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BOSTON MARATHON 2023

Vicki Dufner

Bib: 20606•F

NV

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
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
9:04/mi
28:11
↑ 97↓ 3451.5%
10K· 6.21 mi
9:06/mi
56:26
↑ 79↓ 1380.4%
15K· 9.32 mi
9:54/mi
1:27:11
↑ 67↓ 78
20K· 12.43 mi
9:27/mi
1:56:34
↑ 106↓ 860.1%
Half· 13.11 mi
9:20/mi
2:02:56
↑ 19↓ 370.5%
25K· 15.53 mi
9:40/mi
2:26:23
↑ 66↓ 880.2%
30K· 18.64 mi
9:53/mi
2:57:06
↑ 181↓ 1480.2%
20M
9:32/mi
3:10:03
↑ 64↓ 500.2%
21M
10:23/mi
3:20:26
↑ 106↓ 241.6%
35K· 21.75 mi
9:47/mi
3:27:45
↑ 17↓ 861.7%
23M
9:59/mi
3:40:15
↑ 23↓ 630.6%
24M
10:05/mi
3:50:20
↓ 821.3%
40K· 24.85 mi
10:15/mi
3:59:06
↓ 200.3%
25.2M
12:02/mi
4:03:15
↑ 13↓ 160.2%
Finish· 26.22 mi
10:04/mi
4:13:30
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:02:56
Pace9:23 /mi
2nd Half
Distance13.11 mi
Time2:10:34
Pace9:58 /mi
📊Positive Split: 6.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:22:0428:119:0428:11
9:04
-
10K
6.21 mi11:50:1956:269:0528:15
9:06
+0:02
15K
9.32 mi12:21:041:27:119:2130:45
9:54
+0:48
20K
12.43 mi12:50:271:56:349:2329:23
9:27
-0:27
Half
13.11 mi12:56:492:02:569:236:22
9:20
-0:07
25K
15.53 mi13:20:162:26:239:2523:27
9:40
+0:20
30K
18.64 mi13:50:592:57:069:3030:43
9:53
+0:13
20M
20.00 mi14:03:563:10:039:3012:57
9:32
-0:21
21M
21.00 mi14:14:193:20:269:3310:23
10:23
+0:51
35K
21.75 mi14:21:383:27:459:337:19
9:47
-0:36
23M
23.00 mi14:34:083:40:159:3512:30
9:59
+0:12
24M
24.00 mi14:44:133:50:209:3610:05
10:05
+0:06
40K
24.85 mi14:52:593:59:069:378:46
10:15
+0:10
25.2M
25.20 mi14:57:084:03:159:394:09
12:02
+1:47
Finish
26.22 mi15:07:234:13:309:4110:15
10:04
-1:58

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

9:04 /mi

Average Pace

9:41 /mi

Slowest Pace

12:02 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:45:08

41% of race

Time at Steady Pace

2:05:04

49% of race

Time at Slower Pace

23:18

9% of race

Average Pace: 9:40 /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 mi11:22:0428:119:0428:11
9:04
#20757
10K
6.21 mi11:50:1956:269:0528:15
9:06
#20990
15K
9.32 mi12:21:041:27:119:2130:45
9:54
#21850
20K
12.43 mi12:50:271:56:349:2329:23
9:27
#21741
Half
13.11 mi12:56:492:02:569:236:22
9:20
#21747
25K
15.53 mi13:20:162:26:239:2523:27
9:40
#21648
30K
18.64 mi13:50:592:57:069:3030:43
9:53
#21486
20M
20.00 mi14:03:563:10:039:3012:57
9:32
#21288
21M
21.00 mi14:14:193:20:269:3310:23
10:23
#21179
35K
21.75 mi14:21:383:27:459:337:19
9:47
#21145
23M
23.00 mi14:34:083:40:159:3512:30
9:59
#21048
24M
24.00 mi14:44:133:50:209:3610:05
10:05
#21041
40K
24.85 mi14:52:593:59:069:378:46
10:15
#21020
25.2M
25.20 mi14:57:084:03:159:394:09
12:02
#21063
Finish
26.22 mi15:07:234:13:309:4110:15
10:04
#21093
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi207578249824923298(Top 88%)9491(Top 83%)9491(Top 505%)
10K6.21 mi3.10 mi20990-2338319-708319-7021245(Top 80%)8415(Top 74%)8415(Top 448%)
15K9.32 mi3.11 mi21850-8608754-4358754-43523298(Top 88%)9491(Top 83%)9491(Top 505%)
20K12.43 mi3.11 mi21741+1098676+788676+7821425(Top 80%)8482(Top 74%)8482(Top 452%)
Half13.11 mi0.68 mi21747-68682-68682-621637(Top 81%)8589(Top 75%)8589(Top 457%)
25K15.53 mi2.42 mi21648+998625+578625+5721366(Top 80%)8479(Top 74%)8479(Top 451%)
30K18.64 mi3.11 mi21486+1628548+778548+7720720(Top 78%)8181(Top 72%)8181(Top 436%)
20M20.00 mi1.36 mi21288+1988460+888460+8818997(Top 71%)7303(Top 64%)7303(Top 389%)
21M21.00 mi1.00 mi21179+1098413+478413+4719244(Top 72%)7492(Top 66%)7492(Top 399%)
35K21.75 mi0.75 mi21145+348403+108403+1020704(Top 78%)8335(Top 73%)8335(Top 444%)
23M23.00 mi1.25 mi21048+978358+458358+4519959(Top 75%)7934(Top 69%)7934(Top 422%)
24M24.00 mi1.00 mi21041+78367-98367-921034(Top 79%)8564(Top 75%)8564(Top 456%)
40K24.85 mi0.85 mi21020+218368-18368-120637(Top 78%)8409(Top 74%)8409(Top 448%)
25.2M25.20 mi0.35 mi21063-438399-318399-3122575(Top 85%)9435(Top 83%)9435(Top 502%)
Finish26.22 mi1.02 mi21093-308423-248423-2421927(Top 82%)9078(Top 79%)9078(Top 483%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 88%
×21story building
+97ft-345ft

Overall

23298

Females

9491

F40-44

9491

5K→10K

3.1 - 6.2 mi

Top 80%
×5story building
+79ft-138ft

Overall

21245

Females

8415

F40-44

8415

10K→15K

6.2 - 9.3 mi

Top 88%
×3story building
+67ft-78ft

Overall

23298

Females

9491

F40-44

9491

15K→20K

9.3 - 12.4 mi

Top 80%
×5story building
+106ft-86ft

Overall

21425

Females

8482

F40-44

8482

20K→Half

12.4 - 13.1 mi

Top 81%
×2story building
+19ft-37ft

Overall

21637

Females

8589

F40-44

8589

Half→25K

13.1 - 15.5 mi

Top 80%
×4story building
+66ft-88ft

Overall

21366

Females

8479

F40-44

8479

25K→30K

15.5 - 18.6 mi

Top 78%
×9story building
+181ft-148ft

Overall

20720

Females

8181

F40-44

8181

30K→20M

18.6 - 20.0 mi

Top 71%
×5story building
+64ft-50ft

Overall

18997

Females

7303

F40-44

7303

20M→21M

20.0 - 21.0 mi

Top 72%
×8story building
+106ft-24ft

Overall

19244

Females

7492

F40-44

7492

21M→35K

21.0 - 21.8 mi

Top 78%
×7story building
+17ft-86ft

Overall

20704

Females

8335

F40-44

8335

35K→23M

21.8 - 23.0 mi

Top 75%
×5story building
+23ft-63ft

Overall

19959

Females

7934

F40-44

7934

23M→24M

23.0 - 24.0 mi

Top 79%
×6story building
+12ft-82ft

Overall

21034

Females

8564

F40-44

8564

24M→40K

24.0 - 24.9 mi

Top 78%
×1story
+6ft-20ft

Overall

20637

Females

8409

F40-44

8409

40K→25.2M

24.9 - 25.2 mi

Top 85%
×1story
+13ft-16ft

Overall

22575

Females

9435

F40-44

9435

25.2M→Finish

25.2 - 26.2 mi

Top 82%
×2story building
+22ft-21ft

Overall

21927

Females

9078

F40-44

9078

Passing Analysis

Category:
Athletes Passed
1390
Passed By
1726
Net Change
-336
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20757
5K → 10K188421-233#20757#20990
10K → 15K12872-860#20990#21850
15K → 20K18778+109#21850#21741
20K → Half1925-6#21741#21747
Half → 25K14647+99#21747#21648
25K → 30K21351+162#21648#21486
30K → 20M2024+198#21486#21288
20M → 21M12718+109#21288#21179
21M → 35K5723+34#21179#21145
35K → 23M10811+97#21145#21048
23M → 24M4538+7#21048#21041
24M → 40K4726+21#21041#21020
40K → 25.2M851-43#21020#21063
25.2M → Finish3161-30#21063#21093
TOTALS13901726-336
📊

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