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BOSTON MARATHON 2023

Natasha Vo

Bib: 23094•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 (F50-54)
#0 / 1207
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
8:39/mi
26:52
↑ 97↓ 3451.5%
10K· 6.21 mi
8:24/mi
52:58
↑ 79↓ 1380.4%
15K· 9.32 mi
8:28/mi
1:19:15
↑ 67↓ 78
20K· 12.43 mi
8:34/mi
1:45:51
↑ 106↓ 860.1%
Half· 13.11 mi
8:29/mi
1:51:38
↑ 19↓ 370.5%
25K· 15.53 mi
8:50/mi
2:13:03
↑ 66↓ 880.2%
30K· 18.64 mi
9:14/mi
2:41:45
↑ 181↓ 1480.2%
20M
9:24/mi
2:54:32
↑ 64↓ 500.2%
21M
10:24/mi
3:04:56
↑ 106↓ 241.6%
35K· 21.75 mi
8:53/mi
3:11:35
↑ 17↓ 861.7%
23M
9:59/mi
3:24:05
↑ 23↓ 630.6%
24M
9:46/mi
3:33:51
↓ 821.3%
40K· 24.85 mi
10:15/mi
3:42:37
↓ 200.3%
25.2M
10:58/mi
3:46:24
↑ 13↓ 160.2%
Finish· 26.22 mi
10:16/mi
3:56:52
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:51:38
Pace8:31 /mi
2nd Half
Distance13.11 mi
Time2:05:14
Pace9:33 /mi
📊Positive Split: 12.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:23:1026:528:3926:52
8:39
-
10K
6.21 mi11:49:1652:588:3126:06
8:24
-0:15
15K
9.32 mi12:15:331:19:158:3026:17
8:28
+0:04
20K
12.43 mi12:42:091:45:518:3126:36
8:34
+0:06
Half
13.11 mi12:47:561:51:388:315:47
8:29
-0:05
25K
15.53 mi13:09:212:13:038:3421:25
8:50
+0:21
30K
18.64 mi13:38:032:41:458:4128:42
9:14
+0:24
20M
20.00 mi13:50:502:54:328:4412:47
9:24
+0:10
21M
21.00 mi14:01:143:04:568:4810:24
10:24
+1:00
35K
21.75 mi14:07:533:11:358:496:39
8:53
-1:31
23M
23.00 mi14:20:233:24:058:5212:30
9:59
+1:06
24M
24.00 mi14:30:093:33:518:559:46
9:46
-0:13
40K
24.85 mi14:38:553:42:378:578:46
10:15
+0:29
25.2M
25.20 mi14:42:423:46:248:593:47
10:58
+0:43
Finish
26.22 mi14:53:103:56:529:0210:28
10:16
-0:42

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

8:24 /mi

Average Pace

9:02 /mi

Slowest Pace

10:58 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:51:38

47% of race

Time at Steady Pace

1:09:33

29% of race

Time at Slower Pace

55:41

24% of race

Average Pace: 9:02 /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 mi11:23:1026:528:3926:52
8:39
#18558
10K
6.21 mi11:49:1652:588:3126:06
8:24
#18061
15K
9.32 mi12:15:331:19:158:3026:17
8:28
#17876
20K
12.43 mi12:42:091:45:518:3126:36
8:34
#17681
Half
13.11 mi12:47:561:51:388:315:47
8:29
#17667
25K
15.53 mi13:09:212:13:038:3421:25
8:50
#17719
30K
18.64 mi13:38:032:41:458:4128:42
9:14
#17830
20M
20.00 mi13:50:502:54:328:4412:47
9:24
#17890
21M
21.00 mi14:01:143:04:568:4810:24
10:24
#18003
35K
21.75 mi14:07:533:11:358:496:39
8:53
#18000
23M
23.00 mi14:20:233:24:058:5212:30
9:59
#18169
24M
24.00 mi14:30:093:33:518:559:46
9:46
#18297
40K
24.85 mi14:38:553:42:378:578:46
10:15
#18432
25.2M
25.20 mi14:42:423:46:248:593:47
10:58
#18483
Finish
26.22 mi14:53:103:56:529:0210:28
10:16
#18748
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi185586909690917555(Top 66%)6247(Top 55%)6247(Top 518%)
10K6.21 mi3.10 mi18061+4976572+3376572+33717601(Top 66%)6245(Top 55%)6245(Top 517%)
15K9.32 mi3.11 mi17876+1856452+1206452+12017555(Top 66%)6247(Top 55%)6247(Top 518%)
20K12.43 mi3.11 mi17681+1956333+1196333+11917263(Top 65%)6086(Top 53%)6086(Top 504%)
Half13.11 mi0.68 mi17667+146325+86325+817642(Top 66%)6279(Top 55%)6279(Top 520%)
25K15.53 mi2.42 mi17719-526366-416366-4118150(Top 68%)6635(Top 58%)6635(Top 550%)
30K18.64 mi3.11 mi17830-1116457-916457-9118353(Top 69%)6843(Top 60%)6843(Top 567%)
20M20.00 mi1.36 mi17890-606519-626519-6218495(Top 69%)7025(Top 61%)7025(Top 582%)
21M21.00 mi1.00 mi18003-1136594-756594-7519279(Top 72%)7503(Top 66%)7503(Top 622%)
35K21.75 mi0.75 mi18000+36598-46598-417429(Top 65%)6522(Top 57%)6522(Top 540%)
23M23.00 mi1.25 mi18169-1696710-1126710-11219948(Top 75%)7923(Top 69%)7923(Top 656%)
24M24.00 mi1.00 mi18297-1286800-906800-9020115(Top 76%)8033(Top 70%)8033(Top 666%)
40K24.85 mi0.85 mi18432-1356883-836883-8320623(Top 77%)8395(Top 73%)8395(Top 696%)
25.2M25.20 mi0.35 mi18483-516915-326915-3220405(Top 77%)8262(Top 72%)8262(Top 685%)
Finish26.22 mi1.02 mi18748-2657077-1627077-16222466(Top 84%)9361(Top 82%)9361(Top 776%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 66%
×21story building
+97ft-345ft

Overall

17555

Females

6247

F50-54

6247

5K→10K

3.1 - 6.2 mi

Top 66%
×5story building
+79ft-138ft

Overall

17601

Females

6245

F50-54

6245

10K→15K

6.2 - 9.3 mi

Top 66%
×3story building
+67ft-78ft

Overall

17555

Females

6247

F50-54

6247

15K→20K

9.3 - 12.4 mi

Top 65%
×5story building
+106ft-86ft

Overall

17263

Females

6086

F50-54

6086

20K→Half

12.4 - 13.1 mi

Top 66%
×2story building
+19ft-37ft

Overall

17642

Females

6279

F50-54

6279

Half→25K

13.1 - 15.5 mi

Top 68%
×4story building
+66ft-88ft

Overall

18150

Females

6635

F50-54

6635

25K→30K

15.5 - 18.6 mi

Top 69%
×9story building
+181ft-148ft

Overall

18353

Females

6843

F50-54

6843

30K→20M

18.6 - 20.0 mi

Top 69%
×5story building
+64ft-50ft

Overall

18495

Females

7025

F50-54

7025

20M→21M

20.0 - 21.0 mi

Top 72%
×8story building
+106ft-24ft

Overall

19279

Females

7503

F50-54

7503

21M→35K

21.0 - 21.8 mi

Top 65%
×7story building
+17ft-86ft

Overall

17429

Females

6522

F50-54

6522

35K→23M

21.8 - 23.0 mi

Top 75%
×5story building
+23ft-63ft

Overall

19948

Females

7923

F50-54

7923

23M→24M

23.0 - 24.0 mi

Top 76%
×6story building
+12ft-82ft

Overall

20115

Females

8033

F50-54

8033

24M→40K

24.0 - 24.9 mi

Top 77%
×1story
+6ft-20ft

Overall

20623

Females

8395

F50-54

8395

40K→25.2M

24.9 - 25.2 mi

Top 77%
×1story
+13ft-16ft

Overall

20405

Females

8262

F50-54

8262

25.2M→Finish

25.2 - 26.2 mi

Top 84%
×2story building
+22ft-21ft

Overall

22466

Females

9361

F50-54

9361

Passing Analysis

Category:
Athletes Passed
1782
Passed By
1972
Net Change
-190
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18558
5K → 10K661164+497#18558#18061
10K → 15K295110+185#18061#17876
15K → 20K27681+195#17876#17681
20K → Half3723+14#17681#17667
Half → 25K100152-52#17667#17719
25K → 30K144255-111#17719#17830
30K → 20M76136-60#17830#17890
20M → 21M50163-113#17890#18003
21M → 35K4744+3#18003#18000
35K → 23M34203-169#18000#18169
23M → 24M24152-128#18169#18297
24M → 40K21156-135#18297#18432
40K → 25.2M960-51#18432#18483
25.2M → Finish8273-265#18483#18748
TOTALS17821972-190
📊

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