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BOSTON MARATHON 2023

Frank Chahulski

Bib: 12025•M

OH

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
7:34/mi
23:29
↑ 97↓ 3451.5%
10K· 6.21 mi
7:40/mi
47:17
↑ 79↓ 1380.4%
15K· 9.32 mi
8:00/mi
1:12:07
↑ 67↓ 78
20K· 12.43 mi
8:25/mi
1:38:17
↑ 106↓ 860.1%
Half· 13.11 mi
8:29/mi
1:44:04
↑ 19↓ 370.5%
25K· 15.53 mi
8:48/mi
2:05:24
↑ 66↓ 880.2%
30K· 18.64 mi
9:36/mi
2:35:14
↑ 181↓ 1480.2%
20M
10:06/mi
2:48:58
↑ 64↓ 500.2%
21M
11:38/mi
3:00:36
↑ 106↓ 241.6%
35K· 21.75 mi
8:53/mi
3:07:15
↑ 17↓ 861.7%
23M
9:21/mi
3:18:58
↑ 23↓ 630.6%
24M
9:06/mi
3:28:04
↓ 821.3%
40K· 24.85 mi
9:23/mi
3:36:05
↓ 200.3%
25.2M
11:13/mi
3:39:57
↑ 13↓ 160.2%
Finish· 26.22 mi
9:05/mi
3:49:12
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:44:04
Pace7:56 /mi
2nd Half
Distance13.11 mi
Time2:05:08
Pace9:33 /mi
📊Positive Split: 20.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:51:2223:297:3423:29
7:34
-
10K
6.21 mi11:15:1047:177:3723:48
7:40
+0:06
15K
9.32 mi11:40:001:12:077:4424:50
8:00
+0:20
20K
12.43 mi12:06:101:38:177:5526:10
8:25
+0:25
Half
13.11 mi12:11:571:44:047:565:47
8:29
+0:04
25K
15.53 mi12:33:172:05:248:0421:20
8:48
+0:19
30K
18.64 mi13:03:072:35:148:2029:50
9:36
+0:48
20M
20.00 mi13:16:512:48:588:2713:44
10:06
+0:30
21M
21.00 mi13:28:293:00:368:3611:38
11:38
+1:32
35K
21.75 mi13:35:083:07:158:376:39
8:53
-2:45
23M
23.00 mi13:46:513:18:588:3911:43
9:21
+0:28
24M
24.00 mi13:55:573:28:048:409:06
9:06
-0:15
40K
24.85 mi14:03:583:36:058:428:01
9:23
+0:17
25.2M
25.20 mi14:07:503:39:578:443:52
11:13
+1:50
Finish
26.22 mi14:17:053:49:128:459:15
9:05
-2:08

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

7:34 /mi

Average Pace

8:45 /mi

Slowest Pace

11:38 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:44:04

45% of race

Time at Steady Pace

1:35:54

42% of race

Time at Slower Pace

29:14

13% of race

Average Pace: 8:44 /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 mi10:51:2223:297:3423:29
7:34
#10143
10K
6.21 mi11:15:1047:177:3723:48
7:40
#10993
15K
9.32 mi11:40:001:12:077:4424:50
8:00
#12124
20K
12.43 mi12:06:101:38:177:5526:10
8:25
#13396
Half
13.11 mi12:11:571:44:047:565:47
8:29
#13622
25K
15.53 mi12:33:172:05:248:0421:20
8:48
#14447
30K
18.64 mi13:03:072:35:148:2029:50
9:36
#15657
20M
20.00 mi13:16:512:48:588:2713:44
10:06
#16205
21M
21.00 mi13:28:293:00:368:3611:38
11:38
#16796
35K
21.75 mi13:35:083:07:158:376:39
8:53
#16817
23M
23.00 mi13:46:513:18:588:3911:43
9:21
#16874
24M
24.00 mi13:55:573:28:048:409:06
9:06
#16922
40K
24.85 mi14:03:583:36:058:428:01
9:23
#16958
25.2M
25.20 mi14:07:503:39:578:443:52
11:13
#17071
Finish
26.22 mi14:17:053:49:128:459:15
9:05
#17157
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi101438207820714331(Top 54%)10036(Top 66%)10036(Top 446%)
10K6.21 mi3.10 mi10993-8508660-4538660-45311882(Top 45%)9071(Top 60%)9071(Top 403%)
15K9.32 mi3.11 mi12124-11319144-4849144-48414331(Top 54%)10036(Top 66%)10036(Top 446%)
20K12.43 mi3.11 mi13396-12729663-5199663-51916374(Top 62%)10781(Top 71%)10781(Top 479%)
Half13.11 mi0.68 mi13622-2269746-839746-8317552(Top 66%)11313(Top 75%)11313(Top 502%)
25K15.53 mi2.42 mi14447-82510057-31110057-31117924(Top 67%)11380(Top 75%)11380(Top 505%)
30K18.64 mi3.11 mi15657-121010479-42210479-42219790(Top 74%)12122(Top 80%)12122(Top 538%)
20M20.00 mi1.36 mi16205-54810664-18510664-18520748(Top 78%)12448(Top 82%)12448(Top 553%)
21M21.00 mi1.00 mi16796-59110910-24610910-24622105(Top 83%)13025(Top 86%)13025(Top 578%)
35K21.75 mi0.75 mi16817-2110911-110911-117364(Top 65%)10863(Top 72%)10863(Top 482%)
23M23.00 mi1.25 mi16874-5710906+510906+517744(Top 67%)11008(Top 73%)11008(Top 489%)
24M24.00 mi1.00 mi16922-4810908-210908-217660(Top 66%)10918(Top 72%)10918(Top 485%)
40K24.85 mi0.85 mi16958-3610901+710901+717834(Top 67%)10956(Top 72%)10956(Top 487%)
25.2M25.20 mi0.35 mi17071-11310948-4710948-4720908(Top 79%)12341(Top 81%)12341(Top 548%)
Finish26.22 mi1.02 mi17157-8610978-3010978-3018343(Top 69%)11236(Top 74%)11236(Top 499%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 54%
×21story building
+97ft-345ft

Overall

14331

Males

10036

M45-49

10036

5K→10K

3.1 - 6.2 mi

Top 45%
×5story building
+79ft-138ft

Overall

11882

Males

9071

M45-49

9071

10K→15K

6.2 - 9.3 mi

Top 54%
×3story building
+67ft-78ft

Overall

14331

Males

10036

M45-49

10036

15K→20K

9.3 - 12.4 mi

Top 62%
×5story building
+106ft-86ft

Overall

16374

Males

10781

M45-49

10781

20K→Half

12.4 - 13.1 mi

Top 66%
×2story building
+19ft-37ft

Overall

17552

Males

11313

M45-49

11313

Half→25K

13.1 - 15.5 mi

Top 67%
×4story building
+66ft-88ft

Overall

17924

Males

11380

M45-49

11380

25K→30K

15.5 - 18.6 mi

Top 74%
×9story building
+181ft-148ft

Overall

19790

Males

12122

M45-49

12122

30K→20M

18.6 - 20.0 mi

Top 78%
×5story building
+64ft-50ft

Overall

20748

Males

12448

M45-49

12448

20M→21M

20.0 - 21.0 mi

Top 83%
×8story building
+106ft-24ft

Overall

22105

Males

13025

M45-49

13025

21M→35K

21.0 - 21.8 mi

Top 65%
×7story building
+17ft-86ft

Overall

17364

Males

10863

M45-49

10863

35K→23M

21.8 - 23.0 mi

Top 67%
×5story building
+23ft-63ft

Overall

17744

Males

11008

M45-49

11008

23M→24M

23.0 - 24.0 mi

Top 66%
×6story building
+12ft-82ft

Overall

17660

Males

10918

M45-49

10918

24M→40K

24.0 - 24.9 mi

Top 67%
×1story
+6ft-20ft

Overall

17834

Males

10956

M45-49

10956

40K→25.2M

24.9 - 25.2 mi

Top 79%
×1story
+13ft-16ft

Overall

20908

Males

12341

M45-49

12341

25.2M→Finish

25.2 - 26.2 mi

Top 69%
×2story building
+22ft-21ft

Overall

18343

Males

11236

M45-49

11236

Passing Analysis

Category:
Athletes Passed
403
Passed By
7417
Net Change
-7014
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10143
5K → 10K65915-850#10143#10993
10K → 15K171148-1131#10993#12124
15K → 20K181290-1272#12124#13396
20K → Half5231-226#13396#13622
Half → 25K27852-825#13622#14447
25K → 30K161226-1210#14447#15657
30K → 20M17565-548#15657#16205
20M → 21M7598-591#16205#16796
21M → 35K3960-21#16796#16817
35K → 23M60117-57#16817#16874
23M → 24M4795-48#16874#16922
24M → 40K4783-36#16922#16958
40K → 25.2M1114-113#16958#17071
25.2M → Finish37123-86#17071#17157
TOTALS4037417-7014
📊

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