Boston Marathon logo
BOSTON MARATHON 2023

Sophie Bestwick

Bib: 16331•F

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Gender (Female)
#0 / 11423
Division (F18-39)
#0 / 4884
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:03
Rank: #11868
Start → 5K
24:03 | 7:44/mi
10K· 6.21 mi
48:15
Rank: #12422 (-554)
5K → 10K
24:12 | 7:47/mi
15K· 9.32 mi
1:13:12
Rank: #13173 (-751)
10K → 15K
24:57 | 8:02/mi
20K· 12.43 mi
1:38:55
Rank: #13786 (-613)
15K → 20K
25:43 | 8:17/mi
Half· 13.11 mi
1:44:38
Rank: #13965 (-179)
20K → Half
5:43 | 8:23/mi
25K· 15.53 mi
2:05:55
Rank: #14687 (-722)
Half → 25K
21:17 | 8:47/mi
30K· 18.64 mi
2:36:58
Rank: #16296 (-1609)
25K → 30K
31:03 | 10:00/mi
20M
2:52:13
Rank: #17206 (-910)
30K → 20M
15:15 | 11:13/mi
21M
3:03:58
Rank: #17742 (-536)
20M → 21M
11:45 | 11:45/mi
35K· 21.75 mi
3:11:13
Rank: #17895 (-153)
21M → 35K
7:15 | 9:41/mi
23M
3:24:25
Rank: #18246 (-351)
35K → 23M
13:12 | 10:33/mi
24M
3:34:07
Rank: #18358 (-112)
23M → 24M
9:42 | 9:42/mi
40K· 24.85 mi
3:43:20
Rank: #18582 (-224)
24M → 40K
9:13 | 10:47/mi
25.2M
3:47:29
Rank: #18716 (-134)
40K → 25.2M
4:09 | 12:02/mi
Finish· 26.22 mi
3:58:00
Rank: #18950 (-234)
25.2M → Finish
10:31 | 10:19/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
Time1:44:38
Pace7:59 /mi
2nd Half
Distance13.11 mi
Time2:13:22
Pace10:10 /mi
📊Positive Split: 27.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:14:2624:037:4424:03
7:44
-
10K
6.21 mi11:38:3848:157:4624:12
7:47
+0:03
15K
9.32 mi12:03:351:13:127:5124:57
8:02
+0:15
20K
12.43 mi12:29:181:38:557:5825:43
8:17
+0:15
Half
13.11 mi12:35:011:44:387:595:43
8:23
+0:06
25K
15.53 mi12:56:182:05:558:0621:17
8:47
+0:24
30K
18.64 mi13:27:212:36:588:2531:03
10:00
+1:13
20M
20.00 mi13:42:362:52:138:3715:15
11:13
+1:13
21M
21.00 mi13:54:213:03:588:4611:45
11:45
+0:32
35K
21.75 mi14:01:363:11:138:487:15
9:41
-2:04
23M
23.00 mi14:14:483:24:258:5313:12
10:33
+0:52
24M
24.00 mi14:24:303:34:078:559:42
9:42
-0:51
40K
24.85 mi14:33:433:43:208:599:13
10:47
+1:05
25.2M
25.20 mi14:37:523:47:299:024:09
12:02
+1:15
Finish
26.22 mi14:48:233:58:009:0510:31
10:19
-1:43

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

7:44 /mi

Average Pace

9:05 /mi

Slowest Pace

12:02 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:05:55

53% of race

Time at Steady Pace

58:31

25% of race

Time at Slower Pace

53:34

23% of race

Average Pace: 9:05 /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 mi11:14:2624:037:4424:03
7:44
#11868
10K
6.21 mi11:38:3848:157:4624:12
7:47
#12422
15K
9.32 mi12:03:351:13:127:5124:57
8:02
#13173
20K
12.43 mi12:29:181:38:557:5825:43
8:17
#13786
Half
13.11 mi12:35:011:44:387:595:43
8:23
#13965
25K
15.53 mi12:56:182:05:558:0621:17
8:47
#14687
30K
18.64 mi13:27:212:36:588:2531:03
10:00
#16296
20M
20.00 mi13:42:362:52:138:3715:15
11:13
#17206
21M
21.00 mi13:54:213:03:588:4611:45
11:45
#17742
35K
21.75 mi14:01:363:11:138:487:15
9:41
#17895
23M
23.00 mi14:14:483:24:258:5313:12
10:33
#18246
24M
24.00 mi14:24:303:34:078:559:42
9:42
#18358
40K
24.85 mi14:33:433:43:208:599:13
10:47
#18582
25.2M
25.20 mi14:37:523:47:299:024:09
12:02
#18716
Finish
26.22 mi14:48:233:58:009:0510:31
10:19
#18950
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi118682792279214670(Top 55%)4494(Top 39%)4494(Top 92%)
10K6.21 mi3.10 mi12422-5543118-3263118-32613049(Top 49%)3460(Top 30%)3460(Top 71%)
15K9.32 mi3.11 mi13173-7513567-4493567-44914670(Top 55%)4494(Top 39%)4494(Top 92%)
20K12.43 mi3.11 mi13786-6133957-3903957-39015486(Top 58%)5025(Top 44%)5025(Top 103%)
Half13.11 mi0.68 mi13965-1794066-1094066-10917085(Top 64%)5964(Top 52%)5964(Top 122%)
25K15.53 mi2.42 mi14687-7224518-4524518-45217851(Top 67%)6495(Top 57%)6495(Top 133%)
30K18.64 mi3.11 mi16296-16095566-10485566-104821016(Top 79%)8352(Top 73%)8352(Top 171%)
20M20.00 mi1.36 mi17206-9106102-5366102-53623050(Top 87%)9539(Top 84%)9539(Top 195%)
21M21.00 mi1.00 mi17742-5366435-3336435-33322325(Top 84%)9176(Top 80%)9176(Top 188%)
35K21.75 mi0.75 mi17895-1536536-1016536-10120453(Top 77%)8195(Top 72%)8195(Top 168%)
23M23.00 mi1.25 mi18246-3516754-2186754-21821427(Top 80%)8749(Top 77%)8749(Top 179%)
24M24.00 mi1.00 mi18358-1126831-776831-7719901(Top 75%)7913(Top 69%)7913(Top 162%)
40K24.85 mi0.85 mi18582-2246971-1406971-14021899(Top 82%)9093(Top 80%)9093(Top 186%)
25.2M25.20 mi0.35 mi18716-1347057-867057-8622565(Top 85%)9425(Top 83%)9425(Top 193%)
Finish26.22 mi1.02 mi18950-2347184-1277184-12722605(Top 85%)9442(Top 83%)9442(Top 193%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 55%
×21stories
+97ft-345ft

Overall

14670

Females

4494

F18-39

4494

5K→10K

3.1 - 6.2 mi

Top 49%
×5stories
+79ft-138ft

Overall

13049

Females

3460

F18-39

3460

10K→15K

6.2 - 9.3 mi

Top 55%
×3stories
+67ft-78ft

Overall

14670

Females

4494

F18-39

4494

15K→20K

9.3 - 12.4 mi

Top 58%
×5stories
+106ft-86ft

Overall

15486

Females

5025

F18-39

5025

20K→Half

12.4 - 13.1 mi

Top 64%
×2stories
+19ft-37ft

Overall

17085

Females

5964

F18-39

5964

Half→25K

13.1 - 15.5 mi

Top 67%
×4stories
+66ft-88ft

Overall

17851

Females

6495

F18-39

6495

25K→30K

15.5 - 18.6 mi

Top 79%
×9stories
+181ft-148ft

Overall

21016

Females

8352

F18-39

8352

30K→20M

18.6 - 20.0 mi

Top 87%
×5stories
+64ft-50ft

Overall

23050

Females

9539

F18-39

9539

20M→21M

20.0 - 21.0 mi

Top 84%
×8stories
+106ft-24ft

Overall

22325

Females

9176

F18-39

9176

21M→35K

21.0 - 21.8 mi

Top 77%
×7stories
+17ft-86ft

Overall

20453

Females

8195

F18-39

8195

35K→23M

21.8 - 23.0 mi

Top 80%
×5stories
+23ft-63ft

Overall

21427

Females

8749

F18-39

8749

23M→24M

23.0 - 24.0 mi

Top 75%
×6stories
+12ft-82ft

Overall

19901

Females

7913

F18-39

7913

24M→40K

24.0 - 24.9 mi

Top 82%
×1story
+6ft-20ft

Overall

21899

Females

9093

F18-39

9093

40K→25.2M

24.9 - 25.2 mi

Top 85%
×1story
+13ft-16ft

Overall

22565

Females

9425

F18-39

9425

25.2M→Finish

25.2 - 26.2 mi

Top 85%
×2stories
+22ft-21ft

Overall

22605

Females

9442

F18-39

9442

Passing Analysis

Category:
Athletes Passed
375
Passed By
7457
Net Change
-7082
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11868
5K → 10K123677-554#11868#12422
10K → 15K39790-751#12422#13173
15K → 20K60673-613#13173#13786
20K → Half5184-179#13786#13965
Half → 25K28750-722#13965#14687
25K → 30K91618-1609#14687#16296
30K → 20M7917-910#16296#17206
20M → 21M8544-536#17206#17742
21M → 35K23176-153#17742#17895
35K → 23M21372-351#17895#18246
23M → 24M24136-112#18246#18358
24M → 40K16240-224#18358#18582
40K → 25.2M7141-134#18582#18716
25.2M → Finish5239-234#18716#18950
TOTALS3757457-7082
📊

Passing Visuals

Category:

📈Position Graph

Loading...

🎨Heatmap Timeline

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