Boston Marathon logo
BOSTON MARATHON 2023

Anastasia Robinson

Bib: 21764•F

PA

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 39%
Masters (Masters Women)
#0 / 6539
Top 26%
Division (F45-49)
#0 / 1817
Top 28%
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
7:47/mi
24:12
↑ 97↓ 3451.5%
10K· 6.21 mi
7:51/mi
48:34
↑ 79↓ 1380.4%
15K· 9.32 mi
7:54/mi
1:13:08
↑ 67↓ 78
20K· 12.43 mi
8:09/mi
1:38:28
↑ 106↓ 860.1%
Half· 13.11 mi
8:10/mi
1:44:02
↑ 19↓ 370.5%
25K· 15.53 mi
8:22/mi
2:04:19
↑ 66↓ 880.2%
30K· 18.64 mi
8:36/mi
2:31:03
↑ 181↓ 1480.2%
20M
8:37/mi
2:42:46
↑ 64↓ 500.2%
21M
9:09/mi
2:51:55
↑ 106↓ 241.6%
35K· 21.75 mi
8:21/mi
2:58:10
↑ 17↓ 861.7%
23M
8:46/mi
3:09:08
↑ 23↓ 630.6%
24M
8:36/mi
3:17:44
↓ 821.3%
40K· 24.85 mi
8:46/mi
3:25:14
↓ 200.3%
25.2M
8:44/mi
3:28:15
↑ 13↓ 160.2%
Finish· 26.22 mi
8:44/mi
3:37:09
↑ 22↓ 21

The Course

Is this your race?

Claim it — unlock a deeper AI report on this race, free

A personalized Race Performance Report that goes beyond this page — emailed to you, built from your real splits.

Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:44:02
Pace7:56 /mi
2nd Half
Distance13.11 mi
Time1:53:07
Pace8:38 /mi
📊Positive Split: 8.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:16:5424:127:4724:12
7:47
-
10K
6.21 mi11:41:1648:347:4924:22
7:51
+0:04
15K
9.32 mi12:05:501:13:087:5124:34
7:54
+0:03
20K
12.43 mi12:31:101:38:287:5525:20
8:09
+0:15
Half
13.11 mi12:36:441:44:027:565:34
8:10
+0:01
25K
15.53 mi12:57:012:04:198:0020:17
8:22
+0:12
30K
18.64 mi13:23:452:31:038:0626:44
8:36
+0:14
20M
20.00 mi13:35:282:42:468:0811:43
8:37
+0:01
21M
21.00 mi13:44:372:51:558:119:09
9:09
+0:32
35K
21.75 mi13:50:522:58:108:126:15
8:21
-0:48
23M
23.00 mi14:01:503:09:088:1310:58
8:46
+0:25
24M
24.00 mi14:10:263:17:448:148:36
8:36
-0:10
40K
24.85 mi14:17:563:25:148:157:30
8:46
+0:10
25.2M
25.20 mi14:20:573:28:158:163:01
8:44
-0:02
Finish
26.22 mi14:29:513:37:098:178:54
8:44
0:00

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

7:47 /mi

Average Pace

8:17 /mi

Slowest Pace

9:09 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:10:34

60% of race

Time at Steady Pace

1:26:35

40% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:17 /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 mi11:16:5424:127:4724:12
7:47
#12275
10K
6.21 mi11:41:1648:347:4924:22
7:51
#12867
15K
9.32 mi12:05:501:13:087:5124:34
7:54
#13106
20K
12.43 mi12:31:101:38:287:5525:20
8:09
#13499
Half
13.11 mi12:36:441:44:027:565:34
8:10
#13603
25K
15.53 mi12:57:012:04:198:0020:17
8:22
#13899
30K
18.64 mi13:23:452:31:038:0626:44
8:36
#14132
20M
20.00 mi13:35:282:42:468:0811:43
8:37
#14148
21M
21.00 mi13:44:372:51:558:119:09
9:09
#14115
35K
21.75 mi13:50:522:58:108:126:15
8:21
#14108
23M
23.00 mi14:01:503:09:088:1310:58
8:46
#14125
24M
24.00 mi14:10:263:17:448:148:36
8:36
#14161
40K
24.85 mi14:17:563:25:148:157:30
8:46
#14193
25.2M
25.20 mi14:20:573:28:158:163:01
8:44
#14117
Finish
26.22 mi14:29:513:37:098:178:54
8:44
#14233
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi122753026302613645(Top 51%)3869(Top 34%)3869(Top 213%)
10K6.21 mi3.10 mi12867-5923359-3333359-33313512(Top 51%)3736(Top 33%)3736(Top 206%)
15K9.32 mi3.11 mi13106-2393529-1703529-17013645(Top 51%)3869(Top 34%)3869(Top 213%)
20K12.43 mi3.11 mi13499-3933782-2533782-25314640(Top 55%)4491(Top 39%)4491(Top 247%)
Half13.11 mi0.68 mi13603-1043846-643846-6415513(Top 58%)4985(Top 44%)4985(Top 274%)
25K15.53 mi2.42 mi13899-2964056-2104056-21015361(Top 58%)5050(Top 44%)5050(Top 278%)
30K18.64 mi3.11 mi14132-2334221-1654221-16514956(Top 56%)4898(Top 43%)4898(Top 270%)
20M20.00 mi1.36 mi14148-164259-384259-3814423(Top 54%)4657(Top 41%)4657(Top 256%)
21M21.00 mi1.00 mi14115+334262-34262-314232(Top 53%)4609(Top 40%)4609(Top 254%)
35K21.75 mi0.75 mi14108+74268-64268-614459(Top 54%)4811(Top 42%)4811(Top 265%)
23M23.00 mi1.25 mi14125-174301-334301-3314767(Top 55%)5043(Top 44%)5043(Top 278%)
24M24.00 mi1.00 mi14161-364347-464347-4615070(Top 57%)5265(Top 46%)5265(Top 290%)
40K24.85 mi0.85 mi14193-324389-424389-4214951(Top 56%)5266(Top 46%)5266(Top 290%)
25.2M25.20 mi0.35 mi14117+764356+334356+3310904(Top 41%)3175(Top 28%)3175(Top 175%)
Finish26.22 mi1.02 mi14233-1164447-914447-9116712(Top 63%)6224(Top 54%)6224(Top 343%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 51%
×21story building
+97ft-345ft

Overall

13645

Females

3869

F45-49

3869

5K→10K

3.1 - 6.2 mi

Top 51%
×5story building
+79ft-138ft

Overall

13512

Females

3736

F45-49

3736

10K→15K

6.2 - 9.3 mi

Top 51%
×3story building
+67ft-78ft

Overall

13645

Females

3869

F45-49

3869

15K→20K

9.3 - 12.4 mi

Top 55%
×5story building
+106ft-86ft

Overall

14640

Females

4491

F45-49

4491

20K→Half

12.4 - 13.1 mi

Top 58%
×2story building
+19ft-37ft

Overall

15513

Females

4985

F45-49

4985

Half→25K

13.1 - 15.5 mi

Top 58%
×4story building
+66ft-88ft

Overall

15361

Females

5050

F45-49

5050

25K→30K

15.5 - 18.6 mi

Top 56%
×9story building
+181ft-148ft

Overall

14956

Females

4898

F45-49

4898

30K→20M

18.6 - 20.0 mi

Top 54%
×5story building
+64ft-50ft

Overall

14423

Females

4657

F45-49

4657

20M→21M

20.0 - 21.0 mi

Top 53%
×8story building
+106ft-24ft

Overall

14232

Females

4609

F45-49

4609

21M→35K

21.0 - 21.8 mi

Top 54%
×7story building
+17ft-86ft

Overall

14459

Females

4811

F45-49

4811

35K→23M

21.8 - 23.0 mi

Top 55%
×5story building
+23ft-63ft

Overall

14767

Females

5043

F45-49

5043

23M→24M

23.0 - 24.0 mi

Top 57%
×6story building
+12ft-82ft

Overall

15070

Females

5265

F45-49

5265

24M→40K

24.0 - 24.9 mi

Top 56%
×1story
+6ft-20ft

Overall

14951

Females

5266

F45-49

5266

40K→25.2M

24.9 - 25.2 mi

Top 41%
×1story
+13ft-16ft

Overall

10904

Females

3175

F45-49

3175

25.2M→Finish

25.2 - 26.2 mi

Top 63%
×2story building
+22ft-21ft

Overall

16712

Females

6224

F45-49

6224

Passing Analysis

Category:
Athletes Passed
1053
Passed By
3011
Net Change
-1958
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12275
5K → 10K112704-592#12275#12867
10K → 15K124363-239#12867#13106
15K → 20K92485-393#13106#13499
20K → Half8112-104#13499#13603
Half → 25K65361-296#13603#13899
25K → 30K113346-233#13899#14132
30K → 20M84100-16#14132#14148
20M → 21M10572+33#14148#14115
21M → 35K5144+7#14115#14108
35K → 23M86103-17#14108#14125
23M → 24M5086-36#14125#14161
24M → 40K5688-32#14161#14193
40K → 25.2M793+76#14193#14117
25.2M → Finish28144-116#14117#14233
TOTALS10533011-1958
📊

Passing Visuals

Category:
Loading...

🔄Passing Circle

Loading...

🌊Position Flow

Loading...

🏃Race Lanes

Loading...

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export Track Data

Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

Questions or issues regarding timing data?

If you notice any discrepancies in your timing data or have questions about your results, our support team can help.

Contact Race Support

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing