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BOSTON MARATHON 2023

Nancy Robertson

Bib: 24068•F

WA

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
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
29:40
Rank: #22242
Start → 5K
9:33/mi
29:40 split
10K· 6.21 mi
58:55
Rank: #22289 (-47)
5K → 10K
9:25/mi
29:15 split
15K· 9.32 mi
1:28:42
Rank: #22371 (-82)
10K → 15K
9:35/mi
29:47 split
20K· 12.43 mi
1:59:00
Rank: #22319 (+52)
15K → 20K
9:45/mi
30:18 split
Half· 13.11 mi
2:05:32
Rank: #22326 (-7)
20K → Half
9:35/mi
6:32 split
25K· 15.53 mi
2:29:04
Rank: #22186 (+140)
Half → 25K
9:42/mi
23:32 split
30K· 18.64 mi
3:01:07
Rank: #22112 (+74)
25K → 30K
10:19/mi
32:03 split
20M
3:14:37
Rank: #21963 (+149)
30K → 20M
9:56/mi
13:30 split
21M
3:25:10
Rank: #21847 (+116)
20M → 21M
10:33/mi
10:33 split
35K· 21.75 mi
3:32:24
Rank: #21803 (+44)
21M → 35K
9:40/mi
7:14 split
23M
3:45:13
Rank: #21728 (+75)
35K → 23M
10:14/mi
12:49 split
24M
3:54:41
Rank: #21620 (+108)
23M → 24M
9:28/mi
9:28 split
40K· 24.85 mi
4:02:55
Rank: #21517 (+103)
24M → 40K
9:38/mi
8:14 split
25.2M
4:06:34
Rank: #21485 (+32)
40K → 25.2M
10:35/mi
3:39 split
Finish· 26.22 mi
4:15:58
Rank: #21385 (+100)
25.2M → Finish
9:13/mi
9:24 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:05:32
Pace9:35 /mi
2nd Half
Distance13.11 mi
Time2:10:26
Pace9:57 /mi
📊Positive Split: 3.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:45:3529:409:3329:40
9:33
-
10K
6.21 mi12:14:5058:559:2929:15
9:25
-0:08
15K
9.32 mi12:44:371:28:429:3129:47
9:35
+0:10
20K
12.43 mi13:14:551:59:009:3530:18
9:45
+0:10
Half
13.11 mi13:21:272:05:329:356:32
9:35
-0:10
25K
15.53 mi13:44:592:29:049:3623:32
9:42
+0:07
30K
18.64 mi14:17:023:01:079:4332:03
10:19
+0:37
20M
20.00 mi14:30:323:14:379:4413:30
9:56
-0:23
21M
21.00 mi14:41:053:25:109:4610:33
10:33
+0:37
35K
21.75 mi14:48:193:32:249:467:14
9:40
-0:53
23M
23.00 mi15:01:083:45:139:4812:49
10:14
+0:34
24M
24.00 mi15:10:363:54:419:479:28
9:28
-0:46
40K
24.85 mi15:18:504:02:559:468:14
9:38
+0:10
25.2M
25.20 mi15:22:294:06:349:473:39
10:35
+0:57
Finish
26.22 mi15:31:534:15:589:469:24
9:13
-1:22

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

9:13 /mi

Average Pace

9:46 /mi

Slowest Pace

10:35 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:16:54

77% of race

Time at Steady Pace

59:04

23% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 9:46 /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 mi11:45:3529:409:3329:40
9:33
#22242
10K
6.21 mi12:14:5058:559:2929:15
9:25
#22289
15K
9.32 mi12:44:371:28:429:3129:47
9:35
#22371
20K
12.43 mi13:14:551:59:009:3530:18
9:45
#22319
Half
13.11 mi13:21:272:05:329:356:32
9:35
#22326
25K
15.53 mi13:44:592:29:049:3623:32
9:42
#22186
30K
18.64 mi14:17:023:01:079:4332:03
10:19
#22112
20M
20.00 mi14:30:323:14:379:4413:30
9:56
#21963
21M
21.00 mi14:41:053:25:109:4610:33
10:33
#21847
35K
21.75 mi14:48:193:32:249:467:14
9:40
#21803
23M
23.00 mi15:01:083:45:139:4812:49
10:14
#21728
24M
24.00 mi15:10:363:54:419:479:28
9:28
#21620
40K
24.85 mi15:18:504:02:559:468:14
9:38
#21517
25.2M
25.20 mi15:22:294:06:349:473:39
10:35
#21485
Finish
26.22 mi15:31:534:15:589:469:24
9:13
#21385
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF60-64Seg. OverallSeg. FemalesSeg. F60-64
5K3.11 mi3.11 mi222428997899722489(Top 84%)9062(Top 79%)9062(Top 1720%)
10K6.21 mi3.10 mi22289-478995+28995+222254(Top 84%)8952(Top 78%)8952(Top 1699%)
15K9.32 mi3.11 mi22371-829029-349029-3422489(Top 84%)9062(Top 79%)9062(Top 1720%)
20K12.43 mi3.11 mi22319+528992+378992+3722292(Top 84%)8957(Top 78%)8957(Top 1700%)
Half13.11 mi0.68 mi22326-78993-18993-122327(Top 84%)8962(Top 78%)8962(Top 1701%)
25K15.53 mi2.42 mi22186+1408933+608933+6021486(Top 81%)8551(Top 75%)8551(Top 1623%)
30K18.64 mi3.11 mi22112+748900+338900+3321812(Top 82%)8797(Top 77%)8797(Top 1669%)
20M20.00 mi1.36 mi21963+1498823+778823+7720308(Top 76%)8032(Top 70%)8032(Top 1524%)
21M21.00 mi1.00 mi21847+1168766+578766+5719764(Top 74%)7805(Top 68%)7805(Top 1481%)
35K21.75 mi0.75 mi21803+448755+118755+1120398(Top 77%)8172(Top 72%)8172(Top 1551%)
23M23.00 mi1.25 mi21728+758728+278728+2720682(Top 78%)8336(Top 73%)8336(Top 1582%)
24M24.00 mi1.00 mi21620+1088680+488680+4819126(Top 72%)7523(Top 66%)7523(Top 1428%)
40K24.85 mi0.85 mi21517+1038634+468634+4618827(Top 71%)7400(Top 65%)7400(Top 1404%)
25.2M25.20 mi0.35 mi21485+328625+98625+919417(Top 73%)7751(Top 68%)7751(Top 1471%)
Finish26.22 mi1.02 mi21385+1008579+468579+4619063(Top 72%)7479(Top 65%)7479(Top 1419%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 84%
×21story building
+97ft-345ft

Overall

22489

Females

9062

F60-64

9062

5K→10K

3.1 - 6.2 mi

Top 84%
×5story building
+79ft-138ft

Overall

22254

Females

8952

F60-64

8952

10K→15K

6.2 - 9.3 mi

Top 84%
×3story building
+67ft-78ft

Overall

22489

Females

9062

F60-64

9062

15K→20K

9.3 - 12.4 mi

Top 84%
×5story building
+106ft-86ft

Overall

22292

Females

8957

F60-64

8957

20K→Half

12.4 - 13.1 mi

Top 84%
×2story building
+19ft-37ft

Overall

22327

Females

8962

F60-64

8962

Half→25K

13.1 - 15.5 mi

Top 81%
×4story building
+66ft-88ft

Overall

21486

Females

8551

F60-64

8551

25K→30K

15.5 - 18.6 mi

Top 82%
×9story building
+181ft-148ft

Overall

21812

Females

8797

F60-64

8797

30K→20M

18.6 - 20.0 mi

Top 76%
×5story building
+64ft-50ft

Overall

20308

Females

8032

F60-64

8032

20M→21M

20.0 - 21.0 mi

Top 74%
×8story building
+106ft-24ft

Overall

19764

Females

7805

F60-64

7805

21M→35K

21.0 - 21.8 mi

Top 77%
×7story building
+17ft-86ft

Overall

20398

Females

8172

F60-64

8172

35K→23M

21.8 - 23.0 mi

Top 78%
×5story building
+23ft-63ft

Overall

20682

Females

8336

F60-64

8336

23M→24M

23.0 - 24.0 mi

Top 72%
×6story building
+12ft-82ft

Overall

19126

Females

7523

F60-64

7523

24M→40K

24.0 - 24.9 mi

Top 71%
×1story
+6ft-20ft

Overall

18827

Females

7400

F60-64

7400

40K→25.2M

24.9 - 25.2 mi

Top 73%
×1story
+13ft-16ft

Overall

19417

Females

7751

F60-64

7751

25.2M→Finish

25.2 - 26.2 mi

Top 72%
×2story building
+22ft-21ft

Overall

19063

Females

7479

F60-64

7479

Passing Analysis

Category:
Athletes Passed
1661
Passed By
804
Net Change
+857
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22242
5K → 10K218265-47#22242#22289
10K → 15K126208-82#22289#22371
15K → 20K15098+52#22371#22319
20K → Half2229-7#22319#22326
Half → 25K17636+140#22326#22186
25K → 30K16692+74#22186#22112
30K → 20M1567+149#22112#21963
20M → 21M12812+116#21963#21847
21M → 35K5410+44#21847#21803
35K → 23M9924+75#21803#21728
23M → 24M1135+108#21728#21620
24M → 40K1052+103#21620#21517
40K → 25.2M386+32#21517#21485
25.2M → Finish11010+100#21485#21385
TOTALS1661804+857
📊

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