Boston Marathon logo
BOSTON MARATHON 2023

Kristie Summus

Bib: 13482•F

NY

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Top 31%
Gender (Female)
#0 / 11423
Top 12%
Division (F18-39)
#0 / 4884
Top 22%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:44
Rank: #10919
Start → 5K
23:44 | 7:38/mi
10K· 6.21 mi
46:52
Rank: #10413 (+506)
5K → 10K
23:08 | 7:27/mi
15K· 9.32 mi
1:09:51
Rank: #9984 (+429)
10K → 15K
22:59 | 7:24/mi
20K· 12.43 mi
1:32:45
Rank: #9521 (+463)
15K → 20K
22:54 | 7:22/mi
Half· 13.11 mi
1:37:47
Rank: #9494 (+27)
20K → Half
5:02 | 7:22/mi
25K· 15.53 mi
1:55:39
Rank: #9174 (+320)
Half → 25K
17:52 | 7:22/mi
30K· 18.64 mi
2:19:05
Rank: #8839 (+335)
25K → 30K
23:26 | 7:33/mi
20M
2:29:33
Rank: #8771 (+68)
30K → 20M
10:28 | 7:42/mi
21M
2:37:14
Rank: #8553 (+218)
20M → 21M
7:42 | 7:42/mi
35K· 21.75 mi
2:43:00
Rank: #8602 (-49)
21M → 35K
5:46 | 7:42/mi
23M
2:52:54
Rank: #8602
35K → 23M
9:54 | 7:54/mi
24M
3:00:23
Rank: #8521 (+81)
23M → 24M
7:29 | 7:29/mi
40K· 24.85 mi
3:06:50
Rank: #8445 (+76)
24M → 40K
6:27 | 7:33/mi
25.2M
3:09:41
Rank: #8429 (+16)
40K → 25.2M
2:51 | 8:16/mi
Finish· 26.22 mi
3:16:50
Rank: #8242 (+187)
25.2M → Finish
7:09 | 7:01/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
Time1:37:47
Pace7:28 /mi
2nd Half
Distance13.11 mi
Time1:39:03
Pace7:33 /mi
📊Positive Split: 1.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:52:4823:447:3823:44
7:38
-
10K
6.21 mi11:15:5646:527:3323:08
7:27
-0:11
15K
9.32 mi11:38:551:09:517:3022:59
7:24
-0:03
20K
12.43 mi12:01:491:32:457:2822:54
7:22
-0:02
Half
13.11 mi12:06:511:37:477:285:02
7:22
0:00
25K
15.53 mi12:24:431:55:397:2717:52
7:22
0:00
30K
18.64 mi12:48:092:19:057:2823:26
7:33
+0:11
20M
20.00 mi12:58:372:29:337:2910:28
7:42
+0:09
21M
21.00 mi13:06:182:37:147:297:42
7:42
0:00
35K
21.75 mi13:12:042:43:007:305:46
7:42
0:00
23M
23.00 mi13:21:582:52:547:319:54
7:54
+0:12
24M
24.00 mi13:29:273:00:237:317:29
7:29
-0:25
40K
24.85 mi13:35:543:06:507:316:27
7:33
+0:04
25.2M
25.20 mi13:38:453:09:417:322:51
8:16
+0:43
Finish
26.22 mi13:45:543:16:507:317:09
7:01
-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

7:01 /mi

Average Pace

7:31 /mi

Slowest Pace

8:16 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:04:05

94% of race

Time at Steady Pace

12:45

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:30 /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 mi10:52:4823:447:3823:44
7:38
#10919
10K
6.21 mi11:15:5646:527:3323:08
7:27
#10413
15K
9.32 mi11:38:551:09:517:3022:59
7:24
#9984
20K
12.43 mi12:01:491:32:457:2822:54
7:22
#9521
Half
13.11 mi12:06:511:37:477:285:02
7:22
#9494
25K
15.53 mi12:24:431:55:397:2717:52
7:22
#9174
30K
18.64 mi12:48:092:19:057:2823:26
7:33
#8839
20M
20.00 mi12:58:372:29:337:2910:28
7:42
#8771
21M
21.00 mi13:06:182:37:147:297:42
7:42
#8553
35K
21.75 mi13:12:042:43:007:305:46
7:42
#8602
23M
23.00 mi13:21:582:52:547:319:54
7:54
#8602
24M
24.00 mi13:29:273:00:237:317:29
7:29
#8521
40K
24.85 mi13:35:543:06:507:316:27
7:33
#8445
25.2M
25.20 mi13:38:453:09:417:322:51
8:16
#8429
Finish
26.22 mi13:45:543:16:507:317:09
7:01
#8242
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 mi10919228522859327(Top 35%)1553(Top 14%)1553(Top 32%)
10K6.21 mi3.10 mi10413+5062034+2512034+25110032(Top 38%)1834(Top 16%)1834(Top 38%)
15K9.32 mi3.11 mi9984+4291816+2181816+2189327(Top 35%)1553(Top 14%)1553(Top 32%)
20K12.43 mi3.11 mi9521+4631636+1801636+1808315(Top 31%)1226(Top 11%)1226(Top 25%)
Half13.11 mi0.68 mi9494+271627+91627+99132(Top 34%)1551(Top 14%)1551(Top 32%)
25K15.53 mi2.42 mi9174+3201510+1171510+1177781(Top 29%)1121(Top 10%)1121(Top 23%)
30K18.64 mi3.11 mi8839+3351419+911419+917533(Top 28%)1121(Top 10%)1121(Top 23%)
20M20.00 mi1.36 mi8771+681415+41415+48151(Top 31%)1468(Top 13%)1468(Top 30%)
21M21.00 mi1.00 mi8553+2181360+551360+555569(Top 21%)696(Top 6%)696(Top 14%)
35K21.75 mi0.75 mi8602-491387-271387-279912(Top 37%)2335(Top 20%)2335(Top 48%)
23M23.00 mi1.25 mi86021410-231410-239132(Top 34%)2095(Top 18%)2095(Top 43%)
24M24.00 mi1.00 mi8521+811397+131397+137619(Top 29%)1524(Top 13%)1524(Top 31%)
40K24.85 mi0.85 mi8445+761391+61391+67004(Top 26%)1365(Top 12%)1365(Top 28%)
25.2M25.20 mi0.35 mi8429+161396-51396-58139(Top 31%)1866(Top 16%)1866(Top 38%)
Finish26.22 mi1.02 mi8242+1871350+461350+465351(Top 20%)850(Top 7%)850(Top 17%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 35%
×21stories
+97ft-345ft

Overall

9327

Females

1553

F18-39

1553

5K→10K

3.1 - 6.2 mi

Top 38%
×5stories
+79ft-138ft

Overall

10032

Females

1834

F18-39

1834

10K→15K

6.2 - 9.3 mi

Top 35%
×3stories
+67ft-78ft

Overall

9327

Females

1553

F18-39

1553

15K→20K

9.3 - 12.4 mi

Top 31%
×5stories
+106ft-86ft

Overall

8315

Females

1226

F18-39

1226

20K→Half

12.4 - 13.1 mi

Top 34%
×2stories
+19ft-37ft

Overall

9132

Females

1551

F18-39

1551

Half→25K

13.1 - 15.5 mi

Top 29%
×4stories
+66ft-88ft

Overall

7781

Females

1121

F18-39

1121

25K→30K

15.5 - 18.6 mi

Top 28%
×9stories
+181ft-148ft

Overall

7533

Females

1121

F18-39

1121

30K→20M

18.6 - 20.0 mi

Top 31%
×5stories
+64ft-50ft

Overall

8151

Females

1468

F18-39

1468

20M→21M

20.0 - 21.0 mi

Top 21%
×8stories
+106ft-24ft

Overall

5569

Females

696

F18-39

696

21M→35K

21.0 - 21.8 mi

Top 37%
×7stories
+17ft-86ft

Overall

9912

Females

2335

F18-39

2335

35K→23M

21.8 - 23.0 mi

Top 34%
×5stories
+23ft-63ft

Overall

9132

Females

2095

F18-39

2095

23M→24M

23.0 - 24.0 mi

Top 29%
×6stories
+12ft-82ft

Overall

7619

Females

1524

F18-39

1524

24M→40K

24.0 - 24.9 mi

Top 26%
×1story
+6ft-20ft

Overall

7004

Females

1365

F18-39

1365

40K→25.2M

24.9 - 25.2 mi

Top 31%
×1story
+13ft-16ft

Overall

8139

Females

1866

F18-39

1866

25.2M→Finish

25.2 - 26.2 mi

Top 20%
×2stories
+22ft-21ft

Overall

5351

Females

850

F18-39

850

Passing Analysis

Category:
Athletes Passed
3148*
Passed By
471
Net Change
+2677
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10919
5K → 10K600*94+506#10919#10413
10K → 15K466*37+429#10413#9984
15K → 20K476*13+463#9984#9521
20K → Half4114+27#9521#9494
Half → 25K3233+320#9494#9174
25K → 30K36732+335#9174#8839
30K → 20M10739+68#8839#8771
20M → 21M2224+218#8771#8553
21M → 35K2271-49#8553#8602
35K → 23M87870#8602#8602
23M → 24M10524+81#8602#8521
24M → 40K10428+76#8521#8445
40K → 25.2M3519+16#8445#8429
25.2M → Finish1936+187#8429#8242
TOTALS3148*471+2677

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

📊

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