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BOSTON MARATHON 2023

Nicole Duback

Bib: 18464•F

CO

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 38%
Masters (Masters Women)
#0 / 6539
Top 25%
Division (F50-54)
#0 / 1207
Top 16%
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
7:52/mi
24:27
↑ 97↓ 3451.5%
10K· 6.21 mi
8:00/mi
49:18
↑ 79↓ 1380.4%
15K· 9.32 mi
8:02/mi
1:14:15
↑ 67↓ 78
20K· 12.43 mi
8:02/mi
1:39:13
↑ 106↓ 860.1%
Half· 13.11 mi
7:52/mi
1:44:35
↑ 19↓ 370.5%
25K· 15.53 mi
8:08/mi
2:04:17
↑ 66↓ 880.2%
30K· 18.64 mi
8:32/mi
2:30:49
↑ 181↓ 1480.2%
20M
8:34/mi
2:42:27
↑ 64↓ 500.2%
21M
9:20/mi
2:51:47
↑ 106↓ 241.6%
35K· 21.75 mi
8:21/mi
2:58:02
↑ 17↓ 861.7%
23M
8:33/mi
3:08:44
↑ 23↓ 630.6%
24M
8:16/mi
3:17:00
↓ 821.3%
40K· 24.85 mi
8:50/mi
3:24:33
↓ 200.3%
25.2M
9:20/mi
3:27:46
↑ 13↓ 160.2%
Finish· 26.22 mi
8:34/mi
3:36:30
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:44:35
Pace7:59 /mi
2nd Half
Distance13.11 mi
Time1:51:55
Pace8:32 /mi
📊Positive Split: 7.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:15:3024:277:5224:27
7:52
-
10K
6.21 mi11:40:2149:187:5624:51
8:00
+0:08
15K
9.32 mi12:05:181:14:157:5824:57
8:02
+0:02
20K
12.43 mi12:30:161:39:137:5924:58
8:02
0:00
Half
13.11 mi12:35:381:44:357:595:22
7:52
-0:10
25K
15.53 mi12:55:202:04:178:0019:42
8:08
+0:16
30K
18.64 mi13:21:522:30:498:0526:32
8:32
+0:24
20M
20.00 mi13:33:302:42:278:0711:38
8:34
+0:02
21M
21.00 mi13:42:502:51:478:119:20
9:20
+0:46
35K
21.75 mi13:49:052:58:028:116:15
8:21
-0:59
23M
23.00 mi13:59:473:08:448:1210:42
8:33
+0:12
24M
24.00 mi14:08:033:17:008:138:16
8:16
-0:17
40K
24.85 mi14:15:363:24:338:147:33
8:50
+0:34
25.2M
25.20 mi14:18:493:27:468:153:13
9:20
+0:30
Finish
26.22 mi14:27:333:36:308:168:44
8:34
-0:46

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

7:52 /mi

Average Pace

8:16 /mi

Slowest Pace

9:20 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:16:24

91% of race

Time at Steady Pace

7:33

3% of race

Time at Slower Pace

12:33

6% of race

Average Pace: 8:15 /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 mi11:15:3024:277:5224:27
7:52
#13018
10K
6.21 mi11:40:2149:187:5624:51
8:00
#13861
15K
9.32 mi12:05:181:14:157:5824:57
8:02
#14115
20K
12.43 mi12:30:161:39:137:5924:58
8:02
#13971
Half
13.11 mi12:35:381:44:357:595:22
7:52
#13929
25K
15.53 mi12:55:202:04:178:0019:42
8:08
#13882
30K
18.64 mi13:21:522:30:498:0526:32
8:32
#14033
20M
20.00 mi13:33:302:42:278:0711:38
8:34
#14028
21M
21.00 mi13:42:502:51:478:119:20
9:20
#14072
35K
21.75 mi13:49:052:58:028:116:15
8:21
#14060
23M
23.00 mi13:59:473:08:448:1210:42
8:33
#14003
24M
24.00 mi14:08:033:17:008:138:16
8:16
#13940
40K
24.85 mi14:15:363:24:338:147:33
8:50
#13971
25.2M
25.20 mi14:18:493:27:468:153:13
9:20
#13982
Finish
26.22 mi14:27:333:36:308:168:44
8:34
#14060
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi130183451345114650(Top 55%)4474(Top 39%)4474(Top 371%)
10K6.21 mi3.10 mi13861-8433957-5063957-50614803(Top 56%)4547(Top 40%)4547(Top 377%)
15K9.32 mi3.11 mi14115-2544130-1734130-17314650(Top 55%)4474(Top 39%)4474(Top 371%)
20K12.43 mi3.11 mi13971+1444067+634067+6313741(Top 52%)3961(Top 35%)3961(Top 328%)
Half13.11 mi0.68 mi13929+424042+254042+2513405(Top 50%)3754(Top 33%)3754(Top 311%)
25K15.53 mi2.42 mi13882+474043-14043-113706(Top 51%)4041(Top 35%)4041(Top 335%)
30K18.64 mi3.11 mi14033-1514170-1274170-12714550(Top 55%)4654(Top 41%)4654(Top 386%)
20M20.00 mi1.36 mi14028+54179-94179-914017(Top 53%)4417(Top 39%)4417(Top 366%)
21M21.00 mi1.00 mi14072-444231-524231-5215184(Top 57%)5156(Top 45%)5156(Top 427%)
35K21.75 mi0.75 mi14060+124237-64237-614456(Top 54%)4808(Top 42%)4808(Top 398%)
23M23.00 mi1.25 mi14003+574233+44233+413518(Top 51%)4349(Top 38%)4349(Top 360%)
24M24.00 mi1.00 mi13940+634219+144219+1413091(Top 49%)4180(Top 37%)4180(Top 346%)
40K24.85 mi0.85 mi13971-314255-364255-3615247(Top 57%)5429(Top 48%)5429(Top 450%)
25.2M25.20 mi0.35 mi13982-114266-114266-1114366(Top 54%)4936(Top 43%)4936(Top 409%)
Finish26.22 mi1.02 mi14060-784335-694335-6915831(Top 59%)5710(Top 50%)5710(Top 473%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 55%
×21story building
+97ft-345ft

Overall

14650

Females

4474

F50-54

4474

5K→10K

3.1 - 6.2 mi

Top 56%
×5story building
+79ft-138ft

Overall

14803

Females

4547

F50-54

4547

10K→15K

6.2 - 9.3 mi

Top 55%
×3story building
+67ft-78ft

Overall

14650

Females

4474

F50-54

4474

15K→20K

9.3 - 12.4 mi

Top 52%
×5story building
+106ft-86ft

Overall

13741

Females

3961

F50-54

3961

20K→Half

12.4 - 13.1 mi

Top 50%
×2story building
+19ft-37ft

Overall

13405

Females

3754

F50-54

3754

Half→25K

13.1 - 15.5 mi

Top 51%
×4story building
+66ft-88ft

Overall

13706

Females

4041

F50-54

4041

25K→30K

15.5 - 18.6 mi

Top 55%
×9story building
+181ft-148ft

Overall

14550

Females

4654

F50-54

4654

30K→20M

18.6 - 20.0 mi

Top 53%
×5story building
+64ft-50ft

Overall

14017

Females

4417

F50-54

4417

20M→21M

20.0 - 21.0 mi

Top 57%
×8story building
+106ft-24ft

Overall

15184

Females

5156

F50-54

5156

21M→35K

21.0 - 21.8 mi

Top 54%
×7story building
+17ft-86ft

Overall

14456

Females

4808

F50-54

4808

35K→23M

21.8 - 23.0 mi

Top 51%
×5story building
+23ft-63ft

Overall

13518

Females

4349

F50-54

4349

23M→24M

23.0 - 24.0 mi

Top 49%
×6story building
+12ft-82ft

Overall

13091

Females

4180

F50-54

4180

24M→40K

24.0 - 24.9 mi

Top 57%
×1story
+6ft-20ft

Overall

15247

Females

5429

F50-54

5429

40K→25.2M

24.9 - 25.2 mi

Top 54%
×1story
+13ft-16ft

Overall

14366

Females

4936

F50-54

4936

25.2M→Finish

25.2 - 26.2 mi

Top 59%
×2story building
+22ft-21ft

Overall

15831

Females

5710

F50-54

5710

Passing Analysis

Category:
Athletes Passed
1318
Passed By
2360
Net Change
-1042
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13018
5K → 10K68911-843#13018#13861
10K → 15K97351-254#13861#14115
15K → 20K247103+144#14115#13971
20K → Half5816+42#13971#13929
Half → 25K152105+47#13929#13882
25K → 30K139290-151#13882#14033
30K → 20M9792+5#14033#14028
20M → 21M75119-44#14028#14072
21M → 35K5139+12#14072#14060
35K → 23M11457+57#14060#14003
23M → 24M9734+63#14003#13940
24M → 40K5889-31#13940#13971
40K → 25.2M2334-11#13971#13982
25.2M → Finish42120-78#13982#14060
TOTALS13182360-1042
📊

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