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BOSTON MARATHON 2023

Kathleen Louis

Bib: 19415•F

NC

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 49%
Gender (Female)
#0 / 11423
Top 33%
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
8:11/mi
25:25
↑ 97↓ 3451.5%
10K· 6.21 mi
7:53/mi
49:53
↑ 79↓ 1380.4%
15K· 9.32 mi
7:51/mi
1:14:17
↑ 67↓ 78
20K· 12.43 mi
7:55/mi
1:38:53
↑ 106↓ 860.1%
Half· 13.11 mi
7:53/mi
1:44:16
↑ 19↓ 370.5%
25K· 15.53 mi
8:00/mi
2:03:39
↑ 66↓ 880.2%
30K· 18.64 mi
8:15/mi
2:29:16
↑ 181↓ 1480.2%
20M
8:15/mi
2:40:29
↑ 64↓ 500.2%
21M
8:35/mi
2:49:04
↑ 106↓ 241.6%
35K· 21.75 mi
8:21/mi
2:55:19
↑ 17↓ 861.7%
23M
8:25/mi
3:05:51
↑ 23↓ 630.6%
24M
8:22/mi
3:14:13
↓ 821.3%
40K· 24.85 mi
8:33/mi
3:21:32
↓ 200.3%
25.2M
8:59/mi
3:24:38
↑ 13↓ 160.2%
Finish· 26.22 mi
8:20/mi
3:33:08
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:44:16
Pace7:57 /mi
2nd Half
Distance13.11 mi
Time1:48:52
Pace8:18 /mi
📊Positive Split: 4.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:22:2525:258:1125:25
8:11
-
10K
6.21 mi11:46:5349:538:0224:28
7:53
-0:18
15K
9.32 mi12:11:171:14:177:5824:24
7:51
-0:02
20K
12.43 mi12:35:531:38:537:5724:36
7:55
+0:04
Half
13.11 mi12:41:161:44:167:575:23
7:53
-0:02
25K
15.53 mi13:00:392:03:397:5819:23
8:00
+0:07
30K
18.64 mi13:26:162:29:168:0025:37
8:15
+0:15
20M
20.00 mi13:37:292:40:298:0111:13
8:15
0:00
21M
21.00 mi13:46:042:49:048:038:35
8:35
+0:20
35K
21.75 mi13:52:192:55:198:046:15
8:21
-0:14
23M
23.00 mi14:02:513:05:518:0510:32
8:25
+0:04
24M
24.00 mi14:11:133:14:138:068:22
8:22
-0:03
40K
24.85 mi14:18:323:21:328:077:19
8:33
+0:11
25.2M
25.20 mi14:21:383:24:388:073:06
8:59
+0:26
Finish
26.22 mi14:30:083:33:088:088:30
8:20
-0:39

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

7:51 /mi

Average Pace

8:08 /mi

Slowest Pace

8:59 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:30:02

99% of race

Time at Steady Pace

3:06

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:08 /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 mi11:22:2525:258:1125:25
8:11
#15323
10K
6.21 mi11:46:5349:538:0224:28
7:53
#14579
15K
9.32 mi12:11:171:14:177:5824:24
7:51
#14141
20K
12.43 mi12:35:531:38:537:5724:36
7:55
#13753
Half
13.11 mi12:41:161:44:167:575:23
7:53
#13735
25K
15.53 mi13:00:392:03:397:5819:23
8:00
#13548
30K
18.64 mi13:26:162:29:168:0025:37
8:15
#13354
20M
20.00 mi13:37:292:40:298:0111:13
8:15
#13237
21M
21.00 mi13:46:042:49:048:038:35
8:35
#13061
35K
21.75 mi13:52:192:55:198:046:15
8:21
#13107
23M
23.00 mi14:02:513:05:518:0510:32
8:25
#13052
24M
24.00 mi14:11:133:14:138:068:22
8:22
#13064
40K
24.85 mi14:18:323:21:328:077:19
8:33
#13066
25.2M
25.20 mi14:21:383:24:388:073:06
8:59
#13051
Finish
26.22 mi14:30:083:33:088:088:30
8:20
#13092
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi153234843484313157(Top 49%)3578(Top 31%)3578(Top 73%)
10K6.21 mi3.10 mi14579+7444390+4534390+45313783(Top 52%)3913(Top 34%)3913(Top 80%)
15K9.32 mi3.11 mi14141+4384145+2454145+24513157(Top 49%)3578(Top 31%)3578(Top 73%)
20K12.43 mi3.11 mi13753+3883940+2053940+20512782(Top 48%)3431(Top 30%)3431(Top 70%)
Half13.11 mi0.68 mi13735+183924+163924+1613553(Top 51%)3829(Top 34%)3829(Top 78%)
25K15.53 mi2.42 mi13548+1873832+923832+9212713(Top 48%)3478(Top 30%)3478(Top 71%)
30K18.64 mi3.11 mi13354+1943758+743758+7412657(Top 48%)3561(Top 31%)3561(Top 73%)
20M20.00 mi1.36 mi13237+1173700+583700+5812074(Top 45%)3322(Top 29%)3322(Top 68%)
21M21.00 mi1.00 mi13061+1763618+823618+8211006(Top 41%)2879(Top 25%)2879(Top 59%)
35K21.75 mi0.75 mi13107-463656-383656-3814442(Top 54%)4794(Top 42%)4794(Top 98%)
23M23.00 mi1.25 mi13052+553655+13655+112681(Top 48%)3894(Top 34%)3894(Top 80%)
24M24.00 mi1.00 mi13064-123688-333688-3313652(Top 51%)4471(Top 39%)4471(Top 92%)
40K24.85 mi0.85 mi13066-23713-253713-2513712(Top 52%)4579(Top 40%)4579(Top 94%)
25.2M25.20 mi0.35 mi13051+153717-43717-412526(Top 47%)3985(Top 35%)3985(Top 82%)
Finish26.22 mi1.02 mi13092-413753-363753-3614363(Top 54%)4925(Top 43%)4925(Top 101%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 49%
×21story building
+97ft-345ft

Overall

13157

Females

3578

F18-39

3578

5K→10K

3.1 - 6.2 mi

Top 52%
×5story building
+79ft-138ft

Overall

13783

Females

3913

F18-39

3913

10K→15K

6.2 - 9.3 mi

Top 49%
×3story building
+67ft-78ft

Overall

13157

Females

3578

F18-39

3578

15K→20K

9.3 - 12.4 mi

Top 48%
×5story building
+106ft-86ft

Overall

12782

Females

3431

F18-39

3431

20K→Half

12.4 - 13.1 mi

Top 51%
×2story building
+19ft-37ft

Overall

13553

Females

3829

F18-39

3829

Half→25K

13.1 - 15.5 mi

Top 48%
×4story building
+66ft-88ft

Overall

12713

Females

3478

F18-39

3478

25K→30K

15.5 - 18.6 mi

Top 48%
×9story building
+181ft-148ft

Overall

12657

Females

3561

F18-39

3561

30K→20M

18.6 - 20.0 mi

Top 45%
×5story building
+64ft-50ft

Overall

12074

Females

3322

F18-39

3322

20M→21M

20.0 - 21.0 mi

Top 41%
×8story building
+106ft-24ft

Overall

11006

Females

2879

F18-39

2879

21M→35K

21.0 - 21.8 mi

Top 54%
×7story building
+17ft-86ft

Overall

14442

Females

4794

F18-39

4794

35K→23M

21.8 - 23.0 mi

Top 48%
×5story building
+23ft-63ft

Overall

12681

Females

3894

F18-39

3894

23M→24M

23.0 - 24.0 mi

Top 51%
×6story building
+12ft-82ft

Overall

13652

Females

4471

F18-39

4471

24M→40K

24.0 - 24.9 mi

Top 52%
×1story
+6ft-20ft

Overall

13712

Females

4579

F18-39

4579

40K→25.2M

24.9 - 25.2 mi

Top 47%
×1story
+13ft-16ft

Overall

12526

Females

3985

F18-39

3985

25.2M→Finish

25.2 - 26.2 mi

Top 54%
×2story building
+22ft-21ft

Overall

14363

Females

4925

F18-39

4925

Passing Analysis

Category:
Athletes Passed
2992
Passed By
761
Net Change
+2231
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15323
5K → 10K81470+744#15323#14579
10K → 15K48850+438#14579#14141
15K → 20K42032+388#14141#13753
20K → Half3517+18#13753#13735
Half → 25K23548+187#13735#13548
25K → 30K296102+194#13548#13354
30K → 20M14932+117#13354#13237
20M → 21M19519+176#13237#13061
21M → 35K3884-46#13061#13107
35K → 23M11964+55#13107#13052
23M → 24M5971-12#13052#13064
24M → 40K6365-2#13064#13066
40K → 25.2M3217+15#13066#13051
25.2M → Finish4990-41#13051#13092
TOTALS2992761+2231
📊

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