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BOSTON MARATHON 2023

Courtnie Duncan

Bib: 15334•F

UT

0:00
0:00
/ mi
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Division (F18-39)
#0 / 4884
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
8:49/mi
27:24
↑ 97↓ 3451.5%
10K· 6.21 mi
9:18/mi
56:17
↑ 79↓ 1380.4%
15K· 9.32 mi
9:25/mi
1:25:32
↑ 67↓ 78
20K· 12.43 mi
9:48/mi
1:56:00
↑ 106↓ 860.1%
Half· 13.11 mi
9:36/mi
2:02:33
↑ 19↓ 370.5%
25K· 15.53 mi
10:18/mi
2:27:31
↑ 66↓ 880.2%
30K· 18.64 mi
11:02/mi
3:01:47
↑ 181↓ 1480.2%
20M
11:25/mi
3:17:18
↑ 64↓ 500.2%
21M
12:42/mi
3:30:00
↑ 106↓ 241.6%
35K· 21.75 mi
12:11/mi
3:39:07
↑ 17↓ 861.7%
23M
11:01/mi
3:52:54
↑ 23↓ 630.6%
24M
10:35/mi
4:03:29
↓ 821.3%
40K· 24.85 mi
11:15/mi
4:13:06
↓ 200.3%
25.2M
12:19/mi
4:17:21
↑ 13↓ 160.2%
Finish· 26.22 mi
10:34/mi
4:28:07
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:02:33
Pace9:21 /mi
2nd Half
Distance13.11 mi
Time2:25:34
Pace11:06 /mi
📊Positive Split: 18.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:58:4027:248:4927:24
8:49
-
10K
6.21 mi11:27:3356:179:0328:53
9:18
+0:29
15K
9.32 mi11:56:481:25:329:1129:15
9:25
+0:07
20K
12.43 mi12:27:161:56:009:2030:28
9:48
+0:23
Half
13.11 mi12:33:492:02:339:216:33
9:36
-0:12
25K
15.53 mi12:58:472:27:319:3024:58
10:18
+0:42
30K
18.64 mi13:33:033:01:479:4534:16
11:02
+0:44
20M
20.00 mi13:48:343:17:189:5215:31
11:25
+0:23
21M
21.00 mi14:01:163:30:0010:0012:42
12:42
+1:17
35K
21.75 mi14:10:233:39:0710:059:07
12:11
-0:31
23M
23.00 mi14:24:103:52:5410:0813:47
11:01
-1:10
24M
24.00 mi14:34:454:03:2910:0910:35
10:35
-0:26
40K
24.85 mi14:44:224:13:0610:119:37
11:15
+0:40
25.2M
25.20 mi14:48:374:17:2110:134:15
12:19
+1:04
Finish
26.22 mi14:59:234:28:0710:1410:46
10:34
-1:45

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

8:49 /mi

Average Pace

10:14 /mi

Slowest Pace

12:42 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:02:33

46% of race

Time at Steady Pace

1:34:22

35% of race

Time at Slower Pace

51:12

19% of race

Average Pace: 10:14 /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 mi10:58:4027:248:4927:24
8:49
#19582
10K
6.21 mi11:27:3356:179:0328:53
9:18
#20896
15K
9.32 mi11:56:481:25:329:1129:15
9:25
#21284
20K
12.43 mi12:27:161:56:009:2030:28
9:48
#21627
Half
13.11 mi12:33:492:02:339:216:33
9:36
#21661
25K
15.53 mi12:58:472:27:319:3024:58
10:18
#21879
30K
18.64 mi13:33:033:01:479:4534:16
11:02
#22218
20M
20.00 mi13:48:343:17:189:5215:31
11:25
#22317
21M
21.00 mi14:01:163:30:0010:0012:42
12:42
#22418
35K
21.75 mi14:10:233:39:0710:059:07
12:11
#22547
23M
23.00 mi14:24:103:52:5410:0813:47
11:01
#22540
24M
24.00 mi14:34:454:03:2910:0910:35
10:35
#22528
40K
24.85 mi14:44:224:13:0610:119:37
11:15
#22535
25.2M
25.20 mi14:48:374:17:2110:134:15
12:19
#22556
Finish
26.22 mi14:59:234:28:0710:1410:46
10:34
#22568
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi195827568756822009(Top 83%)8794(Top 77%)8794(Top 180%)
10K6.21 mi3.10 mi20896-13148262-6948262-69421931(Top 82%)8787(Top 77%)8787(Top 180%)
15K9.32 mi3.11 mi21284-3888434-1728434-17222009(Top 83%)8794(Top 77%)8794(Top 180%)
20K12.43 mi3.11 mi21627-3438625-1918625-19122429(Top 84%)9041(Top 79%)9041(Top 185%)
Half13.11 mi0.68 mi21661-348645-208645-2022417(Top 84%)9025(Top 79%)9025(Top 185%)
25K15.53 mi2.42 mi21879-2188758-1138758-11322833(Top 86%)9291(Top 81%)9291(Top 190%)
30K18.64 mi3.11 mi22218-3398956-1988956-19823134(Top 87%)9536(Top 83%)9536(Top 195%)
20M20.00 mi1.36 mi22317-999021-659021-6523388(Top 88%)9725(Top 85%)9725(Top 199%)
21M21.00 mi1.00 mi22418-1019101-809101-8023713(Top 89%)9931(Top 87%)9931(Top 203%)
35K21.75 mi0.75 mi22547-1299167-669167-6624875(Top 93%)10591(Top 93%)10591(Top 217%)
23M23.00 mi1.25 mi22540+79182-159182-1522372(Top 84%)9255(Top 81%)9255(Top 189%)
24M24.00 mi1.00 mi22528+129182918222210(Top 83%)9215(Top 81%)9215(Top 189%)
40K24.85 mi0.85 mi22535-79187-59187-522819(Top 86%)9568(Top 84%)9568(Top 196%)
25.2M25.20 mi0.35 mi22556-219208-219208-2123028(Top 86%)9674(Top 85%)9674(Top 198%)
Finish26.22 mi1.02 mi22568-129226-189226-1823147(Top 87%)9717(Top 85%)9717(Top 199%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 83%
×21story building
+97ft-345ft

Overall

22009

Females

8794

F18-39

8794

5K→10K

3.1 - 6.2 mi

Top 82%
×5story building
+79ft-138ft

Overall

21931

Females

8787

F18-39

8787

10K→15K

6.2 - 9.3 mi

Top 83%
×3story building
+67ft-78ft

Overall

22009

Females

8794

F18-39

8794

15K→20K

9.3 - 12.4 mi

Top 84%
×5story building
+106ft-86ft

Overall

22429

Females

9041

F18-39

9041

20K→Half

12.4 - 13.1 mi

Top 84%
×2story building
+19ft-37ft

Overall

22417

Females

9025

F18-39

9025

Half→25K

13.1 - 15.5 mi

Top 86%
×4story building
+66ft-88ft

Overall

22833

Females

9291

F18-39

9291

25K→30K

15.5 - 18.6 mi

Top 87%
×9story building
+181ft-148ft

Overall

23134

Females

9536

F18-39

9536

30K→20M

18.6 - 20.0 mi

Top 88%
×5story building
+64ft-50ft

Overall

23388

Females

9725

F18-39

9725

20M→21M

20.0 - 21.0 mi

Top 89%
×8story building
+106ft-24ft

Overall

23713

Females

9931

F18-39

9931

21M→35K

21.0 - 21.8 mi

Top 93%
×7story building
+17ft-86ft

Overall

24875

Females

10591

F18-39

10591

35K→23M

21.8 - 23.0 mi

Top 84%
×5story building
+23ft-63ft

Overall

22372

Females

9255

F18-39

9255

23M→24M

23.0 - 24.0 mi

Top 83%
×6story building
+12ft-82ft

Overall

22210

Females

9215

F18-39

9215

24M→40K

24.0 - 24.9 mi

Top 86%
×1story
+6ft-20ft

Overall

22819

Females

9568

F18-39

9568

40K→25.2M

24.9 - 25.2 mi

Top 86%
×1story
+13ft-16ft

Overall

23028

Females

9674

F18-39

9674

25.2M→Finish

25.2 - 26.2 mi

Top 87%
×2story building
+22ft-21ft

Overall

23147

Females

9717

F18-39

9717

Passing Analysis

Category:
Athletes Passed
480
Passed By
3466
Net Change
-2986
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19582
5K → 10K281342-1314#19582#20896
10K → 15K48436-388#20896#21284
15K → 20K42385-343#21284#21627
20K → Half1650-34#21627#21661
Half → 25K48266-218#21661#21879
25K → 30K51390-339#21879#22218
30K → 20M33132-99#22218#22317
20M → 21M27128-101#22317#22418
21M → 35K14143-129#22418#22547
35K → 23M6457+7#22547#22540
23M → 24M4028+12#22540#22528
24M → 40K2229-7#22528#22535
40K → 25.2M1132-21#22535#22556
25.2M → Finish3648-12#22556#22568
TOTALS4803466-2986
📊

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