Boston Marathon logo
BOSTON MARATHON 2023

Catherine Greer

Bib: 23120•F

WA

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
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
27:02
Rank: #18918
Start → 5K
27:02 | 8:42/mi
10K· 6.21 mi
56:27
Rank: #21000 (-2082)
5K → 10K
29:25 | 9:28/mi
15K· 9.32 mi
1:24:45
Rank: #21012 (-12)
10K → 15K
28:18 | 9:07/mi
20K· 12.43 mi
1:54:51
Rank: #21320 (-308)
15K → 20K
30:06 | 9:41/mi
Half· 13.11 mi
2:01:30
Rank: #21405 (-85)
20K → Half
6:39 | 9:45/mi
25K· 15.53 mi
2:27:04
Rank: #21793 (-388)
Half → 25K
25:34 | 10:33/mi
30K· 18.64 mi
3:02:15
Rank: #22293 (-500)
25K → 30K
35:11 | 11:19/mi
20M
3:18:07
Rank: #22417 (-124)
30K → 20M
15:52 | 11:41/mi
21M
3:30:48
Rank: #22519 (-102)
20M → 21M
12:41 | 12:41/mi
35K· 21.75 mi
3:39:30
Rank: #22595 (-76)
21M → 35K
8:42 | 11:38/mi
23M
3:54:48
Rank: #22725 (-130)
35K → 23M
15:18 | 12:13/mi
24M
4:06:19
Rank: #22783 (-58)
23M → 24M
11:31 | 11:31/mi
40K· 24.85 mi
4:16:11
Rank: #22804 (-21)
24M → 40K
9:52 | 11:32/mi
25.2M
4:20:25
Rank: #22812 (-8)
40K → 25.2M
4:14 | 12:17/mi
Finish· 26.22 mi
4:31:40
Rank: #22862 (-50)
25.2M → Finish
11:15 | 11:02/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
Time2:01:30
Pace9:16 /mi
2nd Half
Distance13.11 mi
Time2:30:10
Pace11:27 /mi
📊Positive Split: 23.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:21:5027:028:4227:02
8:42
-
10K
6.21 mi11:51:1556:279:0529:25
9:28
+0:46
15K
9.32 mi12:19:331:24:459:0628:18
9:07
-0:21
20K
12.43 mi12:49:391:54:519:1430:06
9:41
+0:34
Half
13.11 mi12:56:182:01:309:166:39
9:45
+0:04
25K
15.53 mi13:21:522:27:049:2825:34
10:33
+0:48
30K
18.64 mi13:57:033:02:159:4735:11
11:19
+0:46
20M
20.00 mi14:12:553:18:079:5415:52
11:41
+0:22
21M
21.00 mi14:25:363:30:4810:0212:41
12:41
+1:00
35K
21.75 mi14:34:183:39:3010:068:42
11:38
-1:03
23M
23.00 mi14:49:363:54:4810:1315:18
12:13
+0:35
24M
24.00 mi15:01:074:06:1910:1611:31
11:31
-0:42
40K
24.85 mi15:10:594:16:1110:189:52
11:32
+0:01
25.2M
25.20 mi15:15:134:20:2510:204:14
12:17
+0:45
Finish
26.22 mi15:26:284:31:4010:2211:15
11:02
-1:15

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

8:42 /mi

Average Pace

10:22 /mi

Slowest Pace

12:41 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:27:04

54% of race

Time at Steady Pace

1:32:23

34% of race

Time at Slower Pace

32:13

12% of race

Average Pace: 10:22 /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 mi11:21:5027:028:4227:02
8:42
#18918
10K
6.21 mi11:51:1556:279:0529:25
9:28
#21000
15K
9.32 mi12:19:331:24:459:0628:18
9:07
#21012
20K
12.43 mi12:49:391:54:519:1430:06
9:41
#21320
Half
13.11 mi12:56:182:01:309:166:39
9:45
#21405
25K
15.53 mi13:21:522:27:049:2825:34
10:33
#21793
30K
18.64 mi13:57:033:02:159:4735:11
11:19
#22293
20M
20.00 mi14:12:553:18:079:5415:52
11:41
#22417
21M
21.00 mi14:25:363:30:4810:0212:41
12:41
#22519
35K
21.75 mi14:34:183:39:3010:068:42
11:38
#22595
23M
23.00 mi14:49:363:54:4810:1315:18
12:13
#22725
24M
24.00 mi15:01:074:06:1910:1611:31
11:31
#22783
40K
24.85 mi15:10:594:16:1110:189:52
11:32
#22804
25.2M
25.20 mi15:15:134:20:2510:204:14
12:17
#22812
Finish
26.22 mi15:26:284:31:4010:2211:15
11:02
#22862
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF55-59Seg. OverallSeg. FemalesSeg. F55-59
5K3.11 mi3.11 mi189187155715520986(Top 79%)8229(Top 72%)8229(Top 1010%)
10K6.21 mi3.10 mi21000-20828325-11708325-117022433(Top 84%)9050(Top 79%)9050(Top 1110%)
15K9.32 mi3.11 mi21012-128293+328293+3220986(Top 79%)8229(Top 72%)8229(Top 1010%)
20K12.43 mi3.11 mi21320-3088445-1528445-15222133(Top 83%)8877(Top 78%)8877(Top 1089%)
Half13.11 mi0.68 mi21405-858493-488493-4822777(Top 86%)9232(Top 81%)9232(Top 1133%)
25K15.53 mi2.42 mi21793-3888706-2138706-21323267(Top 87%)9536(Top 83%)9536(Top 1170%)
30K18.64 mi3.11 mi22293-5009002-2969002-29623612(Top 89%)9784(Top 86%)9784(Top 1200%)
20M20.00 mi1.36 mi22417-1249085-839085-8323787(Top 89%)9956(Top 87%)9956(Top 1222%)
21M21.00 mi1.00 mi22519-1029152-679152-6723691(Top 89%)9919(Top 87%)9919(Top 1217%)
35K21.75 mi0.75 mi22595-769203-519203-5124263(Top 91%)10261(Top 90%)10261(Top 1259%)
23M23.00 mi1.25 mi22725-1309283-809283-8024269(Top 91%)10272(Top 90%)10272(Top 1260%)
24M24.00 mi1.00 mi22783-589323-409323-4023895(Top 90%)10103(Top 88%)10103(Top 1240%)
40K24.85 mi0.85 mi22804-219338-159338-1523276(Top 87%)9811(Top 86%)9811(Top 1204%)
25.2M25.20 mi0.35 mi22812-89343-59343-522951(Top 86%)9631(Top 84%)9631(Top 1182%)
Finish26.22 mi1.02 mi22862-509381-389381-3824051(Top 90%)10183(Top 89%)10183(Top 1249%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 79%
×21stories
+97ft-345ft

Overall

20986

Females

8229

F55-59

8229

5K→10K

3.1 - 6.2 mi

Top 84%
×5stories
+79ft-138ft

Overall

22433

Females

9050

F55-59

9050

10K→15K

6.2 - 9.3 mi

Top 79%
×3stories
+67ft-78ft

Overall

20986

Females

8229

F55-59

8229

15K→20K

9.3 - 12.4 mi

Top 83%
×5stories
+106ft-86ft

Overall

22133

Females

8877

F55-59

8877

20K→Half

12.4 - 13.1 mi

Top 86%
×2stories
+19ft-37ft

Overall

22777

Females

9232

F55-59

9232

Half→25K

13.1 - 15.5 mi

Top 87%
×4stories
+66ft-88ft

Overall

23267

Females

9536

F55-59

9536

25K→30K

15.5 - 18.6 mi

Top 89%
×9stories
+181ft-148ft

Overall

23612

Females

9784

F55-59

9784

30K→20M

18.6 - 20.0 mi

Top 89%
×5stories
+64ft-50ft

Overall

23787

Females

9956

F55-59

9956

20M→21M

20.0 - 21.0 mi

Top 89%
×8stories
+106ft-24ft

Overall

23691

Females

9919

F55-59

9919

21M→35K

21.0 - 21.8 mi

Top 91%
×7stories
+17ft-86ft

Overall

24263

Females

10261

F55-59

10261

35K→23M

21.8 - 23.0 mi

Top 91%
×5stories
+23ft-63ft

Overall

24269

Females

10272

F55-59

10272

23M→24M

23.0 - 24.0 mi

Top 90%
×6stories
+12ft-82ft

Overall

23895

Females

10103

F55-59

10103

24M→40K

24.0 - 24.9 mi

Top 87%
×1story
+6ft-20ft

Overall

23276

Females

9811

F55-59

9811

40K→25.2M

24.9 - 25.2 mi

Top 86%
×1story
+13ft-16ft

Overall

22951

Females

9631

F55-59

9631

25.2M→Finish

25.2 - 26.2 mi

Top 90%
×2stories
+22ft-21ft

Overall

24051

Females

10183

F55-59

10183

Passing Analysis

Category:
Athletes Passed
465
Passed By
4409
Net Change
-3944
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18918
5K → 10K82090-2082#18918#21000
10K → 15K166178-12#21000#21012
15K → 20K59367-308#21012#21320
20K → Half792-85#21320#21405
Half → 25K21409-388#21405#21793
25K → 30K36536-500#21793#22293
30K → 20M25149-124#22293#22417
20M → 21M29131-102#22417#22519
21M → 35K1995-76#22519#22595
35K → 23M21151-130#22595#22725
23M → 24M2482-58#22725#22783
24M → 40K2445-21#22783#22804
40K → 25.2M1119-8#22804#22812
25.2M → Finish1565-50#22812#22862
TOTALS4654409-3944
📊

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