Boston Marathon logo
BOSTON MARATHON 2023

Sharon Foster

Bib: 22705•F

MA

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F55-59)
#0 / 815
Top 30%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
26:50
Rank: #18474
Start → 5K
26:50 | 8:38/mi
10K· 6.21 mi
53:47
Rank: #18838 (-364)
5K → 10K
26:57 | 8:40/mi
15K· 9.32 mi
1:20:59
Rank: #18983 (-145)
10K → 15K
27:12 | 8:45/mi
20K· 12.43 mi
1:48:21
Rank: #18895 (+88)
15K → 20K
27:22 | 8:49/mi
Half· 13.11 mi
1:54:12
Rank: #18856 (+39)
20K → Half
5:51 | 8:34/mi
25K· 15.53 mi
2:15:39
Rank: #18757 (+99)
Half → 25K
21:27 | 8:51/mi
30K· 18.64 mi
2:43:57
Rank: #18551 (+206)
25K → 30K
28:18 | 9:07/mi
20M
2:56:13
Rank: #18403 (+148)
30K → 20M
12:16 | 9:02/mi
21M
3:05:46
Rank: #18262 (+141)
20M → 21M
9:33 | 9:33/mi
35K· 21.75 mi
3:12:18
Rank: #18185 (+77)
21M → 35K
6:32 | 8:44/mi
23M
3:23:43
Rank: #18088 (+97)
35K → 23M
11:25 | 9:07/mi
24M
3:32:43
Rank: #18052 (+36)
23M → 24M
9:00 | 9:00/mi
40K· 24.85 mi
3:40:34
Rank: #18024 (+28)
24M → 40K
7:51 | 9:11/mi
25.2M
3:43:58
Rank: #18005 (+19)
40K → 25.2M
3:24 | 9:52/mi
Finish· 26.22 mi
3:52:47
Rank: #17935 (+70)
25.2M → Finish
8:49 | 8:39/mi

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
Time1:54:12
Pace8:43 /mi
2nd Half
Distance13.11 mi
Time1:58:35
Pace9:03 /mi
📊Positive Split: 3.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:21:0226:508:3826:50
8:38
-
10K
6.21 mi11:47:5953:478:3926:57
8:40
+0:02
15K
9.32 mi12:15:111:20:598:4127:12
8:45
+0:05
20K
12.43 mi12:42:331:48:218:4327:22
8:49
+0:04
Half
13.11 mi12:48:241:54:128:435:51
8:34
-0:15
25K
15.53 mi13:09:512:15:398:4421:27
8:51
+0:17
30K
18.64 mi13:38:092:43:578:4828:18
9:07
+0:16
20M
20.00 mi13:50:252:56:138:4912:16
9:02
-0:05
21M
21.00 mi13:59:583:05:468:519:33
9:33
+0:31
35K
21.75 mi14:06:303:12:188:516:32
8:44
-0:49
23M
23.00 mi14:17:553:23:438:5111:25
9:07
+0:23
24M
24.00 mi14:26:553:32:438:529:00
9:00
-0:07
40K
24.85 mi14:34:463:40:348:527:51
9:11
+0:11
25.2M
25.20 mi14:38:103:43:588:533:24
9:52
+0:41
Finish
26.22 mi14:46:593:52:478:538:49
8:39
-1:13

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

8:34 /mi

Average Pace

8:53 /mi

Slowest Pace

9:52 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:39:50

94% of race

Time at Steady Pace

12:57

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:53 /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 mi11:21:0226:508:3826:50
8:38
#18474
10K
6.21 mi11:47:5953:478:3926:57
8:40
#18838
15K
9.32 mi12:15:111:20:598:4127:12
8:45
#18983
20K
12.43 mi12:42:331:48:218:4327:22
8:49
#18895
Half
13.11 mi12:48:241:54:128:435:51
8:34
#18856
25K
15.53 mi13:09:512:15:398:4421:27
8:51
#18757
30K
18.64 mi13:38:092:43:578:4828:18
9:07
#18551
20M
20.00 mi13:50:252:56:138:4912:16
9:02
#18403
21M
21.00 mi13:59:583:05:468:519:33
9:33
#18262
35K
21.75 mi14:06:303:12:188:516:32
8:44
#18185
23M
23.00 mi14:17:553:23:438:5111:25
9:07
#18088
24M
24.00 mi14:26:553:32:438:529:00
9:00
#18052
40K
24.85 mi14:34:463:40:348:527:51
9:11
#18024
25.2M
25.20 mi14:38:103:43:588:533:24
9:52
#18005
Finish
26.22 mi14:46:593:52:478:538:49
8:39
#17935
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF55-59Seg. OverallSeg. FemalesSeg. F55-59
5K3.11 mi3.11 mi184746855685519269(Top 72%)7251(Top 63%)7251(Top 890%)
10K6.21 mi3.10 mi18838-3647035-1807035-18019283(Top 72%)7254(Top 64%)7254(Top 890%)
15K9.32 mi3.11 mi18983-1457122-877122-8719269(Top 72%)7251(Top 63%)7251(Top 890%)
20K12.43 mi3.11 mi18895+887060+627060+6218739(Top 70%)6930(Top 61%)6930(Top 850%)
Half13.11 mi0.68 mi18856+397037+237037+2318223(Top 68%)6618(Top 58%)6618(Top 812%)
25K15.53 mi2.42 mi18757+996985+526985+5218216(Top 68%)6676(Top 58%)6676(Top 819%)
30K18.64 mi3.11 mi18551+2066898+876898+8717746(Top 67%)6492(Top 57%)6492(Top 797%)
20M20.00 mi1.36 mi18403+1486813+856813+8516718(Top 63%)5991(Top 52%)5991(Top 735%)
21M21.00 mi1.00 mi18262+1416757+566757+5616237(Top 61%)5765(Top 50%)5765(Top 707%)
35K21.75 mi0.75 mi18185+776714+436714+4316629(Top 62%)6069(Top 53%)6069(Top 745%)
23M23.00 mi1.25 mi18088+976666+486666+4816658(Top 63%)6121(Top 54%)6121(Top 751%)
24M24.00 mi1.00 mi18052+366662+46662+417259(Top 65%)6497(Top 57%)6497(Top 797%)
40K24.85 mi0.85 mi18024+286655+76655+717050(Top 64%)6435(Top 56%)6435(Top 790%)
25.2M25.20 mi0.35 mi18005+196646+96646+916865(Top 63%)6356(Top 56%)6356(Top 780%)
Finish26.22 mi1.02 mi17935+706615+316615+3116283(Top 61%)5990(Top 52%)5990(Top 735%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 72%
×21stories
+97ft-345ft

Overall

19269

Females

7251

F55-59

7251

5K→10K

3.1 - 6.2 mi

Top 72%
×5stories
+79ft-138ft

Overall

19283

Females

7254

F55-59

7254

10K→15K

6.2 - 9.3 mi

Top 72%
×3stories
+67ft-78ft

Overall

19269

Females

7251

F55-59

7251

15K→20K

9.3 - 12.4 mi

Top 70%
×5stories
+106ft-86ft

Overall

18739

Females

6930

F55-59

6930

20K→Half

12.4 - 13.1 mi

Top 68%
×2stories
+19ft-37ft

Overall

18223

Females

6618

F55-59

6618

Half→25K

13.1 - 15.5 mi

Top 68%
×4stories
+66ft-88ft

Overall

18216

Females

6676

F55-59

6676

25K→30K

15.5 - 18.6 mi

Top 67%
×9stories
+181ft-148ft

Overall

17746

Females

6492

F55-59

6492

30K→20M

18.6 - 20.0 mi

Top 63%
×5stories
+64ft-50ft

Overall

16718

Females

5991

F55-59

5991

20M→21M

20.0 - 21.0 mi

Top 61%
×8stories
+106ft-24ft

Overall

16237

Females

5765

F55-59

5765

21M→35K

21.0 - 21.8 mi

Top 62%
×7stories
+17ft-86ft

Overall

16629

Females

6069

F55-59

6069

35K→23M

21.8 - 23.0 mi

Top 63%
×5stories
+23ft-63ft

Overall

16658

Females

6121

F55-59

6121

23M→24M

23.0 - 24.0 mi

Top 65%
×6stories
+12ft-82ft

Overall

17259

Females

6497

F55-59

6497

24M→40K

24.0 - 24.9 mi

Top 64%
×1story
+6ft-20ft

Overall

17050

Females

6435

F55-59

6435

40K→25.2M

24.9 - 25.2 mi

Top 63%
×1story
+13ft-16ft

Overall

16865

Females

6356

F55-59

6356

25.2M→Finish

25.2 - 26.2 mi

Top 61%
×2stories
+22ft-21ft

Overall

16283

Females

5990

F55-59

5990

Passing Analysis

Category:
Athletes Passed
1817
Passed By
1278
Net Change
+539
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18474
5K → 10K184548-364#18474#18838
10K → 15K123268-145#18838#18983
15K → 20K198110+88#18983#18895
20K → Half5516+39#18895#18856
Half → 25K15657+99#18856#18757
25K → 30K28175+206#18757#18551
30K → 20M17224+148#18551#18403
20M → 21M17029+141#18403#18262
21M → 35K9720+77#18262#18185
35K → 23M11922+97#18185#18088
23M → 24M7539+36#18088#18052
24M → 40K5830+28#18052#18024
40K → 25.2M3415+19#18024#18005
25.2M → Finish9525+70#18005#17935
TOTALS18171278+539
📊

Passing Visuals

Category:
Loading...

🔥Passing Intensity

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
Share Feedback

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing