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BOSTON MARATHON 2023

Neelam Kahlon-Pfister

Bib: 11811•F

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 32%
Gender (Female)
#0 / 11423
Top 12%
Masters (Masters Women)
#0 / 6539
Top 4%
Division (F40-44)
#0 / 1878
Top 10%
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
7:38/mi
23:42
↑ 97↓ 3451.5%
10K· 6.21 mi
7:20/mi
46:29
↑ 79↓ 1380.4%
15K· 9.32 mi
7:17/mi
1:09:08
↑ 67↓ 78
20K· 12.43 mi
7:28/mi
1:32:19
↑ 106↓ 860.1%
Half· 13.11 mi
7:33/mi
1:37:28
↑ 19↓ 370.5%
25K· 15.53 mi
7:33/mi
1:55:46
↑ 66↓ 880.2%
30K· 18.64 mi
7:51/mi
2:20:09
↑ 181↓ 1480.2%
20M
7:45/mi
2:30:41
↑ 64↓ 500.2%
21M
8:08/mi
2:38:49
↑ 106↓ 241.6%
35K· 21.75 mi
7:32/mi
2:44:27
↑ 17↓ 861.7%
23M
7:36/mi
2:53:58
↑ 23↓ 630.6%
24M
7:23/mi
3:01:21
↓ 821.3%
40K· 24.85 mi
7:20/mi
3:07:37
↓ 200.3%
25.2M
7:38/mi
3:10:15
↑ 13↓ 160.2%
Finish· 26.22 mi
6:59/mi
3:17:22
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:37:28
Pace7:26 /mi
2nd Half
Distance13.11 mi
Time1:39:54
Pace7:37 /mi
📊Positive Split: 2.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:50:5523:427:3823:42
7:38
-
10K
6.21 mi11:13:4246:297:2922:47
7:20
-0:18
15K
9.32 mi11:36:211:09:087:2522:39
7:17
-0:03
20K
12.43 mi11:59:321:32:197:2623:11
7:28
+0:11
Half
13.11 mi12:04:411:37:287:265:09
7:33
+0:05
25K
15.53 mi12:22:591:55:467:2718:18
7:33
0:00
30K
18.64 mi12:47:222:20:097:3124:23
7:51
+0:18
20M
20.00 mi12:57:542:30:417:3210:32
7:45
-0:06
21M
21.00 mi13:06:022:38:497:348:08
8:08
+0:23
35K
21.75 mi13:11:402:44:277:345:38
7:32
-0:36
23M
23.00 mi13:21:112:53:587:349:31
7:36
+0:04
24M
24.00 mi13:28:343:01:217:337:23
7:23
-0:13
40K
24.85 mi13:34:503:07:377:336:16
7:20
-0:03
25.2M
25.20 mi13:37:283:10:157:332:38
7:38
+0:18
Finish
26.22 mi13:44:353:17:227:327:07
6:59
-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

6:59 /mi

Average Pace

7:32 /mi

Slowest Pace

8:08 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:34:19

78% of race

Time at Steady Pace

43:03

22% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:32 /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 mi10:50:5523:427:3823:42
7:38
#10810
10K
6.21 mi11:13:4246:297:2922:47
7:20
#9843
15K
9.32 mi11:36:211:09:087:2522:39
7:17
#9335
20K
12.43 mi11:59:321:32:197:2623:11
7:28
#9223
Half
13.11 mi12:04:411:37:287:265:09
7:33
#9303
25K
15.53 mi12:22:591:55:467:2718:18
7:33
#9252
30K
18.64 mi12:47:222:20:097:3124:23
7:51
#9300
20M
20.00 mi12:57:542:30:417:3210:32
7:45
#9230
21M
21.00 mi13:06:022:38:497:348:08
8:08
#9122
35K
21.75 mi13:11:402:44:277:345:38
7:32
#9095
23M
23.00 mi13:21:112:53:587:349:31
7:36
#8954
24M
24.00 mi13:28:343:01:217:337:23
7:23
#8825
40K
24.85 mi13:34:503:07:377:336:16
7:20
#8681
25.2M
25.20 mi13:37:283:10:157:332:38
7:38
#8605
Finish
26.22 mi13:44:353:17:227:327:07
6:59
#8416
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi10810222722278491(Top 32%)1247(Top 11%)1247(Top 66%)
10K6.21 mi3.10 mi9843+9671761+4661761+4669115(Top 34%)1458(Top 13%)1458(Top 78%)
15K9.32 mi3.11 mi9335+5081556+2051556+2058491(Top 32%)1247(Top 11%)1247(Top 66%)
20K12.43 mi3.11 mi9223+1121525+311525+319020(Top 34%)1494(Top 13%)1494(Top 80%)
Half13.11 mi0.68 mi9303-801559-341559-3410627(Top 40%)2165(Top 19%)2165(Top 115%)
25K15.53 mi2.42 mi9252+511547+121547+129143(Top 34%)1608(Top 14%)1608(Top 86%)
30K18.64 mi3.11 mi9300-481607-601607-609731(Top 37%)2028(Top 18%)2028(Top 108%)
20M20.00 mi1.36 mi9230+701605+21605+28524(Top 32%)1602(Top 14%)1602(Top 85%)
21M21.00 mi1.00 mi9122+1081583+221583+228218(Top 31%)1614(Top 14%)1614(Top 86%)
35K21.75 mi0.75 mi9095+271584-11584-18760(Top 33%)1793(Top 16%)1793(Top 95%)
23M23.00 mi1.25 mi8954+1411549+351549+357124(Top 27%)1221(Top 11%)1221(Top 65%)
24M24.00 mi1.00 mi8825+1291528+211528+216974(Top 26%)1269(Top 11%)1269(Top 68%)
40K24.85 mi0.85 mi8681+1441483+451483+455682(Top 21%)872(Top 8%)872(Top 46%)
25.2M25.20 mi0.35 mi8605+761458+251458+254657(Top 17%)629(Top 6%)629(Top 33%)
Finish26.22 mi1.02 mi8416+1891410+481410+485144(Top 19%)781(Top 7%)781(Top 42%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 32%
×21story building
+97ft-345ft

Overall

8491

Females

1247

F40-44

1247

5K→10K

3.1 - 6.2 mi

Top 34%
×5story building
+79ft-138ft

Overall

9115

Females

1458

F40-44

1458

10K→15K

6.2 - 9.3 mi

Top 32%
×3story building
+67ft-78ft

Overall

8491

Females

1247

F40-44

1247

15K→20K

9.3 - 12.4 mi

Top 34%
×5story building
+106ft-86ft

Overall

9020

Females

1494

F40-44

1494

20K→Half

12.4 - 13.1 mi

Top 40%
×2story building
+19ft-37ft

Overall

10627

Females

2165

F40-44

2165

Half→25K

13.1 - 15.5 mi

Top 34%
×4story building
+66ft-88ft

Overall

9143

Females

1608

F40-44

1608

25K→30K

15.5 - 18.6 mi

Top 37%
×9story building
+181ft-148ft

Overall

9731

Females

2028

F40-44

2028

30K→20M

18.6 - 20.0 mi

Top 32%
×5story building
+64ft-50ft

Overall

8524

Females

1602

F40-44

1602

20M→21M

20.0 - 21.0 mi

Top 31%
×8story building
+106ft-24ft

Overall

8218

Females

1614

F40-44

1614

21M→35K

21.0 - 21.8 mi

Top 33%
×7story building
+17ft-86ft

Overall

8760

Females

1793

F40-44

1793

35K→23M

21.8 - 23.0 mi

Top 27%
×5story building
+23ft-63ft

Overall

7124

Females

1221

F40-44

1221

23M→24M

23.0 - 24.0 mi

Top 26%
×6story building
+12ft-82ft

Overall

6974

Females

1269

F40-44

1269

24M→40K

24.0 - 24.9 mi

Top 21%
×1story
+6ft-20ft

Overall

5682

Females

872

F40-44

872

40K→25.2M

24.9 - 25.2 mi

Top 17%
×1story
+13ft-16ft

Overall

4657

Females

629

F40-44

629

25.2M→Finish

25.2 - 26.2 mi

Top 19%
×2story building
+22ft-21ft

Overall

5144

Females

781

F40-44

781

Passing Analysis

Category:
Athletes Passed
3034*
Passed By
640
Net Change
+2394
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10810
5K → 10K1002*35+967#10810#9843
10K → 15K52719+508#9843#9335
15K → 20K19583+112#9335#9223
20K → Half989-80#9223#9303
Half → 25K13382+51#9303#9252
25K → 30K153201-48#9252#9300
30K → 20M10838+70#9300#9230
20M → 21M13426+108#9230#9122
21M → 35K6134+27#9122#9095
35K → 23M15312+141#9095#8954
23M → 24M13910+129#8954#8825
24M → 40K1495+144#8825#8681
40K → 25.2M771+76#8681#8605
25.2M → Finish1945+189#8605#8416
TOTALS3034*640+2394

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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