Boston Marathon logo
BOSTON MARATHON 2023

Katie Osterholm

Bib: 16201•F

WI

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Top 37%
Gender (Female)
#0 / 11423
Top 18%
Division (F18-39)
#0 / 4884
Top 32%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:02
Rank: #11782
Start → 5K
24:02 | 7:44/mi
10K· 6.21 mi
47:44
Rank: #11639 (+143)
5K → 10K
23:42 | 7:38/mi
15K· 9.32 mi
1:11:25
Rank: #11467 (+172)
10K → 15K
23:41 | 7:37/mi
20K· 12.43 mi
1:35:13
Rank: #11203 (+264)
15K → 20K
23:48 | 7:40/mi
Half· 13.11 mi
1:40:27
Rank: #11213 (-10)
20K → Half
5:14 | 7:40/mi
25K· 15.53 mi
1:59:13
Rank: #11098 (+115)
Half → 25K
18:46 | 7:44/mi
30K· 18.64 mi
2:23:24
Rank: #10710 (+388)
25K → 30K
24:11 | 7:47/mi
20M
2:34:03
Rank: #10571 (+139)
30K → 20M
10:39 | 7:50/mi
21M
2:42:16
Rank: #10446 (+125)
20M → 21M
8:13 | 8:13/mi
35K· 21.75 mi
2:48:03
Rank: #10403 (+43)
21M → 35K
5:47 | 7:44/mi
23M
2:57:53
Rank: #10276 (+127)
35K → 23M
9:50 | 7:51/mi
24M
3:05:44
Rank: #10255 (+21)
23M → 24M
7:51 | 7:51/mi
40K· 24.85 mi
3:12:21
Rank: #10138 (+117)
24M → 40K
6:37 | 7:44/mi
25.2M
3:15:11
Rank: #10087 (+51)
40K → 25.2M
2:50 | 8:13/mi
Finish· 26.22 mi
3:22:36
Rank: #9921 (+166)
25.2M → Finish
7:25 | 7:17/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
Time1:40:27
Pace7:40 /mi
2nd Half
Distance13.11 mi
Time1:42:09
Pace7:48 /mi
📊Positive Split: 1.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:14:0824:027:4424:02
7:44
-
10K
6.21 mi11:37:5047:447:4123:42
7:38
-0:06
15K
9.32 mi12:01:311:11:257:4023:41
7:37
-0:01
20K
12.43 mi12:25:191:35:137:4023:48
7:40
+0:03
Half
13.11 mi12:30:331:40:277:405:14
7:40
0:00
25K
15.53 mi12:49:191:59:137:4018:46
7:44
+0:04
30K
18.64 mi13:13:302:23:247:4224:11
7:47
+0:03
20M
20.00 mi13:24:092:34:037:4210:39
7:50
+0:03
21M
21.00 mi13:32:222:42:167:448:13
8:13
+0:23
35K
21.75 mi13:38:092:48:037:445:47
7:44
-0:29
23M
23.00 mi13:47:592:57:537:449:50
7:51
+0:07
24M
24.00 mi13:55:503:05:447:447:51
7:51
0:00
40K
24.85 mi14:02:273:12:217:446:37
7:44
-0:07
25.2M
25.20 mi14:05:173:15:117:452:50
8:13
+0:29
Finish
26.22 mi14:12:423:22:367:447:25
7:17
-0:56

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

7:17 /mi

Average Pace

7:44 /mi

Slowest Pace

8:13 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:11:33

95% of race

Time at Steady Pace

11:03

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:44 /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 mi11:14:0824:027:4424:02
7:44
#11782
10K
6.21 mi11:37:5047:447:4123:42
7:38
#11639
15K
9.32 mi12:01:311:11:257:4023:41
7:37
#11467
20K
12.43 mi12:25:191:35:137:4023:48
7:40
#11203
Half
13.11 mi12:30:331:40:277:405:14
7:40
#11213
25K
15.53 mi12:49:191:59:137:4018:46
7:44
#11098
30K
18.64 mi13:13:302:23:247:4224:11
7:47
#10710
20M
20.00 mi13:24:092:34:037:4210:39
7:50
#10571
21M
21.00 mi13:32:222:42:167:448:13
8:13
#10446
35K
21.75 mi13:38:092:48:037:445:47
7:44
#10403
23M
23.00 mi13:47:592:57:537:449:50
7:51
#10276
24M
24.00 mi13:55:503:05:447:447:51
7:51
#10255
40K
24.85 mi14:02:273:12:217:446:37
7:44
#10138
25.2M
25.20 mi14:05:173:15:117:452:50
8:13
#10087
Finish
26.22 mi14:12:423:22:367:447:25
7:17
#9921
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi117822738273811205(Top 42%)2460(Top 22%)2460(Top 50%)
10K6.21 mi3.10 mi11639+1432670+682670+6811590(Top 44%)2645(Top 23%)2645(Top 54%)
15K9.32 mi3.11 mi11467+1722579+912579+9111205(Top 42%)2460(Top 22%)2460(Top 50%)
20K12.43 mi3.11 mi11203+2642434+1452434+14510603(Top 40%)2202(Top 19%)2202(Top 45%)
Half13.11 mi0.68 mi11213-102451-172451-1711637(Top 44%)2681(Top 23%)2681(Top 55%)
25K15.53 mi2.42 mi11098+1152410+412410+4110627(Top 40%)2297(Top 20%)2297(Top 47%)
30K18.64 mi3.11 mi10710+3882257+1532257+1539247(Top 35%)1819(Top 16%)1819(Top 37%)
20M20.00 mi1.36 mi10571+1392209+482209+489168(Top 34%)1871(Top 16%)1871(Top 38%)
21M21.00 mi1.00 mi10446+1252179+302179+308729(Top 33%)1814(Top 16%)1814(Top 37%)
35K21.75 mi0.75 mi10403+432171+82171+810172(Top 38%)2441(Top 21%)2441(Top 50%)
23M23.00 mi1.25 mi10276+1272132+392132+398777(Top 33%)1924(Top 17%)1924(Top 39%)
24M24.00 mi1.00 mi10255+212152-202152-2010176(Top 38%)2669(Top 23%)2669(Top 55%)
40K24.85 mi0.85 mi10138+1172121+312121+318279(Top 31%)1861(Top 16%)1861(Top 38%)
25.2M25.20 mi0.35 mi10087+512111+102111+107864(Top 30%)1776(Top 16%)1776(Top 36%)
Finish26.22 mi1.02 mi9921+1662057+542057+547012(Top 26%)1439(Top 13%)1439(Top 29%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 42%
×21stories
+97ft-345ft

Overall

11205

Females

2460

F18-39

2460

5K→10K

3.1 - 6.2 mi

Top 44%
×5stories
+79ft-138ft

Overall

11590

Females

2645

F18-39

2645

10K→15K

6.2 - 9.3 mi

Top 42%
×3stories
+67ft-78ft

Overall

11205

Females

2460

F18-39

2460

15K→20K

9.3 - 12.4 mi

Top 40%
×5stories
+106ft-86ft

Overall

10603

Females

2202

F18-39

2202

20K→Half

12.4 - 13.1 mi

Top 44%
×2stories
+19ft-37ft

Overall

11637

Females

2681

F18-39

2681

Half→25K

13.1 - 15.5 mi

Top 40%
×4stories
+66ft-88ft

Overall

10627

Females

2297

F18-39

2297

25K→30K

15.5 - 18.6 mi

Top 35%
×9stories
+181ft-148ft

Overall

9247

Females

1819

F18-39

1819

30K→20M

18.6 - 20.0 mi

Top 34%
×5stories
+64ft-50ft

Overall

9168

Females

1871

F18-39

1871

20M→21M

20.0 - 21.0 mi

Top 33%
×8stories
+106ft-24ft

Overall

8729

Females

1814

F18-39

1814

21M→35K

21.0 - 21.8 mi

Top 38%
×7stories
+17ft-86ft

Overall

10172

Females

2441

F18-39

2441

35K→23M

21.8 - 23.0 mi

Top 33%
×5stories
+23ft-63ft

Overall

8777

Females

1924

F18-39

1924

23M→24M

23.0 - 24.0 mi

Top 38%
×6stories
+12ft-82ft

Overall

10176

Females

2669

F18-39

2669

24M→40K

24.0 - 24.9 mi

Top 31%
×1story
+6ft-20ft

Overall

8279

Females

1861

F18-39

1861

40K→25.2M

24.9 - 25.2 mi

Top 30%
×1story
+13ft-16ft

Overall

7864

Females

1776

F18-39

1776

25.2M→Finish

25.2 - 26.2 mi

Top 26%
×2stories
+22ft-21ft

Overall

7012

Females

1439

F18-39

1439

Passing Analysis

Category:
Athletes Passed
2559*
Passed By
698
Net Change
+1861
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11782
5K → 10K365222+143#11782#11639
10K → 15K283111+172#11639#11467
15K → 20K31349+264#11467#11203
20K → Half2535-10#11203#11213
Half → 25K18368+115#11213#11098
25K → 30K41426+388#11098#10710
30K → 20M158*19+139#10710#10571
20M → 21M15328+125#10571#10446
21M → 35K6724+43#10446#10403
35K → 23M15023+127#10403#10276
23M → 24M7049+21#10276#10255
24M → 40K13316+117#10255#10138
40K → 25.2M61*10+51#10138#10087
25.2M → Finish184*18+166#10087#9921
TOTALS2559*698+1861

* 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