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BOSTON MARATHON 2023

Josée Demers

Bib: 17726•F

QC

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 43%
Gender (Female)
#0 / 11423
Top 24%
Masters (Masters Women)
#0 / 6539
Top 12%
Division (F40-44)
#0 / 1878
Top 24%
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
7:51/mi
24:23
↑ 97↓ 3451.5%
10K· 6.21 mi
7:46/mi
48:31
↑ 79↓ 1380.4%
15K· 9.32 mi
7:51/mi
1:12:55
↑ 67↓ 78
20K· 12.43 mi
7:53/mi
1:37:24
↑ 106↓ 860.1%
Half· 13.11 mi
7:42/mi
1:42:39
↑ 19↓ 370.5%
25K· 15.53 mi
7:46/mi
2:01:28
↑ 66↓ 880.2%
30K· 18.64 mi
8:04/mi
2:26:31
↑ 181↓ 1480.2%
20M
8:06/mi
2:37:32
↑ 64↓ 500.2%
21M
8:25/mi
2:45:57
↑ 106↓ 241.6%
35K· 21.75 mi
7:46/mi
2:51:46
↑ 17↓ 861.7%
23M
8:00/mi
3:01:47
↑ 23↓ 630.6%
24M
7:46/mi
3:09:33
↓ 821.3%
40K· 24.85 mi
7:56/mi
3:16:20
↓ 200.3%
25.2M
8:39/mi
3:19:19
↑ 13↓ 160.2%
Finish· 26.22 mi
7:44/mi
3:27:12
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:42:39
Pace7:50 /mi
2nd Half
Distance13.11 mi
Time1:44:33
Pace7:59 /mi
📊Positive Split: 1.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:16:5324:237:5124:23
7:51
-
10K
6.21 mi11:41:0148:317:4824:08
7:46
-0:05
15K
9.32 mi12:05:251:12:557:4924:24
7:51
+0:05
20K
12.43 mi12:29:541:37:247:5024:29
7:53
+0:02
Half
13.11 mi12:35:091:42:397:505:15
7:42
-0:11
25K
15.53 mi12:53:582:01:287:4918:49
7:46
+0:04
30K
18.64 mi13:19:012:26:317:5225:03
8:04
+0:18
20M
20.00 mi13:30:022:37:327:5311:01
8:06
+0:02
21M
21.00 mi13:38:272:45:577:548:25
8:25
+0:19
35K
21.75 mi13:44:162:51:467:545:49
7:46
-0:39
23M
23.00 mi13:54:173:01:477:5410:01
8:00
+0:14
24M
24.00 mi14:02:033:09:337:547:46
7:46
-0:14
40K
24.85 mi14:08:503:16:207:546:47
7:56
+0:10
25.2M
25.20 mi14:11:493:19:197:552:59
8:39
+0:43
Finish
26.22 mi14:19:423:27:127:557:53
7:44
-0:55

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

7:42 /mi

Average Pace

7:55 /mi

Slowest Pace

8:39 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:24:13

99% of race

Time at Steady Pace

2:59

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:54 /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 mi11:16:5324:237:5124:23
7:51
#12832
10K
6.21 mi11:41:0148:317:4824:08
7:46
#12780
15K
9.32 mi12:05:251:12:557:4924:24
7:51
#12909
20K
12.43 mi12:29:541:37:247:5024:29
7:53
#12746
Half
13.11 mi12:35:091:42:397:505:15
7:42
#12676
25K
15.53 mi12:53:582:01:287:4918:49
7:46
#12341
30K
18.64 mi13:19:012:26:317:5225:03
8:04
#12121
20M
20.00 mi13:30:022:37:327:5311:01
8:06
#12020
21M
21.00 mi13:38:272:45:577:548:25
8:25
#11885
35K
21.75 mi13:44:162:51:467:545:49
7:46
#11835
23M
23.00 mi13:54:173:01:477:5410:01
8:00
#11675
24M
24.00 mi14:02:033:09:337:547:46
7:46
#11569
40K
24.85 mi14:08:503:16:207:546:47
7:56
#11475
25.2M
25.20 mi14:11:493:19:197:552:59
8:39
#11446
Finish
26.22 mi14:19:423:27:127:557:53
7:44
#11361
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi128323338333813146(Top 49%)3567(Top 31%)3567(Top 190%)
10K6.21 mi3.10 mi12780+523300+383300+3812855(Top 48%)3344(Top 29%)3344(Top 178%)
15K9.32 mi3.11 mi12909-1293403-1033403-10313146(Top 49%)3567(Top 31%)3567(Top 190%)
20K12.43 mi3.11 mi12746+1633329+743329+7412451(Top 47%)3225(Top 28%)3225(Top 172%)
Half13.11 mi0.68 mi12676+703302+273302+2711899(Top 45%)2851(Top 25%)2851(Top 152%)
25K15.53 mi2.42 mi12341+3353139+1633139+16310812(Top 41%)2397(Top 21%)2397(Top 128%)
30K18.64 mi3.11 mi12121+2203042+973042+9711397(Top 43%)2848(Top 25%)2848(Top 152%)
20M20.00 mi1.36 mi12020+1013014+283014+2811090(Top 42%)2779(Top 24%)2779(Top 148%)
21M21.00 mi1.00 mi11885+1352946+682946+689997(Top 38%)2389(Top 21%)2389(Top 127%)
35K21.75 mi0.75 mi11835+502933+132933+1310522(Top 40%)2622(Top 23%)2622(Top 140%)
23M23.00 mi1.25 mi11675+1602863+702863+709770(Top 37%)2397(Top 21%)2397(Top 128%)
24M24.00 mi1.00 mi11569+1062826+372826+379576(Top 36%)2386(Top 21%)2386(Top 127%)
40K24.85 mi0.85 mi11475+942799+272799+279627(Top 36%)2472(Top 22%)2472(Top 132%)
25.2M25.20 mi0.35 mi11446+292797+22797+210509(Top 39%)2935(Top 26%)2935(Top 156%)
Finish26.22 mi1.02 mi11361+852773+242773+2410235(Top 38%)2812(Top 25%)2812(Top 150%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 49%
×21story building
+97ft-345ft

Overall

13146

Females

3567

F40-44

3567

5K→10K

3.1 - 6.2 mi

Top 48%
×5story building
+79ft-138ft

Overall

12855

Females

3344

F40-44

3344

10K→15K

6.2 - 9.3 mi

Top 49%
×3story building
+67ft-78ft

Overall

13146

Females

3567

F40-44

3567

15K→20K

9.3 - 12.4 mi

Top 47%
×5story building
+106ft-86ft

Overall

12451

Females

3225

F40-44

3225

20K→Half

12.4 - 13.1 mi

Top 45%
×2story building
+19ft-37ft

Overall

11899

Females

2851

F40-44

2851

Half→25K

13.1 - 15.5 mi

Top 41%
×4story building
+66ft-88ft

Overall

10812

Females

2397

F40-44

2397

25K→30K

15.5 - 18.6 mi

Top 43%
×9story building
+181ft-148ft

Overall

11397

Females

2848

F40-44

2848

30K→20M

18.6 - 20.0 mi

Top 42%
×5story building
+64ft-50ft

Overall

11090

Females

2779

F40-44

2779

20M→21M

20.0 - 21.0 mi

Top 38%
×8story building
+106ft-24ft

Overall

9997

Females

2389

F40-44

2389

21M→35K

21.0 - 21.8 mi

Top 40%
×7story building
+17ft-86ft

Overall

10522

Females

2622

F40-44

2622

35K→23M

21.8 - 23.0 mi

Top 37%
×5story building
+23ft-63ft

Overall

9770

Females

2397

F40-44

2397

23M→24M

23.0 - 24.0 mi

Top 36%
×6story building
+12ft-82ft

Overall

9576

Females

2386

F40-44

2386

24M→40K

24.0 - 24.9 mi

Top 36%
×1story
+6ft-20ft

Overall

9627

Females

2472

F40-44

2472

40K→25.2M

24.9 - 25.2 mi

Top 39%
×1story
+13ft-16ft

Overall

10509

Females

2935

F40-44

2935

25.2M→Finish

25.2 - 26.2 mi

Top 38%
×2story building
+22ft-21ft

Overall

10235

Females

2812

F40-44

2812

Passing Analysis

Category:
Athletes Passed
2480
Passed By
1009
Net Change
+1471
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12832
5K → 10K331279+52#12832#12780
10K → 15K149278-129#12780#12909
15K → 20K276113+163#12909#12746
20K → Half8010+70#12746#12676
Half → 25K35015+335#12676#12341
25K → 30K31393+220#12341#12121
30K → 20M15150+101#12121#12020
20M → 21M16328+135#12020#11885
21M → 35K7424+50#11885#11835
35K → 23M18424+160#11835#11675
23M → 24M12418+106#11675#11569
24M → 40K11925+94#11569#11475
40K → 25.2M4718+29#11475#11446
25.2M → Finish11934+85#11446#11361
TOTALS24801009+1471
📊

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