Boston Marathon logo
BOSTON MARATHON 2023

Mary Dowling

Bib: 21441•F

MA

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 48%
Masters (Masters Women)
#0 / 6539
Top 37%
Division (F60-64)
#0 / 527
Top 9%
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
8:02/mi
24:59
↑ 97↓ 3451.5%
10K· 6.21 mi
8:05/mi
50:06
↑ 79↓ 1380.4%
15K· 9.32 mi
8:12/mi
1:15:36
↑ 67↓ 78
20K· 12.43 mi
8:38/mi
1:42:26
↑ 106↓ 860.1%
Half· 13.11 mi
8:26/mi
1:48:11
↑ 19↓ 370.5%
25K· 15.53 mi
8:35/mi
2:08:59
↑ 66↓ 880.2%
30K· 18.64 mi
8:50/mi
2:36:25
↑ 181↓ 1480.2%
20M
8:59/mi
2:48:38
↑ 64↓ 500.2%
21M
9:40/mi
2:58:18
↑ 106↓ 241.6%
35K· 21.75 mi
8:39/mi
3:04:46
↑ 17↓ 861.7%
23M
9:00/mi
3:16:02
↑ 23↓ 630.6%
24M
8:40/mi
3:24:42
↓ 821.3%
40K· 24.85 mi
8:51/mi
3:32:16
↓ 200.3%
25.2M
9:31/mi
3:35:33
↑ 13↓ 160.2%
Finish· 26.22 mi
8:39/mi
3:44:22
↑ 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
Time1:48:11
Pace8:15 /mi
2nd Half
Distance13.11 mi
Time1:56:11
Pace8:52 /mi
📊Positive Split: 7.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:17:4524:598:0224:59
8:02
-
10K
6.21 mi11:42:5250:068:0425:07
8:05
+0:03
15K
9.32 mi12:08:221:15:368:0725:30
8:12
+0:07
20K
12.43 mi12:35:121:42:268:1526:50
8:38
+0:26
Half
13.11 mi12:40:571:48:118:155:45
8:26
-0:12
25K
15.53 mi13:01:452:08:598:1820:48
8:35
+0:09
30K
18.64 mi13:29:112:36:258:2327:26
8:50
+0:15
20M
20.00 mi13:41:242:48:388:2612:13
8:59
+0:09
21M
21.00 mi13:51:042:58:188:299:40
9:40
+0:41
35K
21.75 mi13:57:323:04:468:306:28
8:39
-1:01
23M
23.00 mi14:08:483:16:028:3111:16
9:00
+0:21
24M
24.00 mi14:17:283:24:428:328:40
8:40
-0:20
40K
24.85 mi14:25:023:32:168:327:34
8:51
+0:11
25.2M
25.20 mi14:28:193:35:338:333:17
9:31
+0:40
Finish
26.22 mi14:37:083:44:228:348:49
8:39
-0:52

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

8:02 /mi

Average Pace

8:34 /mi

Slowest Pace

9:40 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:15:36

34% of race

Time at Steady Pace

1:52:20

50% of race

Time at Slower Pace

36:26

16% of race

Average Pace: 8:33 /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 mi11:17:4524:598:0224:59
8:02
#14323
10K
6.21 mi11:42:5250:068:0425:07
8:05
#14854
15K
9.32 mi12:08:221:15:368:0725:30
8:12
#15191
20K
12.43 mi12:35:121:42:268:1526:50
8:38
#15873
Half
13.11 mi12:40:571:48:118:155:45
8:26
#15933
25K
15.53 mi13:01:452:08:598:1820:48
8:35
#16056
30K
18.64 mi13:29:112:36:258:2327:26
8:50
#16090
20M
20.00 mi13:41:242:48:388:2612:13
8:59
#16112
21M
21.00 mi13:51:042:58:188:299:40
9:40
#16121
35K
21.75 mi13:57:323:04:468:306:28
8:39
#16113
23M
23.00 mi14:08:483:16:028:3111:16
9:00
#16105
24M
24.00 mi14:17:283:24:428:328:40
8:40
#16062
40K
24.85 mi14:25:023:32:168:327:34
8:51
#16022
25.2M
25.20 mi14:28:193:35:338:333:17
9:31
#16004
Finish
26.22 mi14:37:083:44:228:348:49
8:39
#16010
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF60-64Seg. OverallSeg. FemalesSeg. F60-64
5K3.11 mi3.11 mi143234224422415925(Top 60%)5251(Top 46%)5251(Top 996%)
10K6.21 mi3.10 mi14854-5314562-3384562-33815419(Top 58%)4920(Top 43%)4920(Top 934%)
15K9.32 mi3.11 mi15191-3374777-2154777-21515925(Top 60%)5251(Top 46%)5251(Top 996%)
20K12.43 mi3.11 mi15873-6825226-4495226-44917721(Top 67%)6351(Top 56%)6351(Top 1205%)
Half13.11 mi0.68 mi15933-605266-405266-4017316(Top 65%)6062(Top 53%)6062(Top 1150%)
25K15.53 mi2.42 mi16056-1235372-1065372-10616694(Top 63%)5828(Top 51%)5828(Top 1106%)
30K18.64 mi3.11 mi16090-345429-575429-5716247(Top 61%)5638(Top 49%)5638(Top 1070%)
20M20.00 mi1.36 mi16112-225461-325461-3216497(Top 62%)5862(Top 51%)5862(Top 1112%)
21M21.00 mi1.00 mi16121-95487-265487-2616721(Top 63%)6024(Top 53%)6024(Top 1143%)
35K21.75 mi0.75 mi16113+85504-175504-1716123(Top 61%)5762(Top 50%)5762(Top 1093%)
23M23.00 mi1.25 mi16105+85514-105514-1016080(Top 60%)5787(Top 51%)5787(Top 1098%)
24M24.00 mi1.00 mi16062+435502+125502+1215487(Top 58%)5527(Top 48%)5527(Top 1049%)
40K24.85 mi0.85 mi16022+405488+145488+1415383(Top 58%)5515(Top 48%)5515(Top 1046%)
25.2M25.20 mi0.35 mi16004+185482+65482+615337(Top 58%)5498(Top 48%)5498(Top 1043%)
Finish26.22 mi1.02 mi16010-65494-125494-1216274(Top 61%)5981(Top 52%)5981(Top 1135%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 60%
×21story building
+97ft-345ft

Overall

15925

Females

5251

F60-64

5251

5K→10K

3.1 - 6.2 mi

Top 58%
×5story building
+79ft-138ft

Overall

15419

Females

4920

F60-64

4920

10K→15K

6.2 - 9.3 mi

Top 60%
×3story building
+67ft-78ft

Overall

15925

Females

5251

F60-64

5251

15K→20K

9.3 - 12.4 mi

Top 67%
×5story building
+106ft-86ft

Overall

17721

Females

6351

F60-64

6351

20K→Half

12.4 - 13.1 mi

Top 65%
×2story building
+19ft-37ft

Overall

17316

Females

6062

F60-64

6062

Half→25K

13.1 - 15.5 mi

Top 63%
×4story building
+66ft-88ft

Overall

16694

Females

5828

F60-64

5828

25K→30K

15.5 - 18.6 mi

Top 61%
×9story building
+181ft-148ft

Overall

16247

Females

5638

F60-64

5638

30K→20M

18.6 - 20.0 mi

Top 62%
×5story building
+64ft-50ft

Overall

16497

Females

5862

F60-64

5862

20M→21M

20.0 - 21.0 mi

Top 63%
×8story building
+106ft-24ft

Overall

16721

Females

6024

F60-64

6024

21M→35K

21.0 - 21.8 mi

Top 61%
×7story building
+17ft-86ft

Overall

16123

Females

5762

F60-64

5762

35K→23M

21.8 - 23.0 mi

Top 60%
×5story building
+23ft-63ft

Overall

16080

Females

5787

F60-64

5787

23M→24M

23.0 - 24.0 mi

Top 58%
×6story building
+12ft-82ft

Overall

15487

Females

5527

F60-64

5527

24M→40K

24.0 - 24.9 mi

Top 58%
×1story
+6ft-20ft

Overall

15383

Females

5515

F60-64

5515

40K→25.2M

24.9 - 25.2 mi

Top 58%
×1story
+13ft-16ft

Overall

15337

Females

5498

F60-64

5498

25.2M→Finish

25.2 - 26.2 mi

Top 61%
×2story building
+22ft-21ft

Overall

16274

Females

5981

F60-64

5981

Passing Analysis

Category:
Athletes Passed
1071
Passed By
2758
Net Change
-1687
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14323
5K → 10K109640-531#14323#14854
10K → 15K80417-337#14854#15191
15K → 20K44726-682#15191#15873
20K → Half1575-60#15873#15933
Half → 25K105228-123#15933#16056
25K → 30K167201-34#16056#16090
30K → 20M78100-22#16090#16112
20M → 21M7685-9#16112#16121
21M → 35K5648+8#16121#16113
35K → 23M8880+8#16113#16105
23M → 24M8239+43#16105#16062
24M → 40K7636+40#16062#16022
40K → 25.2M3517+18#16022#16004
25.2M → Finish6066-6#16004#16010
TOTALS10712758-1687
📊

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