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BOSTON MARATHON 2023

Josee Lafontaine

Bib: 20461•F

QC

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 46%
Masters (Masters Women)
#0 / 6539
Top 35%
Division (F40-44)
#0 / 1878
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
8:15/mi
25:39
↑ 97↓ 3451.5%
10K· 6.21 mi
8:14/mi
51:13
↑ 79↓ 1380.4%
15K· 9.32 mi
8:19/mi
1:17:02
↑ 67↓ 78
20K· 12.43 mi
8:26/mi
1:43:13
↑ 106↓ 860.1%
Half· 13.11 mi
8:24/mi
1:48:57
↑ 19↓ 370.5%
25K· 15.53 mi
8:34/mi
2:09:44
↑ 66↓ 880.2%
30K· 18.64 mi
8:36/mi
2:36:28
↑ 181↓ 1480.2%
20M
8:40/mi
2:48:15
↑ 64↓ 500.2%
21M
9:01/mi
2:57:16
↑ 106↓ 241.6%
35K· 21.75 mi
8:31/mi
3:03:38
↑ 17↓ 861.7%
23M
8:40/mi
3:14:29
↑ 23↓ 630.6%
24M
8:38/mi
3:23:07
↓ 821.3%
40K· 24.85 mi
8:39/mi
3:30:31
↓ 200.3%
25.2M
9:28/mi
3:33:47
↑ 13↓ 160.2%
Finish· 26.22 mi
8:32/mi
3:42:29
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:48:57
Pace8:19 /mi
2nd Half
Distance13.11 mi
Time1:53:32
Pace8:40 /mi
📊Positive Split: 4.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:18:1725:398:1525:39
8:15
-
10K
6.21 mi11:43:5151:138:1525:34
8:14
-0:01
15K
9.32 mi12:09:401:17:028:1625:49
8:19
+0:05
20K
12.43 mi12:35:511:43:138:1826:11
8:26
+0:07
Half
13.11 mi12:41:351:48:578:195:44
8:24
-0:02
25K
15.53 mi13:02:222:09:448:2120:47
8:34
+0:10
30K
18.64 mi13:29:062:36:288:2426:44
8:36
+0:02
20M
20.00 mi13:40:532:48:158:2511:47
8:40
+0:04
21M
21.00 mi13:49:542:57:168:269:01
9:01
+0:21
35K
21.75 mi13:56:163:03:388:276:22
8:31
-0:30
23M
23.00 mi14:07:073:14:298:2710:51
8:40
+0:09
24M
24.00 mi14:15:453:23:078:288:38
8:38
-0:02
40K
24.85 mi14:23:093:30:318:287:24
8:39
+0:01
25.2M
25.20 mi14:26:253:33:478:293:16
9:28
+0:49
Finish
26.22 mi14:35:073:42:298:308:42
8:32
-0:56

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

8:14 /mi

Average Pace

8:30 /mi

Slowest Pace

9:28 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:39:13

99% of race

Time at Steady Pace

3:16

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:29 /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 mi11:18:1725:398:1525:39
8:15
#15866
10K
6.21 mi11:43:5151:138:1525:34
8:14
#16136
15K
9.32 mi12:09:401:17:028:1625:49
8:19
#16274
20K
12.43 mi12:35:511:43:138:1826:11
8:26
#16323
Half
13.11 mi12:41:351:48:578:195:44
8:24
#16374
25K
15.53 mi13:02:222:09:448:2120:47
8:34
#16423
30K
18.64 mi13:29:062:36:288:2426:44
8:36
#16113
20M
20.00 mi13:40:532:48:158:2511:47
8:40
#15985
21M
21.00 mi13:49:542:57:168:269:01
9:01
#15808
35K
21.75 mi13:56:163:03:388:276:22
8:31
#15770
23M
23.00 mi14:07:073:14:298:2710:51
8:40
#15652
24M
24.00 mi14:15:453:23:078:288:38
8:38
#15625
40K
24.85 mi14:23:093:30:318:287:24
8:39
#15586
25.2M
25.20 mi14:26:253:33:478:293:16
9:28
#15582
Finish
26.22 mi14:35:073:42:298:308:42
8:32
#15558
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi158665191519116599(Top 62%)5665(Top 50%)5665(Top 302%)
10K6.21 mi3.10 mi16136-2705357-1665357-16616462(Top 62%)5552(Top 49%)5552(Top 296%)
15K9.32 mi3.11 mi16274-1385455-985455-9816599(Top 62%)5665(Top 50%)5665(Top 302%)
20K12.43 mi3.11 mi16323-495503-485503-4816420(Top 62%)5599(Top 49%)5599(Top 298%)
Half13.11 mi0.68 mi16374-515538-355538-3517163(Top 64%)5979(Top 52%)5979(Top 318%)
25K15.53 mi2.42 mi16423-495593-555593-5516638(Top 62%)5794(Top 51%)5794(Top 309%)
30K18.64 mi3.11 mi16113+3105443+1505443+15014961(Top 56%)4903(Top 43%)4903(Top 261%)
20M20.00 mi1.36 mi15985+1285383+605383+6014707(Top 55%)4834(Top 42%)4834(Top 257%)
21M21.00 mi1.00 mi15808+1775304+795304+7913548(Top 51%)4243(Top 37%)4243(Top 226%)
35K21.75 mi0.75 mi15770+385296+85296+815406(Top 58%)5351(Top 47%)5351(Top 285%)
23M23.00 mi1.25 mi15652+1185258+385258+3814201(Top 53%)4731(Top 41%)4731(Top 252%)
24M24.00 mi1.00 mi15625+275255+35255+315286(Top 57%)5398(Top 47%)5398(Top 287%)
40K24.85 mi0.85 mi15586+395235+205235+2014298(Top 54%)4913(Top 43%)4913(Top 262%)
25.2M25.20 mi0.35 mi15582+45239-45239-415112(Top 57%)5366(Top 47%)5366(Top 286%)
Finish26.22 mi1.02 mi15558+245240-15240-115650(Top 59%)5618(Top 49%)5618(Top 299%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 62%
×21story building
+97ft-345ft

Overall

16599

Females

5665

F40-44

5665

5K→10K

3.1 - 6.2 mi

Top 62%
×5story building
+79ft-138ft

Overall

16462

Females

5552

F40-44

5552

10K→15K

6.2 - 9.3 mi

Top 62%
×3story building
+67ft-78ft

Overall

16599

Females

5665

F40-44

5665

15K→20K

9.3 - 12.4 mi

Top 62%
×5story building
+106ft-86ft

Overall

16420

Females

5599

F40-44

5599

20K→Half

12.4 - 13.1 mi

Top 64%
×2story building
+19ft-37ft

Overall

17163

Females

5979

F40-44

5979

Half→25K

13.1 - 15.5 mi

Top 62%
×4story building
+66ft-88ft

Overall

16638

Females

5794

F40-44

5794

25K→30K

15.5 - 18.6 mi

Top 56%
×9story building
+181ft-148ft

Overall

14961

Females

4903

F40-44

4903

30K→20M

18.6 - 20.0 mi

Top 55%
×5story building
+64ft-50ft

Overall

14707

Females

4834

F40-44

4834

20M→21M

20.0 - 21.0 mi

Top 51%
×8story building
+106ft-24ft

Overall

13548

Females

4243

F40-44

4243

21M→35K

21.0 - 21.8 mi

Top 58%
×7story building
+17ft-86ft

Overall

15406

Females

5351

F40-44

5351

35K→23M

21.8 - 23.0 mi

Top 53%
×5story building
+23ft-63ft

Overall

14201

Females

4731

F40-44

4731

23M→24M

23.0 - 24.0 mi

Top 57%
×6story building
+12ft-82ft

Overall

15286

Females

5398

F40-44

5398

24M→40K

24.0 - 24.9 mi

Top 54%
×1story
+6ft-20ft

Overall

14298

Females

4913

F40-44

4913

40K→25.2M

24.9 - 25.2 mi

Top 57%
×1story
+13ft-16ft

Overall

15112

Females

5366

F40-44

5366

25.2M→Finish

25.2 - 26.2 mi

Top 59%
×2story building
+22ft-21ft

Overall

15650

Females

5618

F40-44

5618

Passing Analysis

Category:
Athletes Passed
1796
Passed By
1488
Net Change
+308
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15866
5K → 10K189459-270#15866#16136
10K → 15K141279-138#16136#16274
15K → 20K152201-49#16274#16323
20K → Half2374-51#16323#16374
Half → 25K121170-49#16374#16423
25K → 30K36353+310#16423#16113
30K → 20M14315+128#16113#15985
20M → 21M19215+177#15985#15808
21M → 35K7234+38#15808#15770
35K → 23M13719+118#15770#15652
23M → 24M7649+27#15652#15625
24M → 40K8142+39#15625#15586
40K → 25.2M3026+4#15586#15582
25.2M → Finish7652+24#15582#15558
TOTALS17961488+308
📊

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