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BOSTON MARATHON 2023

Jacek Postawa

Bib: 16234•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M55-59)
#0 / 1422
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
8:50/mi
27:27
↑ 97↓ 3451.5%
10K· 6.21 mi
8:57/mi
55:16
↑ 79↓ 1380.4%
15K· 9.32 mi
8:56/mi
1:23:02
↑ 67↓ 78
20K· 12.43 mi
9:29/mi
1:52:31
↑ 106↓ 860.1%
Half· 13.11 mi
9:23/mi
1:58:55
↑ 19↓ 370.5%
25K· 15.53 mi
10:38/mi
2:24:41
↑ 66↓ 880.2%
30K· 18.64 mi
11:33/mi
3:00:34
↑ 181↓ 1480.2%
20M
12:04/mi
3:16:58
↑ 64↓ 500.2%
21M
14:25/mi
3:31:23
↑ 106↓ 241.6%
35K· 21.75 mi
11:07/mi
3:39:42
↑ 17↓ 861.7%
23M
11:20/mi
3:53:54
↑ 23↓ 630.6%
24M
13:08/mi
4:07:02
↓ 821.3%
40K· 24.85 mi
14:37/mi
4:19:32
↓ 200.3%
25.2M
15:08/mi
4:24:45
↑ 13↓ 160.2%
Finish· 26.22 mi
11:39/mi
4:36:37
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:58:55
Pace9:04 /mi
2nd Half
Distance13.11 mi
Time2:37:42
Pace12:02 /mi
📊Positive Split: 32.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:27:5827:278:5027:27
8:50
-
10K
6.21 mi11:55:4755:168:5427:49
8:57
+0:07
15K
9.32 mi12:23:331:23:028:5527:46
8:56
-0:01
20K
12.43 mi12:53:021:52:319:0329:29
9:29
+0:33
Half
13.11 mi12:59:261:58:559:046:24
9:23
-0:06
25K
15.53 mi13:25:122:24:419:1925:46
10:38
+1:15
30K
18.64 mi14:01:053:00:349:4135:53
11:33
+0:55
20M
20.00 mi14:17:293:16:589:5116:24
12:04
+0:31
21M
21.00 mi14:31:543:31:2310:0414:25
14:25
+2:21
35K
21.75 mi14:40:133:39:4210:068:19
11:07
-3:18
23M
23.00 mi14:54:253:53:5410:1014:12
11:20
+0:13
24M
24.00 mi15:07:334:07:0210:1813:08
13:08
+1:48
40K
24.85 mi15:20:034:19:3210:2712:30
14:37
+1:29
25.2M
25.20 mi15:25:164:24:4510:305:13
15:08
+0:31
Finish
26.22 mi15:37:084:36:3710:3311:52
11:39
-3:29

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

8:50 /mi

Average Pace

10:33 /mi

Slowest Pace

15:08 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:58:55

43% of race

Time at Steady Pace

1:52:26

41% of race

Time at Slower Pace

45:16

16% of race

Average Pace: 10:33 /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 mi11:27:5827:278:5027:27
8:50
#19656
10K
6.21 mi11:55:4755:168:5427:49
8:57
#20164
15K
9.32 mi12:23:331:23:028:5527:46
8:56
#20159
20K
12.43 mi12:53:021:52:319:0329:29
9:29
#20596
Half
13.11 mi12:59:261:58:559:046:24
9:23
#20645
25K
15.53 mi13:25:122:24:419:1925:46
10:38
#21321
30K
18.64 mi14:01:053:00:349:4135:53
11:33
#22018
20M
20.00 mi14:17:293:16:589:5116:24
12:04
#22282
21M
21.00 mi14:31:543:31:2310:0414:25
14:25
#22578
35K
21.75 mi14:40:133:39:4210:068:19
11:07
#22613
23M
23.00 mi14:54:253:53:5410:1014:12
11:20
#22634
24M
24.00 mi15:07:334:07:0210:1813:08
13:08
#22830
40K
24.85 mi15:20:034:19:3210:2712:30
14:37
#23079
25.2M
25.20 mi15:25:164:24:4510:305:13
15:08
#23165
Finish
26.22 mi15:37:084:36:3710:3311:52
11:39
#23261
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi19656120271202720204(Top 76%)12404(Top 82%)12404(Top 872%)
10K6.21 mi3.10 mi20164-50812289-26212289-26220699(Top 78%)12590(Top 83%)12590(Top 885%)
15K9.32 mi3.11 mi20159+512316-2712316-2720204(Top 76%)12404(Top 82%)12404(Top 872%)
20K12.43 mi3.11 mi20596-43712524-20812524-20821522(Top 81%)12969(Top 85%)12969(Top 912%)
Half13.11 mi0.68 mi20645-4912555-3112555-3121757(Top 82%)13078(Top 86%)13078(Top 920%)
25K15.53 mi2.42 mi21321-67612860-30512860-30523399(Top 88%)13762(Top 91%)13762(Top 968%)
30K18.64 mi3.11 mi22018-69713153-29313153-29323925(Top 90%)13928(Top 92%)13928(Top 979%)
20M20.00 mi1.36 mi22282-26413260-10713260-10724276(Top 91%)14028(Top 92%)14028(Top 986%)
21M21.00 mi1.00 mi22578-29613373-11313373-11325363(Top 95%)14550(Top 96%)14550(Top 1023%)
35K21.75 mi0.75 mi22613-3513376-313376-323503(Top 88%)13606(Top 90%)13606(Top 957%)
23M23.00 mi1.25 mi22634-2113384-813384-822970(Top 86%)13378(Top 88%)13378(Top 941%)
24M24.00 mi1.00 mi22830-19613455-7113455-7125573(Top 96%)14588(Top 96%)14588(Top 1026%)
40K24.85 mi0.85 mi23079-24913575-12013575-12025996(Top 98%)14803(Top 98%)14803(Top 1041%)
25.2M25.20 mi0.35 mi23165-8613612-3713612-3725763(Top 97%)14681(Top 97%)14681(Top 1032%)
Finish26.22 mi1.02 mi23261-9613653-4113653-4124861(Top 93%)14250(Top 94%)14250(Top 1002%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 76%
×21story building
+97ft-345ft

Overall

20204

Males

12404

M55-59

12404

5K→10K

3.1 - 6.2 mi

Top 78%
×5story building
+79ft-138ft

Overall

20699

Males

12590

M55-59

12590

10K→15K

6.2 - 9.3 mi

Top 76%
×3story building
+67ft-78ft

Overall

20204

Males

12404

M55-59

12404

15K→20K

9.3 - 12.4 mi

Top 81%
×5story building
+106ft-86ft

Overall

21522

Males

12969

M55-59

12969

20K→Half

12.4 - 13.1 mi

Top 82%
×2story building
+19ft-37ft

Overall

21757

Males

13078

M55-59

13078

Half→25K

13.1 - 15.5 mi

Top 88%
×4story building
+66ft-88ft

Overall

23399

Males

13762

M55-59

13762

25K→30K

15.5 - 18.6 mi

Top 90%
×9story building
+181ft-148ft

Overall

23925

Males

13928

M55-59

13928

30K→20M

18.6 - 20.0 mi

Top 91%
×5story building
+64ft-50ft

Overall

24276

Males

14028

M55-59

14028

20M→21M

20.0 - 21.0 mi

Top 95%
×8story building
+106ft-24ft

Overall

25363

Males

14550

M55-59

14550

21M→35K

21.0 - 21.8 mi

Top 88%
×7story building
+17ft-86ft

Overall

23503

Males

13606

M55-59

13606

35K→23M

21.8 - 23.0 mi

Top 86%
×5story building
+23ft-63ft

Overall

22970

Males

13378

M55-59

13378

23M→24M

23.0 - 24.0 mi

Top 96%
×6story building
+12ft-82ft

Overall

25573

Males

14588

M55-59

14588

24M→40K

24.0 - 24.9 mi

Top 98%
×1story
+6ft-20ft

Overall

25996

Males

14803

M55-59

14803

40K→25.2M

24.9 - 25.2 mi

Top 97%
×1story
+13ft-16ft

Overall

25763

Males

14681

M55-59

14681

25.2M→Finish

25.2 - 26.2 mi

Top 93%
×2story building
+22ft-21ft

Overall

24861

Males

14250

M55-59

14250

Passing Analysis

Category:
Athletes Passed
548
Passed By
4153
Net Change
-3605
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19656
5K → 10K122630-508#19656#20164
10K → 15K180175+5#20164#20159
15K → 20K65502-437#20159#20596
20K → Half1463-49#20596#20645
Half → 25K11687-676#20645#21321
25K → 30K26723-697#21321#22018
30K → 20M13277-264#22018#22282
20M → 21M9305-296#22282#22578
21M → 35K2964-35#22578#22613
35K → 23M5778-21#22613#22634
23M → 24M5201-196#22634#22830
24M → 40K5254-249#22830#23079
40K → 25.2M187-86#23079#23165
25.2M → Finish11107-96#23165#23261
TOTALS5484153-3605
📊

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