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BOSTON MARATHON 2023

Lori Duffant

Bib: 24209•F

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F60-64)
#0 / 527
Top 50%
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
9:29/mi
29:28
↑ 97↓ 3451.5%
10K· 6.21 mi
9:20/mi
58:28
↑ 79↓ 1380.4%
15K· 9.32 mi
9:28/mi
1:27:53
↑ 67↓ 78
20K· 12.43 mi
9:36/mi
1:57:41
↑ 106↓ 860.1%
Half· 13.11 mi
9:17/mi
2:04:01
↑ 19↓ 370.5%
25K· 15.53 mi
9:32/mi
2:27:07
↑ 66↓ 880.2%
30K· 18.64 mi
9:39/mi
2:57:07
↑ 181↓ 1480.2%
20M
9:53/mi
3:10:33
↑ 64↓ 500.2%
21M
10:30/mi
3:21:03
↑ 106↓ 241.6%
35K· 21.75 mi
9:24/mi
3:28:05
↑ 17↓ 861.7%
23M
10:02/mi
3:40:39
↑ 23↓ 630.6%
24M
9:52/mi
3:50:31
↓ 821.3%
40K· 24.85 mi
10:13/mi
3:59:15
↓ 200.3%
25.2M
10:52/mi
4:03:00
↑ 13↓ 160.2%
Finish· 26.22 mi
9:34/mi
4:12:45
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:04:01
Pace9:28 /mi
2nd Half
Distance13.11 mi
Time2:08:44
Pace9:49 /mi
📊Positive Split: 3.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:44:5429:289:2929:28
9:29
-
10K
6.21 mi12:13:5458:289:2529:00
9:20
-0:09
15K
9.32 mi12:43:191:27:539:2629:25
9:28
+0:08
20K
12.43 mi13:13:071:57:419:2829:48
9:36
+0:08
Half
13.11 mi13:19:272:04:019:286:20
9:17
-0:19
25K
15.53 mi13:42:332:27:079:2823:06
9:32
+0:15
30K
18.64 mi14:12:332:57:079:3030:00
9:39
+0:07
20M
20.00 mi14:25:593:10:339:3213:26
9:53
+0:14
21M
21.00 mi14:36:293:21:039:3410:30
10:30
+0:37
35K
21.75 mi14:43:313:28:059:347:02
9:24
-1:06
23M
23.00 mi14:56:053:40:399:3612:34
10:02
+0:38
24M
24.00 mi15:05:573:50:319:369:52
9:52
-0:10
40K
24.85 mi15:14:413:59:159:388:44
10:13
+0:21
25.2M
25.20 mi15:18:264:03:009:393:45
10:52
+0:39
Finish
26.22 mi15:28:114:12:459:399:45
9:34
-1:18

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

9:17 /mi

Average Pace

9:39 /mi

Slowest Pace

10:52 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:49:46

91% of race

Time at Steady Pace

22:59

9% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 9:38 /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 mi11:44:5429:289:2929:28
9:29
#22041
10K
6.21 mi12:13:5458:289:2529:00
9:20
#22076
15K
9.32 mi12:43:191:27:539:2629:25
9:28
#22078
20K
12.43 mi13:13:071:57:419:2829:48
9:36
#22008
Half
13.11 mi13:19:272:04:019:286:20
9:17
#21974
25K
15.53 mi13:42:332:27:079:2823:06
9:32
#21803
30K
18.64 mi14:12:332:57:079:3030:00
9:39
#21489
20M
20.00 mi14:25:593:10:339:3213:26
9:53
#21370
21M
21.00 mi14:36:293:21:039:3410:30
10:30
#21267
35K
21.75 mi14:43:313:28:059:347:02
9:24
#21191
23M
23.00 mi14:56:053:40:399:3612:34
10:02
#21106
24M
24.00 mi15:05:573:50:319:369:52
9:52
#21053
40K
24.85 mi15:14:413:59:159:388:44
10:13
#21039
25.2M
25.20 mi15:18:264:03:009:393:45
10:52
#21026
Finish
26.22 mi15:28:114:12:459:399:45
9:34
#20992
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF60-64Seg. OverallSeg. FemalesSeg. F60-64
5K3.11 mi3.11 mi220418899889922160(Top 83%)8881(Top 78%)8881(Top 1685%)
10K6.21 mi3.10 mi22076-358893+68893+622032(Top 83%)8832(Top 77%)8832(Top 1676%)
15K9.32 mi3.11 mi22078-28880+138880+1322160(Top 83%)8881(Top 78%)8881(Top 1685%)
20K12.43 mi3.11 mi22008+708840+408840+4021831(Top 82%)8700(Top 76%)8700(Top 1651%)
Half13.11 mi0.68 mi21974+348817+238817+2321474(Top 81%)8503(Top 74%)8503(Top 1613%)
25K15.53 mi2.42 mi21803+1718710+1078710+10720931(Top 79%)8232(Top 72%)8232(Top 1562%)
30K18.64 mi3.11 mi21489+3148551+1598551+15919995(Top 75%)7767(Top 68%)7767(Top 1474%)
20M20.00 mi1.36 mi21370+1198504+478504+4720153(Top 76%)7956(Top 70%)7956(Top 1510%)
21M21.00 mi1.00 mi21267+1038461+438461+4319616(Top 74%)7714(Top 68%)7714(Top 1464%)
35K21.75 mi0.75 mi21191+768429+328429+3219583(Top 74%)7708(Top 67%)7708(Top 1463%)
23M23.00 mi1.25 mi21106+858392+378392+3720106(Top 76%)8019(Top 70%)8019(Top 1522%)
24M24.00 mi1.00 mi21053+538376+168376+1620432(Top 77%)8225(Top 72%)8225(Top 1561%)
40K24.85 mi0.85 mi21039+148381-58381-520537(Top 77%)8353(Top 73%)8353(Top 1585%)
25.2M25.20 mi0.35 mi21026+138380+18380+120193(Top 76%)8162(Top 71%)8162(Top 1549%)
Finish26.22 mi1.02 mi20992+348367+138367+1320374(Top 77%)8231(Top 72%)8231(Top 1562%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 83%
×21story building
+97ft-345ft

Overall

22160

Females

8881

F60-64

8881

5K→10K

3.1 - 6.2 mi

Top 83%
×5story building
+79ft-138ft

Overall

22032

Females

8832

F60-64

8832

10K→15K

6.2 - 9.3 mi

Top 83%
×3story building
+67ft-78ft

Overall

22160

Females

8881

F60-64

8881

15K→20K

9.3 - 12.4 mi

Top 82%
×5story building
+106ft-86ft

Overall

21831

Females

8700

F60-64

8700

20K→Half

12.4 - 13.1 mi

Top 81%
×2story building
+19ft-37ft

Overall

21474

Females

8503

F60-64

8503

Half→25K

13.1 - 15.5 mi

Top 79%
×4story building
+66ft-88ft

Overall

20931

Females

8232

F60-64

8232

25K→30K

15.5 - 18.6 mi

Top 75%
×9story building
+181ft-148ft

Overall

19995

Females

7767

F60-64

7767

30K→20M

18.6 - 20.0 mi

Top 76%
×5story building
+64ft-50ft

Overall

20153

Females

7956

F60-64

7956

20M→21M

20.0 - 21.0 mi

Top 74%
×8story building
+106ft-24ft

Overall

19616

Females

7714

F60-64

7714

21M→35K

21.0 - 21.8 mi

Top 74%
×7story building
+17ft-86ft

Overall

19583

Females

7708

F60-64

7708

35K→23M

21.8 - 23.0 mi

Top 76%
×5story building
+23ft-63ft

Overall

20106

Females

8019

F60-64

8019

23M→24M

23.0 - 24.0 mi

Top 77%
×6story building
+12ft-82ft

Overall

20432

Females

8225

F60-64

8225

24M→40K

24.0 - 24.9 mi

Top 77%
×1story
+6ft-20ft

Overall

20537

Females

8353

F60-64

8353

40K→25.2M

24.9 - 25.2 mi

Top 76%
×1story
+13ft-16ft

Overall

20193

Females

8162

F60-64

8162

25.2M→Finish

25.2 - 26.2 mi

Top 77%
×2story building
+22ft-21ft

Overall

20374

Females

8231

F60-64

8231

Passing Analysis

Category:
Athletes Passed
1798
Passed By
749
Net Change
+1049
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22041
5K → 10K230265-35#22041#22076
10K → 15K175177-2#22076#22078
15K → 20K171101+70#22078#22008
20K → Half4713+34#22008#21974
Half → 25K20130+171#21974#21803
25K → 30K32713+314#21803#21489
30K → 20M13617+119#21489#21370
20M → 21M12522+103#21370#21267
21M → 35K804+76#21267#21191
35K → 23M10520+85#21191#21106
23M → 24M6613+53#21106#21053
24M → 40K4935+14#21053#21039
40K → 25.2M2916+13#21039#21026
25.2M → Finish5723+34#21026#20992
TOTALS1798749+1049
📊

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