Boston Marathon logo
BOSTON MARATHON 2023

Kristen Molloy

Bib: 18390•F

NY

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Top 24%
Gender (Female)
#0 / 11423
Top 6%
Division (F18-39)
#0 / 4884
Top 12%
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
7:34/mi
23:29
↑ 97↓ 3451.5%
10K· 6.21 mi
7:04/mi
45:27
↑ 79↓ 1380.4%
15K· 9.32 mi
7:13/mi
1:07:53
↑ 67↓ 78
20K· 12.43 mi
7:09/mi
1:30:06
↑ 106↓ 860.1%
Half· 13.11 mi
7:09/mi
1:34:59
↑ 19↓ 370.5%
25K· 15.53 mi
7:11/mi
1:52:25
↑ 66↓ 880.2%
30K· 18.64 mi
7:21/mi
2:15:14
↑ 181↓ 1480.2%
20M
7:19/mi
2:25:11
↑ 64↓ 500.2%
21M
7:34/mi
2:32:45
↑ 106↓ 241.6%
35K· 21.75 mi
6:45/mi
2:37:48
↑ 17↓ 861.7%
23M
7:11/mi
2:46:48
↑ 23↓ 630.6%
24M
7:01/mi
2:53:49
↓ 821.3%
40K· 24.85 mi
7:20/mi
3:00:05
↓ 200.3%
25.2M
7:05/mi
3:02:32
↑ 13↓ 160.2%
Finish· 26.22 mi
7:05/mi
3:09:45
↑ 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 Half⚖️ Balanced
Distance13.11 mi
Time1:34:59
Pace7:15 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:34:46
Pace7:14 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:14:3023:297:3423:29
7:34
-
10K
6.21 mi11:36:2845:277:1921:58
7:04
-0:30
15K
9.32 mi11:58:541:07:537:1722:26
7:13
+0:09
20K
12.43 mi12:21:071:30:067:1522:13
7:09
-0:04
Half
13.11 mi12:26:001:34:597:154:53
7:09
0:00
25K
15.53 mi12:43:261:52:257:1417:26
7:11
+0:02
30K
18.64 mi13:06:152:15:147:1522:49
7:21
+0:10
20M
20.00 mi13:16:122:25:117:169:57
7:19
-0:02
21M
21.00 mi13:23:462:32:457:167:34
7:34
+0:15
35K
21.75 mi13:28:492:37:487:155:03
6:45
-0:49
23M
23.00 mi13:37:492:46:487:159:00
7:11
+0:26
24M
24.00 mi13:44:502:53:497:157:01
7:01
-0:10
40K
24.85 mi13:51:063:00:057:156:16
7:20
+0:19
25.2M
25.20 mi13:53:333:02:327:152:27
7:05
-0:15
Finish
26.22 mi14:00:463:09:457:157:13
7:05
0:00

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

6:45 /mi

Average Pace

7:15 /mi

Slowest Pace

7:34 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:38:42

84% of race

Time at Steady Pace

31:03

16% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:14 /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 mi11:14:3023:297:3423:29
7:34
#10144
10K
6.21 mi11:36:2845:277:1921:58
7:04
#8547
15K
9.32 mi11:58:541:07:537:1722:26
7:13
#8332
20K
12.43 mi12:21:071:30:067:1522:13
7:09
#7887
Half
13.11 mi12:26:001:34:597:154:53
7:09
#7879
25K
15.53 mi12:43:261:52:257:1417:26
7:11
#7629
30K
18.64 mi13:06:152:15:147:1522:49
7:21
#7327
20M
20.00 mi13:16:122:25:117:169:57
7:19
#7178
21M
21.00 mi13:23:462:32:457:167:34
7:34
#7000
35K
21.75 mi13:28:492:37:487:155:03
6:45
#6878
23M
23.00 mi13:37:492:46:487:159:00
7:11
#6709
24M
24.00 mi13:44:502:53:497:157:01
7:01
#6591
40K
24.85 mi13:51:063:00:057:156:16
7:20
#6503
25.2M
25.20 mi13:53:333:02:327:152:27
7:05
#6409
Finish
26.22 mi14:00:463:09:457:157:13
7:05
#6368
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi10144192519257943(Top 30%)1046(Top 9%)1046(Top 21%)
10K6.21 mi3.10 mi8547+15971234+6911234+6917261(Top 27%)831(Top 7%)831(Top 17%)
15K9.32 mi3.11 mi8332+2151156+781156+787943(Top 30%)1046(Top 9%)1046(Top 21%)
20K12.43 mi3.11 mi7887+4451012+1441012+1446829(Top 26%)739(Top 6%)739(Top 15%)
Half13.11 mi0.68 mi7879+81011+11011+17479(Top 28%)932(Top 8%)932(Top 19%)
25K15.53 mi2.42 mi7629+250943+68943+686634(Top 25%)740(Top 6%)740(Top 15%)
30K18.64 mi3.11 mi7327+302869+74869+746290(Top 24%)706(Top 6%)706(Top 14%)
20M20.00 mi1.36 mi7178+149839+30839+305783(Top 22%)645(Top 6%)645(Top 13%)
21M21.00 mi1.00 mi7000+178802+37802+374952(Top 19%)513(Top 4%)513(Top 11%)
35K21.75 mi0.75 mi6878+122779+23779+233939(Top 15%)321(Top 3%)321(Top 7%)
23M23.00 mi1.25 mi6709+169753+26753+264756(Top 18%)478(Top 4%)478(Top 10%)
24M24.00 mi1.00 mi6591+118738+15738+154794(Top 18%)520(Top 5%)520(Top 11%)
40K24.85 mi0.85 mi6503+88725+13725+135669(Top 21%)859(Top 8%)859(Top 18%)
25.2M25.20 mi0.35 mi6409+94701+24701+242035(Top 8%)143(Top 1%)143(Top 3%)
Finish26.22 mi1.02 mi6368+41698+3698+35771(Top 22%)1005(Top 9%)1005(Top 21%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 30%
×21story building
+97ft-345ft

Overall

7943

Females

1046

F18-39

1046

5K→10K

3.1 - 6.2 mi

Top 27%
×5story building
+79ft-138ft

Overall

7261

Females

831

F18-39

831

10K→15K

6.2 - 9.3 mi

Top 30%
×3story building
+67ft-78ft

Overall

7943

Females

1046

F18-39

1046

15K→20K

9.3 - 12.4 mi

Top 26%
×5story building
+106ft-86ft

Overall

6829

Females

739

F18-39

739

20K→Half

12.4 - 13.1 mi

Top 28%
×2story building
+19ft-37ft

Overall

7479

Females

932

F18-39

932

Half→25K

13.1 - 15.5 mi

Top 25%
×4story building
+66ft-88ft

Overall

6634

Females

740

F18-39

740

25K→30K

15.5 - 18.6 mi

Top 24%
×9story building
+181ft-148ft

Overall

6290

Females

706

F18-39

706

30K→20M

18.6 - 20.0 mi

Top 22%
×5story building
+64ft-50ft

Overall

5783

Females

645

F18-39

645

20M→21M

20.0 - 21.0 mi

Top 19%
×8story building
+106ft-24ft

Overall

4952

Females

513

F18-39

513

21M→35K

21.0 - 21.8 mi

Top 15%
×7story building
+17ft-86ft

Overall

3939

Females

321

F18-39

321

35K→23M

21.8 - 23.0 mi

Top 18%
×5story building
+23ft-63ft

Overall

4756

Females

478

F18-39

478

23M→24M

23.0 - 24.0 mi

Top 18%
×6story building
+12ft-82ft

Overall

4794

Females

520

F18-39

520

24M→40K

24.0 - 24.9 mi

Top 21%
×1story
+6ft-20ft

Overall

5669

Females

859

F18-39

859

40K→25.2M

24.9 - 25.2 mi

Top 8%
×1story
+13ft-16ft

Overall

2035

Females

143

F18-39

143

25.2M→Finish

25.2 - 26.2 mi

Top 22%
×2story building
+22ft-21ft

Overall

5771

Females

1005

F18-39

1005

Passing Analysis

Category:
Athletes Passed
3944*
Passed By
168
Net Change
+3776
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10144
5K → 10K1609*12+1597#10144#8547
10K → 15K26954+215#8547#8332
15K → 20K4494+445#8332#7887
20K → Half2618+8#7887#7879
Half → 25K2577+250#7879#7629
25K → 30K31917+302#7629#7327
30K → 20M1534+149#7327#7178
20M → 21M1868+178#7178#7000
21M → 35K1231+122#7000#6878
35K → 23M1756+169#6878#6709
23M → 24M1224+118#6709#6591
24M → 40K957+88#6591#6503
40K → 25.2M940+94#6503#6409
25.2M → Finish6726+41#6409#6368
TOTALS3944*168+3776

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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