
18.64 mi12:45:322:18:317:2624:03
7:44
#8609
20M
20.00 mi12:56:102:29:097:2710:38
7:49
#8620
21M
21.00 mi13:04:282:37:277:308:18
8:18
#8621
35K
21.75 mi13:09:532:42:527:295:25
7:14
#8547
23M
23.00 mi13:19:552:52:547:3110:02
8:01
#8601
24M
24.00 mi13:27:563:00:557:328:01
8:01
#8704
40K
24.85 mi13:35:143:08:137:347:18
8:32
#8874
25.2M
25.20 mi13:38:363:11:357:363:22
9:46
#8995
Finish
26.22 mi13:47:513:20:507:409:15
9:05
#9411
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi9133767976799500(Top 36%)7869(Top 52%)7869(Top 349%)
10K6.21 mi3.10 mi9039+947593+867593+869023(Top 34%)7594(Top 50%)7594(Top 337%)
15K9.32 mi3.11 mi9137-987649-567649-569500(Top 36%)7869(Top 52%)7869(Top 349%)
20K12.43 mi3.11 mi8751+3867409+2407409+2407705(Top 29%)6698(Top 44%)6698(Top 297%)
Half13.11 mi0.68 mi8733+187391+187391+188439(Top 32%)7178(Top 47%)7178(Top 319%)
25K15.53 mi2.42 mi8582+1517282+1097282+1097993(Top 30%)6804(Top 45%)6804(Top 302%)
30K18.64 mi3.11 mi8609-277259+237259+238934(Top 34%)7244(Top 48%)7244(Top 322%)
20M20.00 mi1.36 mi8620-117249+107249+109049(Top 34%)7224(Top 48%)7224(Top 321%)
21M21.00 mi1.00 mi8621-17231+187231+189217(Top 35%)7189(Top 47%)7189(Top 319%)
35K21.75 mi0.75 mi8547+747171+607171+606787(Top 25%)5773(Top 38%)5773(Top 256%)
23M23.00 mi1.25 mi8601-547182-117182-119815(Top 37%)7383(Top 49%)7383(Top 328%)
24M24.00 mi1.00 mi8704-1037222-407222-4011317(Top 43%)8048(Top 53%)8048(Top 357%)
40K24.85 mi0.85 mi8874-1707293-717293-7113546(Top 51%)9022(Top 59%)9022(Top 401%)
25.2M25.20 mi0.35 mi8995-1217368-757368-7516304(Top 61%)10227(Top 67%)10227(Top 454%)
Finish26.22 mi1.02 mi9411-4167575-2077575-20718328(Top 69%)11221(Top 74%)11221(Top 498%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 36%
×21story building
+97ft-345ft

Overall

9500

Males

7869

M45-49

7869

5K→10K

3.1 - 6.2 mi

Top 34%
×5story building
+79ft-138ft

Overall

9023

Males

7594

M45-49

7594

10K→15K

6.2 - 9.3 mi

Top 36%
×3story building
+67ft-78ft

Overall

9500

Males

7869

M45-49

7869

15K→20K

9.3 - 12.4 mi

Top 29%
×5story building
+106ft-86ft

Overall

7705

Males

6698

M45-49

6698

20K→Half

12.4 - 13.1 mi

Top 32%
×2story building
+19ft-37ft

Overall

8439

Males

7178

M45-49

7178

Half→25K

13.1 - 15.5 mi

Top 30%
×4story building
+66ft-88ft

Overall

7993

Males

6804

M45-49

6804

25K→30K

15.5 - 18.6 mi

Top 34%
×9story building
+181ft-148ft

Overall

8934

Males

7244

M45-49

7244

30K→20M

18.6 - 20.0 mi

Top 34%
×5story building
+64ft-50ft

Overall

9049

Males

7224

M45-49

7224

20M→21M

20.0 - 21.0 mi

Top 35%
×8story building
+106ft-24ft

Overall

9217

Males

7189

M45-49

7189

21M→35K

21.0 - 21.8 mi

Top 25%
×7story building
+17ft-86ft

Overall

6787

Males

5773

M45-49

5773

35K→23M

21.8 - 23.0 mi

Top 37%
×5story building
+23ft-63ft

Overall

9815

Males

7383

M45-49

7383

23M→24M

23.0 - 24.0 mi

Top 43%
×6story building
+12ft-82ft

Overall

11317

Males

8048

M45-49

8048

24M→40K

24.0 - 24.9 mi

Top 51%
×1story
+6ft-20ft

Overall

13546

Males

9022

M45-49

9022

40K→25.2M

24.9 - 25.2 mi

Top 61%
×1story
+13ft-16ft

Overall

16304

Males

10227

M45-49

10227

25.2M→Finish

25.2 - 26.2 mi

Top 69%
×2story building
+22ft-21ft

Overall

18328

Males

11221

M45-49

11221

Passing Analysis

Category:
Athletes Passed
1576
Passed By
1854
Net Change
-278
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9133
5K → 10K323229+94#9133#9039
10K → 15K110208-98#9039#9137
15K → 20K39711+386#9137#8751
20K → Half3012+18#8751#8733
Half → 25K17827+151#8733#8582
25K → 30K167194-27#8582#8609
30K → 20M7687-11#8609#8620
20M → 21M7576-1#8620#8621
21M → 35K8410+74#8621#8547
35K → 23M69123-54#8547#8601
23M → 24M36139-103#8601#8704
24M → 40K21191-170#8704#8874
40K → 25.2M6127-121#8874#8995
25.2M → Finish4420-416#8995#9411
TOTALS15761854-278
📊

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