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BOSTON MARATHON 2023

Klaudia Smolarek

Bib: 25765•F

MA

0:00
0:00
/ mi
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Division (F18-39)
#0 / 4884
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
10:57/mi
34:01
↑ 97↓ 3451.5%
10K· 6.21 mi
11:38/mi
1:10:11
↑ 79↓ 1380.4%
15K· 9.32 mi
11:32/mi
1:46:02
↑ 67↓ 78
20K· 12.43 mi
11:54/mi
2:23:01
↑ 106↓ 860.1%
Half· 13.11 mi
10:58/mi
2:30:30
↑ 19↓ 370.5%
25K· 15.53 mi
11:04/mi
2:57:19
↑ 66↓ 880.2%
30K· 18.64 mi
12:13/mi
3:35:15
↑ 181↓ 1480.2%
20M
11:28/mi
3:50:50
↑ 64↓ 500.2%
21M
12:10/mi
4:03:00
↑ 106↓ 241.6%
35K· 21.75 mi
11:38/mi
4:11:42
↑ 17↓ 861.7%
23M
11:32/mi
4:26:09
↑ 23↓ 630.6%
24M
10:53/mi
4:37:02
↓ 821.3%
40K· 24.85 mi
11:59/mi
4:47:17
↓ 200.3%
25.2M
11:10/mi
4:51:08
↑ 13↓ 160.2%
Finish· 26.22 mi
10:16/mi
5:01:36
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time2:30:30
Pace11:29 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time2:31:06
Pace11:32 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:50:1534:0110:5734:01
10:57
-
10K
6.21 mi12:26:251:10:1111:1836:10
11:38
+0:41
15K
9.32 mi13:02:161:46:0211:2335:51
11:32
-0:06
20K
12.43 mi13:39:152:23:0111:3036:59
11:54
+0:22
Half
13.11 mi13:46:442:30:3011:297:29
10:58
-0:56
25K
15.53 mi14:13:332:57:1911:2526:49
11:04
+0:06
30K
18.64 mi14:51:293:35:1511:3337:56
12:13
+1:09
20M
20.00 mi15:07:043:50:5011:3215:35
11:28
-0:45
21M
21.00 mi15:19:144:03:0011:3412:10
12:10
+0:42
35K
21.75 mi15:27:564:11:4211:348:42
11:38
-0:32
23M
23.00 mi15:42:234:26:0911:3414:27
11:32
-0:06
24M
24.00 mi15:53:164:37:0211:3310:53
10:53
-0:39
40K
24.85 mi16:03:314:47:1711:3410:15
11:59
+1:06
25.2M
25.20 mi16:07:224:51:0811:333:51
11:10
-0:49
Finish
26.22 mi16:17:505:01:3611:3110:28
10:16
-0:54

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

10:16 /mi

Average Pace

11:31 /mi

Slowest Pace

12:13 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:33:31

31% of race

Time at Steady Pace

2:37:59

52% of race

Time at Slower Pace

50:06

17% of race

Average Pace: 11:30 /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 mi11:50:1534:0110:5734:01
10:57
#25608
10K
6.21 mi12:26:251:10:1111:1836:10
11:38
#25917
15K
9.32 mi13:02:161:46:0211:2335:51
11:32
#25866
20K
12.43 mi13:39:152:23:0111:3036:59
11:54
#25802
Half
13.11 mi13:46:442:30:3011:297:29
10:58
#25757
25K
15.53 mi14:13:332:57:1911:2526:49
11:04
#25513
30K
18.64 mi14:51:293:35:1511:3337:56
12:13
#25369
20M
20.00 mi15:07:043:50:5011:3215:35
11:28
#25268
21M
21.00 mi15:19:144:03:0011:3412:10
12:10
#25170
35K
21.75 mi15:27:564:11:4211:348:42
11:38
#25149
23M
23.00 mi15:42:234:26:0911:3414:27
11:32
#25073
24M
24.00 mi15:53:164:37:0211:3310:53
10:53
#25018
40K
24.85 mi16:03:314:47:1711:3410:15
11:59
#24984
25.2M
25.20 mi16:07:224:51:0811:333:51
11:10
#24959
Finish
26.22 mi16:17:505:01:3611:3110:28
10:16
#24890
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi25608107931079325742(Top 97%)10888(Top 95%)10888(Top 223%)
10K6.21 mi3.10 mi25917-30910986-19310986-19326066(Top 98%)11081(Top 97%)11081(Top 227%)
15K9.32 mi3.11 mi25866+5110956+3010956+3025742(Top 97%)10888(Top 95%)10888(Top 223%)
20K12.43 mi3.11 mi25802+6410927+2910927+2925589(Top 96%)10819(Top 95%)10819(Top 222%)
Half13.11 mi0.68 mi25757+4510907+2010907+2024911(Top 94%)10452(Top 91%)10452(Top 214%)
25K15.53 mi2.42 mi25513+24410769+13810769+13824079(Top 90%)9996(Top 88%)9996(Top 205%)
30K18.64 mi3.11 mi25369+14410699+7010699+7024721(Top 93%)10409(Top 91%)10409(Top 213%)
20M20.00 mi1.36 mi25268+10110643+5610643+5623488(Top 88%)9783(Top 86%)9783(Top 200%)
21M21.00 mi1.00 mi25170+9810600+4310600+4323009(Top 86%)9562(Top 84%)9562(Top 196%)
35K21.75 mi0.75 mi25149+2110594+610594+624270(Top 91%)10268(Top 90%)10268(Top 210%)
23M23.00 mi1.25 mi25073+7610563+3110563+3123338(Top 88%)9772(Top 86%)9772(Top 200%)
24M24.00 mi1.00 mi25018+5510538+2510538+2522834(Top 86%)9547(Top 84%)9547(Top 195%)
40K24.85 mi0.85 mi24984+3410524+1410524+1423889(Top 90%)10128(Top 89%)10128(Top 207%)
25.2M25.20 mi0.35 mi24959+2510510+1410510+1420891(Top 78%)8543(Top 75%)8543(Top 175%)
Finish26.22 mi1.02 mi24890+6910481+2910481+2922498(Top 85%)9393(Top 82%)9393(Top 192%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 97%
×21story building
+97ft-345ft

Overall

25742

Females

10888

F18-39

10888

5K→10K

3.1 - 6.2 mi

Top 98%
×5story building
+79ft-138ft

Overall

26066

Females

11081

F18-39

11081

10K→15K

6.2 - 9.3 mi

Top 97%
×3story building
+67ft-78ft

Overall

25742

Females

10888

F18-39

10888

15K→20K

9.3 - 12.4 mi

Top 96%
×5story building
+106ft-86ft

Overall

25589

Females

10819

F18-39

10819

20K→Half

12.4 - 13.1 mi

Top 94%
×2story building
+19ft-37ft

Overall

24911

Females

10452

F18-39

10452

Half→25K

13.1 - 15.5 mi

Top 90%
×4story building
+66ft-88ft

Overall

24079

Females

9996

F18-39

9996

25K→30K

15.5 - 18.6 mi

Top 93%
×9story building
+181ft-148ft

Overall

24721

Females

10409

F18-39

10409

30K→20M

18.6 - 20.0 mi

Top 88%
×5story building
+64ft-50ft

Overall

23488

Females

9783

F18-39

9783

20M→21M

20.0 - 21.0 mi

Top 86%
×8story building
+106ft-24ft

Overall

23009

Females

9562

F18-39

9562

21M→35K

21.0 - 21.8 mi

Top 91%
×7story building
+17ft-86ft

Overall

24270

Females

10268

F18-39

10268

35K→23M

21.8 - 23.0 mi

Top 88%
×5story building
+23ft-63ft

Overall

23338

Females

9772

F18-39

9772

23M→24M

23.0 - 24.0 mi

Top 86%
×6story building
+12ft-82ft

Overall

22834

Females

9547

F18-39

9547

24M→40K

24.0 - 24.9 mi

Top 90%
×1story
+6ft-20ft

Overall

23889

Females

10128

F18-39

10128

40K→25.2M

24.9 - 25.2 mi

Top 78%
×1story
+13ft-16ft

Overall

20891

Females

8543

F18-39

8543

25.2M→Finish

25.2 - 26.2 mi

Top 85%
×2story building
+22ft-21ft

Overall

22498

Females

9393

F18-39

9393

Passing Analysis

Category:
Athletes Passed
1205
Passed By
487
Net Change
+718
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#25608
5K → 10K35344-309#25608#25917
10K → 15K10251+51#25917#25866
15K → 20K10036+64#25866#25802
20K → Half483+45#25802#25757
Half → 25K2440+244#25757#25513
25K → 30K15915+144#25513#25369
30K → 20M1032+101#25369#25268
20M → 21M1013+98#25268#25170
21M → 35K309+21#25170#25149
35K → 23M826+76#25149#25073
23M → 24M616+55#25073#25018
24M → 40K4511+34#25018#24984
40K → 25.2M250+25#24984#24959
25.2M → Finish701+69#24959#24890
TOTALS1205487+718
📊

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