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BOSTON MARATHON 2023

Bartosz Bialas

Bib: 7504•M

0:00
0:00
/ mi
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Division (M18-39)
#0 / 5285
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
27:41
Rank: #20043
Start → 5K
8:55/mi
27:41 split
10K· 6.21 mi
57:52
Rank: #21771 (-1728)
5K → 10K
9:43/mi
30:11 split
15K· 9.32 mi
1:31:03
Rank: #23066 (-1295)
10K → 15K
10:41/mi
33:11 split
20K· 12.43 mi
2:06:33
Rank: #23792 (-726)
15K → 20K
11:26/mi
35:30 split
Half· 13.11 mi
2:15:05
Rank: #24003 (-211)
20K → Half
12:30/mi
8:32 split
25K· 15.53 mi
2:41:38
Rank: #23980 (+23)
Half → 25K
10:57/mi
26:33 split
30K· 18.64 mi
3:18:14
Rank: #24047 (-67)
25K → 30K
11:47/mi
36:36 split
20M
3:34:49
Rank: #24104 (-57)
30K → 20M
12:12/mi
16:35 split
21M
3:48:03
Rank: #24134 (-30)
20M → 21M
13:14/mi
13:14 split
35K· 21.75 mi
3:56:42
Rank: #24143 (-9)
21M → 35K
11:34/mi
8:39 split
23M
4:11:30
Rank: #24126 (+17)
35K → 23M
11:49/mi
14:48 split
24M
4:23:08
Rank: #24130 (-4)
23M → 24M
11:38/mi
11:38 split
40K· 24.85 mi
4:33:20
Rank: #24098 (+32)
24M → 40K
11:56/mi
10:12 split
25.2M
4:38:09
Rank: #24133 (-35)
40K → 25.2M
13:58/mi
4:49 split
Finish· 26.22 mi
4:49:38
Rank: #24149 (-16)
25.2M → Finish
11:16/mi
11:29 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:15:05
Pace10:18 /mi
2nd Half
Distance13.11 mi
Time2:34:33
Pace11:47 /mi
📊Positive Split: 14.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:32:0727:418:5527:41
8:55
-
10K
6.21 mi11:02:1857:529:1930:11
9:43
+0:48
15K
9.32 mi11:35:291:31:039:4633:11
10:41
+0:58
20K
12.43 mi12:10:592:06:3310:1135:30
11:26
+0:45
Half
13.11 mi12:19:312:15:0510:188:32
12:30
+1:04
25K
15.53 mi12:46:042:41:3810:2426:33
10:57
-1:33
30K
18.64 mi13:22:403:18:1410:3836:36
11:47
+0:50
20M
20.00 mi13:39:153:34:4910:4416:35
12:12
+0:25
21M
21.00 mi13:52:293:48:0310:5213:14
13:14
+1:02
35K
21.75 mi14:01:083:56:4210:538:39
11:34
-1:40
23M
23.00 mi14:15:564:11:3010:5614:48
11:49
+0:15
24M
24.00 mi14:27:344:23:0810:5811:38
11:38
-0:11
40K
24.85 mi14:37:464:33:2011:0010:12
11:56
+0:18
25.2M
25.20 mi14:42:354:38:0911:024:49
13:58
+2:02
Finish
26.22 mi14:54:044:49:3811:0311:29
11:16
-2:42

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

8:55 /mi

Average Pace

11:03 /mi

Slowest Pace

13:58 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:57:36

41% of race

Time at Steady Pace

2:25:27

50% of race

Time at Slower Pace

26:35

9% of race

Average Pace: 11:03 /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 mi10:32:0727:418:5527:41
8:55
#20043
10K
6.21 mi11:02:1857:529:1930:11
9:43
#21771
15K
9.32 mi11:35:291:31:039:4633:11
10:41
#23066
20K
12.43 mi12:10:592:06:3310:1135:30
11:26
#23792
Half
13.11 mi12:19:312:15:0510:188:32
12:30
#24003
25K
15.53 mi12:46:042:41:3810:2426:33
10:57
#23980
30K
18.64 mi13:22:403:18:1410:3836:36
11:47
#24047
20M
20.00 mi13:39:153:34:4910:4416:35
12:12
#24104
21M
21.00 mi13:52:293:48:0310:5213:14
13:14
#24134
35K
21.75 mi14:01:083:56:4210:538:39
11:34
#24143
23M
23.00 mi14:15:564:11:3010:5614:48
11:49
#24126
24M
24.00 mi14:27:344:23:0810:5811:38
11:38
#24130
40K
24.85 mi14:37:464:33:2011:0010:12
11:56
#24098
25.2M
25.20 mi14:42:354:38:0911:024:49
13:58
#24133
Finish
26.22 mi14:54:044:49:3811:0311:29
11:16
#24149
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi20043121831218324772(Top 93%)14417(Top 95%)14417(Top 273%)
10K6.21 mi3.10 mi21771-172813023-84013023-84023083(Top 87%)13685(Top 90%)13685(Top 259%)
15K9.32 mi3.11 mi23066-129513658-63513658-63524772(Top 93%)14417(Top 95%)14417(Top 273%)
20K12.43 mi3.11 mi23792-72613997-33913997-33925158(Top 95%)14560(Top 96%)14560(Top 275%)
Half13.11 mi0.68 mi24003-21114083-8614083-8626161(Top 98%)14981(Top 99%)14981(Top 283%)
25K15.53 mi2.42 mi23980+2314071+1214071+1223885(Top 90%)13966(Top 92%)13966(Top 264%)
30K18.64 mi3.11 mi24047-6714080-914080-924235(Top 91%)14070(Top 93%)14070(Top 266%)
20M20.00 mi1.36 mi24104-5714087-714087-724433(Top 92%)14108(Top 93%)14108(Top 267%)
21M21.00 mi1.00 mi24134-3014089-214089-224331(Top 91%)14048(Top 93%)14048(Top 266%)
35K21.75 mi0.75 mi24143-9140891408924184(Top 91%)13943(Top 92%)13943(Top 264%)
23M23.00 mi1.25 mi24126+1714069+2014069+2023748(Top 89%)13747(Top 91%)13747(Top 260%)
24M24.00 mi1.00 mi24130-414067+214067+224049(Top 90%)13843(Top 91%)13843(Top 262%)
40K24.85 mi0.85 mi24098+3214044+2314044+2323801(Top 89%)13695(Top 90%)13695(Top 259%)
25.2M25.20 mi0.35 mi24133-3514056-1214056-1224969(Top 94%)14263(Top 94%)14263(Top 270%)
Finish26.22 mi1.02 mi24149-1614058-214058-224384(Top 92%)14013(Top 92%)14013(Top 265%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 93%
×21story building
+97ft-345ft

Overall

24772

Males

14417

M18-39

14417

5K→10K

3.1 - 6.2 mi

Top 87%
×5story building
+79ft-138ft

Overall

23083

Males

13685

M18-39

13685

10K→15K

6.2 - 9.3 mi

Top 93%
×3story building
+67ft-78ft

Overall

24772

Males

14417

M18-39

14417

15K→20K

9.3 - 12.4 mi

Top 95%
×5story building
+106ft-86ft

Overall

25158

Males

14560

M18-39

14560

20K→Half

12.4 - 13.1 mi

Top 98%
×2story building
+19ft-37ft

Overall

26161

Males

14981

M18-39

14981

Half→25K

13.1 - 15.5 mi

Top 90%
×4story building
+66ft-88ft

Overall

23885

Males

13966

M18-39

13966

25K→30K

15.5 - 18.6 mi

Top 91%
×9story building
+181ft-148ft

Overall

24235

Males

14070

M18-39

14070

30K→20M

18.6 - 20.0 mi

Top 92%
×5story building
+64ft-50ft

Overall

24433

Males

14108

M18-39

14108

20M→21M

20.0 - 21.0 mi

Top 91%
×8story building
+106ft-24ft

Overall

24331

Males

14048

M18-39

14048

21M→35K

21.0 - 21.8 mi

Top 91%
×7story building
+17ft-86ft

Overall

24184

Males

13943

M18-39

13943

35K→23M

21.8 - 23.0 mi

Top 89%
×5story building
+23ft-63ft

Overall

23748

Males

13747

M18-39

13747

23M→24M

23.0 - 24.0 mi

Top 90%
×6story building
+12ft-82ft

Overall

24049

Males

13843

M18-39

13843

24M→40K

24.0 - 24.9 mi

Top 89%
×1story
+6ft-20ft

Overall

23801

Males

13695

M18-39

13695

40K→25.2M

24.9 - 25.2 mi

Top 94%
×1story
+13ft-16ft

Overall

24969

Males

14263

M18-39

14263

25.2M→Finish

25.2 - 26.2 mi

Top 92%
×2story building
+22ft-21ft

Overall

24384

Males

14013

M18-39

14013

Passing Analysis

Category:
Athletes Passed
429
Passed By
4535
Net Change
-4106
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20043
5K → 10K101738-1728#20043#21771
10K → 15K91304-1295#21771#23066
15K → 20K12738-726#23066#23792
20K → Half3214-211#23792#24003
Half → 25K10178+23#24003#23980
25K → 30K85152-67#23980#24047
30K → 20M3390-57#24047#24104
20M → 21M2858-30#24104#24134
21M → 35K1120-9#24134#24143
35K → 23M4427+17#24143#24126
23M → 24M2327-4#24126#24130
24M → 40K4412+32#24130#24098
40K → 25.2M439-35#24098#24133
25.2M → Finish2238-16#24133#24149
TOTALS4294535-4106
📊

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