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BOSTON MARATHON 2023

Katie Dennis

Bib: 24990•F

FL

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
9:43/mi
30:11
↑ 97↓ 3451.5%
10K· 6.21 mi
9:45/mi
1:00:29
↑ 79↓ 1380.4%
15K· 9.32 mi
10:13/mi
1:32:12
↑ 67↓ 78
20K· 12.43 mi
10:23/mi
2:04:28
↑ 106↓ 860.1%
Half· 13.11 mi
9:45/mi
2:11:07
↑ 19↓ 370.5%
25K· 15.53 mi
10:10/mi
2:35:47
↑ 66↓ 880.2%
30K· 18.64 mi
10:41/mi
3:08:58
↑ 181↓ 1480.2%
20M
10:02/mi
3:22:36
↑ 64↓ 500.2%
21M
10:45/mi
3:33:21
↑ 106↓ 241.6%
35K· 21.75 mi
9:52/mi
3:40:44
↑ 17↓ 861.7%
23M
9:36/mi
3:52:45
↑ 23↓ 630.6%
24M
10:30/mi
4:03:15
↓ 821.3%
40K· 24.85 mi
9:34/mi
4:11:26
↓ 200.3%
25.2M
10:32/mi
4:15:04
↑ 13↓ 160.2%
Finish· 26.22 mi
9:11/mi
4:24:26
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:11:07
Pace10:00 /mi
2nd Half
Distance13.11 mi
Time2:13:19
Pace10:10 /mi
📊Positive Split: 1.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:45:4730:119:4330:11
9:43
-
10K
6.21 mi12:16:051:00:299:4430:18
9:45
+0:02
15K
9.32 mi12:47:481:32:129:5431:43
10:13
+0:28
20K
12.43 mi13:20:042:04:2810:0132:16
10:23
+0:10
Half
13.11 mi13:26:432:11:0710:006:39
9:45
-0:38
25K
15.53 mi13:51:232:35:4710:0224:40
10:10
+0:25
30K
18.64 mi14:24:343:08:5810:0833:11
10:41
+0:31
20M
20.00 mi14:38:123:22:3610:0813:38
10:02
-0:39
21M
21.00 mi14:48:573:33:2110:1010:45
10:45
+0:43
35K
21.75 mi14:56:203:40:4410:097:23
9:52
-0:53
23M
23.00 mi15:08:213:52:4510:0712:01
9:36
-0:16
24M
24.00 mi15:18:514:03:1510:0810:30
10:30
+0:54
40K
24.85 mi15:27:024:11:2610:078:11
9:34
-0:56
25.2M
25.20 mi15:30:404:15:0410:073:38
10:32
+0:58
Finish
26.22 mi15:40:024:24:2610:069:22
9:11
-1:21

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

9:11 /mi

Average Pace

10:06 /mi

Slowest Pace

10:45 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:57:43

45% of race

Time at Steady Pace

2:26:43

55% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 10:05 /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 mi11:45:4730:119:4330:11
9:43
#22700
10K
6.21 mi12:16:051:00:299:4430:18
9:45
#22993
15K
9.32 mi12:47:481:32:129:5431:43
10:13
#23343
20K
12.43 mi13:20:042:04:2810:0132:16
10:23
#23444
Half
13.11 mi13:26:432:11:0710:006:39
9:45
#23413
25K
15.53 mi13:51:232:35:4710:0224:40
10:10
#23269
30K
18.64 mi14:24:343:08:5810:0833:11
10:41
#23125
20M
20.00 mi14:38:123:22:3610:0813:38
10:02
#22930
21M
21.00 mi14:48:573:33:2110:1010:45
10:45
#22778
35K
21.75 mi14:56:203:40:4410:097:23
9:52
#22725
23M
23.00 mi15:08:213:52:4510:0712:01
9:36
#22517
24M
24.00 mi15:18:514:03:1510:0810:30
10:30
#22501
40K
24.85 mi15:27:024:11:2610:078:11
9:34
#22385
25.2M
25.20 mi15:30:404:15:0410:073:38
10:32
#22344
Finish
26.22 mi15:40:024:24:2610:069:22
9:11
#22260
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi227009234923423899(Top 90%)9839(Top 86%)9839(Top 201%)
10K6.21 mi3.10 mi22993-2939358-1249358-12423167(Top 87%)9422(Top 82%)9422(Top 193%)
15K9.32 mi3.11 mi23343-3509528-1709528-17023899(Top 90%)9839(Top 86%)9839(Top 201%)
20K12.43 mi3.11 mi23444-1019574-469574-4623628(Top 89%)9700(Top 85%)9700(Top 199%)
Half13.11 mi0.68 mi23413+319559+159559+1522765(Top 86%)9220(Top 81%)9220(Top 189%)
25K15.53 mi2.42 mi23269+1449493+669493+6622555(Top 85%)9147(Top 80%)9147(Top 187%)
30K18.64 mi3.11 mi23125+1449448+459448+4522574(Top 85%)9224(Top 81%)9224(Top 189%)
20M20.00 mi1.36 mi22930+1959362+869362+8620579(Top 77%)8179(Top 72%)8179(Top 167%)
21M21.00 mi1.00 mi22778+1529293+699293+6920275(Top 76%)8082(Top 71%)8082(Top 165%)
35K21.75 mi0.75 mi22725+539273+209273+2020946(Top 79%)8470(Top 74%)8470(Top 173%)
23M23.00 mi1.25 mi22517+2089165+1089165+10818750(Top 70%)7273(Top 64%)7273(Top 149%)
24M24.00 mi1.00 mi22501+169159+69159+622048(Top 83%)9124(Top 80%)9124(Top 187%)
40K24.85 mi0.85 mi22385+1169107+529107+5218606(Top 70%)7286(Top 64%)7286(Top 149%)
25.2M25.20 mi0.35 mi22344+419083+249083+2419284(Top 72%)7679(Top 67%)7679(Top 157%)
Finish26.22 mi1.02 mi22260+849043+409043+4018915(Top 71%)7408(Top 65%)7408(Top 152%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 90%
×21story building
+97ft-345ft

Overall

23899

Females

9839

F18-39

9839

5K→10K

3.1 - 6.2 mi

Top 87%
×5story building
+79ft-138ft

Overall

23167

Females

9422

F18-39

9422

10K→15K

6.2 - 9.3 mi

Top 90%
×3story building
+67ft-78ft

Overall

23899

Females

9839

F18-39

9839

15K→20K

9.3 - 12.4 mi

Top 89%
×5story building
+106ft-86ft

Overall

23628

Females

9700

F18-39

9700

20K→Half

12.4 - 13.1 mi

Top 86%
×2story building
+19ft-37ft

Overall

22765

Females

9220

F18-39

9220

Half→25K

13.1 - 15.5 mi

Top 85%
×4story building
+66ft-88ft

Overall

22555

Females

9147

F18-39

9147

25K→30K

15.5 - 18.6 mi

Top 85%
×9story building
+181ft-148ft

Overall

22574

Females

9224

F18-39

9224

30K→20M

18.6 - 20.0 mi

Top 77%
×5story building
+64ft-50ft

Overall

20579

Females

8179

F18-39

8179

20M→21M

20.0 - 21.0 mi

Top 76%
×8story building
+106ft-24ft

Overall

20275

Females

8082

F18-39

8082

21M→35K

21.0 - 21.8 mi

Top 79%
×7story building
+17ft-86ft

Overall

20946

Females

8470

F18-39

8470

35K→23M

21.8 - 23.0 mi

Top 70%
×5story building
+23ft-63ft

Overall

18750

Females

7273

F18-39

7273

23M→24M

23.0 - 24.0 mi

Top 83%
×6story building
+12ft-82ft

Overall

22048

Females

9124

F18-39

9124

24M→40K

24.0 - 24.9 mi

Top 70%
×1story
+6ft-20ft

Overall

18606

Females

7286

F18-39

7286

40K→25.2M

24.9 - 25.2 mi

Top 72%
×1story
+13ft-16ft

Overall

19284

Females

7679

F18-39

7679

25.2M→Finish

25.2 - 26.2 mi

Top 71%
×2story building
+22ft-21ft

Overall

18915

Females

7408

F18-39

7408

Passing Analysis

Category:
Athletes Passed
1570
Passed By
1130
Net Change
+440
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22700
5K → 10K127420-293#22700#22993
10K → 15K47397-350#22993#23343
15K → 20K72173-101#23343#23444
20K → Half4110+31#23444#23413
Half → 25K17531+144#23413#23269
25K → 30K19854+144#23269#23125
30K → 20M1983+195#23125#22930
20M → 21M1553+152#22930#22778
21M → 35K618+53#22778#22725
35K → 23M2102+208#22725#22517
23M → 24M4226+16#22517#22501
24M → 40K1160+116#22501#22385
40K → 25.2M421+41#22385#22344
25.2M → Finish862+84#22344#22260
TOTALS15701130+440
📊

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