Boston Marathon logo
BOSTON MARATHON 2023

Sandy O'Keefe

Bib: 20039•F

SC

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F40-44)
#0 / 1878
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
8:24/mi
26:07
↑ 97↓ 3451.5%
10K· 6.21 mi
8:47/mi
53:25
↑ 79↓ 1380.4%
15K· 9.32 mi
8:26/mi
1:19:37
↑ 67↓ 78
20K· 12.43 mi
8:43/mi
1:46:42
↑ 106↓ 860.1%
Half· 13.11 mi
8:40/mi
1:52:37
↑ 19↓ 370.5%
25K· 15.53 mi
8:47/mi
2:13:55
↑ 66↓ 880.2%
30K· 18.64 mi
9:25/mi
2:43:10
↑ 181↓ 1480.2%
20M
9:25/mi
2:55:58
↑ 64↓ 500.2%
21M
10:19/mi
3:06:17
↑ 106↓ 241.6%
35K· 21.75 mi
9:28/mi
3:13:22
↑ 17↓ 861.7%
23M
9:33/mi
3:25:20
↑ 23↓ 630.6%
24M
9:06/mi
3:34:26
↓ 821.3%
40K· 24.85 mi
9:49/mi
3:42:50
↓ 200.3%
25.2M
9:40/mi
3:46:10
↑ 13↓ 160.2%
Finish· 26.22 mi
8:46/mi
3:55:06
↑ 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
Time1:52:37
Pace8:35 /mi
2nd Half
Distance13.11 mi
Time2:02:29
Pace9:21 /mi
📊Positive Split: 8.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:18:2626:078:2426:07
8:24
-
10K
6.21 mi11:45:4453:258:3627:18
8:47
+0:23
15K
9.32 mi12:11:561:19:378:3326:12
8:26
-0:21
20K
12.43 mi12:39:011:46:428:3527:05
8:43
+0:17
Half
13.11 mi12:44:561:52:378:355:55
8:40
-0:03
25K
15.53 mi13:06:142:13:558:3721:18
8:47
+0:07
30K
18.64 mi13:35:292:43:108:4529:15
9:25
+0:38
20M
20.00 mi13:48:172:55:588:4812:48
9:25
0:00
21M
21.00 mi13:58:363:06:178:5210:19
10:19
+0:54
35K
21.75 mi14:05:413:13:228:537:05
9:28
-0:51
23M
23.00 mi14:17:393:25:208:5611:58
9:33
+0:05
24M
24.00 mi14:26:453:34:268:569:06
9:06
-0:27
40K
24.85 mi14:35:093:42:508:588:24
9:49
+0:43
25.2M
25.20 mi14:38:293:46:108:583:20
9:40
-0:09
Finish
26.22 mi14:47:253:55:068:588:56
8:46
-0:54

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

8:58 /mi

Slowest Pace

10:19 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:22:51

61% of race

Time at Steady Pace

9:06

4% of race

Time at Slower Pace

1:23:09

35% of race

Average Pace: 8:58 /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 mi11:18:2626:078:2426:07
8:24
#16946
10K
6.21 mi11:45:4453:258:3627:18
8:47
#18521
15K
9.32 mi12:11:561:19:378:3326:12
8:26
#18124
20K
12.43 mi12:39:011:46:428:3527:05
8:43
#18124
Half
13.11 mi12:44:561:52:378:355:55
8:40
#18150
25K
15.53 mi13:06:142:13:558:3721:18
8:47
#18079
30K
18.64 mi13:35:292:43:108:4529:15
9:25
#18297
20M
20.00 mi13:48:172:55:588:4812:48
9:25
#18332
21M
21.00 mi13:58:363:06:178:5210:19
10:19
#18377
35K
21.75 mi14:05:413:13:228:537:05
9:28
#18444
23M
23.00 mi14:17:393:25:208:5611:58
9:33
#18457
24M
24.00 mi14:26:453:34:268:569:06
9:06
#18418
40K
24.85 mi14:35:093:42:508:588:24
9:49
#18479
25.2M
25.20 mi14:38:293:46:108:583:20
9:40
#18438
Finish
26.22 mi14:47:253:55:068:588:56
8:46
#18394
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi169465896589617373(Top 65%)6145(Top 54%)6145(Top 327%)
10K6.21 mi3.10 mi18521-15756842-9466842-94619867(Top 75%)7619(Top 67%)7619(Top 406%)
15K9.32 mi3.11 mi18124+3976599+2436599+24317373(Top 65%)6145(Top 54%)6145(Top 327%)
20K12.43 mi3.11 mi181246586+136586+1318235(Top 68%)6635(Top 58%)6635(Top 353%)
Half13.11 mi0.68 mi18150-266601-156601-1518819(Top 71%)6976(Top 61%)6976(Top 371%)
25K15.53 mi2.42 mi18079+716578+236578+2317891(Top 67%)6513(Top 57%)6513(Top 347%)
30K18.64 mi3.11 mi18297-2186739-1616739-16119109(Top 72%)7254(Top 64%)7254(Top 386%)
20M20.00 mi1.36 mi18332-356778-396778-3918551(Top 70%)7053(Top 62%)7053(Top 376%)
21M21.00 mi1.00 mi18377-456816-386816-3819073(Top 72%)7378(Top 65%)7378(Top 393%)
35K21.75 mi0.75 mi18444-676856-406856-4019752(Top 74%)7780(Top 68%)7780(Top 414%)
23M23.00 mi1.25 mi18457-136876-206876-2018560(Top 70%)7159(Top 63%)7159(Top 381%)
24M24.00 mi1.00 mi18418+396866+106866+1017687(Top 66%)6738(Top 59%)6738(Top 359%)
40K24.85 mi0.85 mi18479-616907-416907-4119471(Top 73%)7752(Top 68%)7752(Top 413%)
25.2M25.20 mi0.35 mi18438+416890+176890+1716040(Top 60%)5904(Top 52%)5904(Top 314%)
Finish26.22 mi1.02 mi18394+446880+106880+1016882(Top 63%)6314(Top 55%)6314(Top 336%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 65%
×21story building
+97ft-345ft

Overall

17373

Females

6145

F40-44

6145

5K→10K

3.1 - 6.2 mi

Top 75%
×5story building
+79ft-138ft

Overall

19867

Females

7619

F40-44

7619

10K→15K

6.2 - 9.3 mi

Top 65%
×3story building
+67ft-78ft

Overall

17373

Females

6145

F40-44

6145

15K→20K

9.3 - 12.4 mi

Top 68%
×5story building
+106ft-86ft

Overall

18235

Females

6635

F40-44

6635

20K→Half

12.4 - 13.1 mi

Top 71%
×2story building
+19ft-37ft

Overall

18819

Females

6976

F40-44

6976

Half→25K

13.1 - 15.5 mi

Top 67%
×4story building
+66ft-88ft

Overall

17891

Females

6513

F40-44

6513

25K→30K

15.5 - 18.6 mi

Top 72%
×9story building
+181ft-148ft

Overall

19109

Females

7254

F40-44

7254

30K→20M

18.6 - 20.0 mi

Top 70%
×5story building
+64ft-50ft

Overall

18551

Females

7053

F40-44

7053

20M→21M

20.0 - 21.0 mi

Top 72%
×8story building
+106ft-24ft

Overall

19073

Females

7378

F40-44

7378

21M→35K

21.0 - 21.8 mi

Top 74%
×7story building
+17ft-86ft

Overall

19752

Females

7780

F40-44

7780

35K→23M

21.8 - 23.0 mi

Top 70%
×5story building
+23ft-63ft

Overall

18560

Females

7159

F40-44

7159

23M→24M

23.0 - 24.0 mi

Top 66%
×6story building
+12ft-82ft

Overall

17687

Females

6738

F40-44

6738

24M→40K

24.0 - 24.9 mi

Top 73%
×1story
+6ft-20ft

Overall

19471

Females

7752

F40-44

7752

40K→25.2M

24.9 - 25.2 mi

Top 60%
×1story
+13ft-16ft

Overall

16040

Females

5904

F40-44

5904

25.2M→Finish

25.2 - 26.2 mi

Top 63%
×2story building
+22ft-21ft

Overall

16882

Females

6314

F40-44

6314

Passing Analysis

Category:
Athletes Passed
1404
Passed By
2852
Net Change
-1448
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16946
5K → 10K301605-1575#16946#18521
10K → 15K44144+397#18521#18124
15K → 20K1651650#18124#18124
20K → Half1642-26#18124#18150
Half → 25K16291+71#18150#18079
25K → 30K115333-218#18079#18297
30K → 20M82117-35#18297#18332
20M → 21M67112-45#18332#18377
21M → 35K2996-67#18377#18444
35K → 23M7487-13#18444#18457
23M → 24M7334+39#18457#18418
24M → 40K3394-61#18418#18479
40K → 25.2M487+41#18479#18438
25.2M → Finish6925+44#18438#18394
TOTALS14042852-1448
📊

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