Boston Marathon logo
BOSTON MARATHON 2023

Mary Beth Harkleroad

Bib: 20853•F

PA

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 38%
Division (F55-59)
#0 / 815
Top 15%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
26:06
Rank: #16892
Start → 5K
26:06 | 8:24/mi
10K· 6.21 mi
52:10
Rank: #17185 (-293)
5K → 10K
26:04 | 8:23/mi
15K· 9.32 mi
1:18:37
Rank: #17426 (-241)
10K → 15K
26:27 | 8:31/mi
20K· 12.43 mi
1:45:04
Rank: #17283 (+143)
15K → 20K
26:27 | 8:31/mi
Half· 13.11 mi
1:50:45
Rank: #17246 (+37)
20K → Half
5:41 | 8:20/mi
25K· 15.53 mi
2:11:31
Rank: #17131 (+115)
Half → 25K
20:46 | 8:34/mi
30K· 18.64 mi
2:39:00
Rank: #16944 (+187)
25K → 30K
27:29 | 8:51/mi
20M
2:51:04
Rank: #16865 (+79)
30K → 20M
12:04 | 8:53/mi
21M
3:00:15
Rank: #16708 (+157)
20M → 21M
9:11 | 9:11/mi
35K· 21.75 mi
3:06:32
Rank: #16615 (+93)
21M → 35K
6:17 | 8:24/mi
23M
3:17:44
Rank: #16572 (+43)
35K → 23M
11:12 | 8:57/mi
24M
3:26:13
Rank: #16474 (+98)
23M → 24M
8:29 | 8:29/mi
40K· 24.85 mi
3:33:23
Rank: #16288 (+186)
24M → 40K
7:10 | 8:23/mi
25.2M
3:36:24
Rank: #16210 (+78)
40K → 25.2M
3:01 | 8:45/mi
Finish· 26.22 mi
3:44:32
Rank: #16061 (+149)
25.2M → Finish
8:08 | 7:59/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
Time1:50:45
Pace8:27 /mi
2nd Half
Distance13.11 mi
Time1:53:47
Pace8:41 /mi
📊Positive Split: 2.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:18:2326:068:2426:06
8:24
-
10K
6.21 mi11:44:2752:108:2426:04
8:23
-0:01
15K
9.32 mi12:10:541:18:378:2626:27
8:31
+0:08
20K
12.43 mi12:37:211:45:048:2726:27
8:31
0:00
Half
13.11 mi12:43:021:50:458:275:41
8:20
-0:11
25K
15.53 mi13:03:482:11:318:2820:46
8:34
+0:14
30K
18.64 mi13:31:172:39:008:3227:29
8:51
+0:17
20M
20.00 mi13:43:212:51:048:3312:04
8:53
+0:02
21M
21.00 mi13:52:323:00:158:359:11
9:11
+0:18
35K
21.75 mi13:58:493:06:328:356:17
8:24
-0:47
23M
23.00 mi14:10:013:17:448:3611:12
8:57
+0:33
24M
24.00 mi14:18:303:26:138:368:29
8:29
-0:28
40K
24.85 mi14:25:403:33:238:357:10
8:23
-0:06
25.2M
25.20 mi14:28:413:36:248:353:01
8:45
+0:22
Finish
26.22 mi14:36:493:44:328:348:08
7:59
-0:46

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

7:59 /mi

Average Pace

8:34 /mi

Slowest Pace

9:11 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:44:36

73% of race

Time at Steady Pace

59:56

27% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:34 /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 mi11:18:2326:068:2426:06
8:24
#16892
10K
6.21 mi11:44:2752:108:2426:04
8:23
#17185
15K
9.32 mi12:10:541:18:378:2626:27
8:31
#17426
20K
12.43 mi12:37:211:45:048:2726:27
8:31
#17283
Half
13.11 mi12:43:021:50:458:275:41
8:20
#17246
25K
15.53 mi13:03:482:11:318:2820:46
8:34
#17131
30K
18.64 mi13:31:172:39:008:3227:29
8:51
#16944
20M
20.00 mi13:43:212:51:048:3312:04
8:53
#16865
21M
21.00 mi13:52:323:00:158:359:11
9:11
#16708
35K
21.75 mi13:58:493:06:328:356:17
8:24
#16615
23M
23.00 mi14:10:013:17:448:3611:12
8:57
#16572
24M
24.00 mi14:18:303:26:138:368:29
8:29
#16474
40K
24.85 mi14:25:403:33:238:357:10
8:23
#16288
25.2M
25.20 mi14:28:413:36:248:353:01
8:45
#16210
Finish
26.22 mi14:36:493:44:328:348:08
7:59
#16061
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF55-59Seg. OverallSeg. FemalesSeg. F55-59
5K3.11 mi3.11 mi168925854585417906(Top 67%)6437(Top 56%)6437(Top 790%)
10K6.21 mi3.10 mi17185-2936043-1896043-18917526(Top 66%)6194(Top 54%)6194(Top 760%)
15K9.32 mi3.11 mi17426-2416174-1316174-13117906(Top 67%)6437(Top 56%)6437(Top 790%)
20K12.43 mi3.11 mi17283+1436099+756099+7516950(Top 64%)5897(Top 52%)5897(Top 724%)
Half13.11 mi0.68 mi17246+376076+236076+2316704(Top 63%)5715(Top 50%)5715(Top 701%)
25K15.53 mi2.42 mi17131+1156020+566020+5616594(Top 62%)5768(Top 50%)5768(Top 708%)
30K18.64 mi3.11 mi16944+1875928+925928+9216360(Top 61%)5704(Top 50%)5704(Top 700%)
20M20.00 mi1.36 mi16865+795892+365892+3615914(Top 60%)5521(Top 48%)5521(Top 677%)
21M21.00 mi1.00 mi16708+1575821+715821+7114425(Top 54%)4730(Top 41%)4730(Top 580%)
35K21.75 mi0.75 mi16615+935780+415780+4114767(Top 55%)4981(Top 44%)4981(Top 611%)
23M23.00 mi1.25 mi16572+435772+85772+815782(Top 59%)5620(Top 49%)5620(Top 690%)
24M24.00 mi1.00 mi16474+985732+405732+4014416(Top 54%)4910(Top 43%)4910(Top 602%)
40K24.85 mi0.85 mi16288+1865646+865646+8612651(Top 48%)4043(Top 35%)4043(Top 496%)
25.2M25.20 mi0.35 mi16210+785601+455601+4511148(Top 42%)3306(Top 29%)3306(Top 406%)
Finish26.22 mi1.02 mi16061+1495524+775524+7712044(Top 45%)3742(Top 33%)3742(Top 459%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 67%
×21stories
+97ft-345ft

Overall

17906

Females

6437

F55-59

6437

5K→10K

3.1 - 6.2 mi

Top 66%
×5stories
+79ft-138ft

Overall

17526

Females

6194

F55-59

6194

10K→15K

6.2 - 9.3 mi

Top 67%
×3stories
+67ft-78ft

Overall

17906

Females

6437

F55-59

6437

15K→20K

9.3 - 12.4 mi

Top 64%
×5stories
+106ft-86ft

Overall

16950

Females

5897

F55-59

5897

20K→Half

12.4 - 13.1 mi

Top 63%
×2stories
+19ft-37ft

Overall

16704

Females

5715

F55-59

5715

Half→25K

13.1 - 15.5 mi

Top 62%
×4stories
+66ft-88ft

Overall

16594

Females

5768

F55-59

5768

25K→30K

15.5 - 18.6 mi

Top 61%
×9stories
+181ft-148ft

Overall

16360

Females

5704

F55-59

5704

30K→20M

18.6 - 20.0 mi

Top 60%
×5stories
+64ft-50ft

Overall

15914

Females

5521

F55-59

5521

20M→21M

20.0 - 21.0 mi

Top 54%
×8stories
+106ft-24ft

Overall

14425

Females

4730

F55-59

4730

21M→35K

21.0 - 21.8 mi

Top 55%
×7stories
+17ft-86ft

Overall

14767

Females

4981

F55-59

4981

35K→23M

21.8 - 23.0 mi

Top 59%
×5stories
+23ft-63ft

Overall

15782

Females

5620

F55-59

5620

23M→24M

23.0 - 24.0 mi

Top 54%
×6stories
+12ft-82ft

Overall

14416

Females

4910

F55-59

4910

24M→40K

24.0 - 24.9 mi

Top 48%
×1story
+6ft-20ft

Overall

12651

Females

4043

F55-59

4043

40K→25.2M

24.9 - 25.2 mi

Top 42%
×1story
+13ft-16ft

Overall

11148

Females

3306

F55-59

3306

25.2M→Finish

25.2 - 26.2 mi

Top 45%
×2stories
+22ft-21ft

Overall

12044

Females

3742

F55-59

3742

Passing Analysis

Category:
Athletes Passed
2071
Passed By
1240
Net Change
+831
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16892
5K → 10K191484-293#16892#17185
10K → 15K107348-241#17185#17426
15K → 20K23693+143#17426#17283
20K → Half5518+37#17283#17246
Half → 25K17863+115#17246#17131
25K → 30K26376+187#17131#16944
30K → 20M11839+79#16944#16865
20M → 21M16710+157#16865#16708
21M → 35K10512+93#16708#16615
35K → 23M9350+43#16615#16572
23M → 24M11921+98#16572#16474
24M → 40K1959+186#16474#16288
40K → 25.2M791+78#16288#16210
25.2M → Finish16516+149#16210#16061
TOTALS20711240+831
📊

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