Boston Marathon logo
BOSTON MARATHON 2023

Katharine Toll

Bib: 12226•F

MN

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Top 29%
Gender (Female)
#0 / 11423
Top 10%
Division (F18-39)
#0 / 4884
Top 19%
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
7:24/mi
22:59
↑ 97↓ 3451.5%
10K· 6.21 mi
7:14/mi
45:27
↑ 79↓ 1380.4%
15K· 9.32 mi
7:16/mi
1:08:02
↑ 67↓ 78
20K· 12.43 mi
7:15/mi
1:30:35
↑ 106↓ 860.1%
Half· 13.11 mi
7:07/mi
1:35:26
↑ 19↓ 370.5%
25K· 15.53 mi
7:20/mi
1:53:12
↑ 66↓ 880.2%
30K· 18.64 mi
7:28/mi
2:16:23
↑ 181↓ 1480.2%
20M
7:31/mi
2:26:36
↑ 64↓ 500.2%
21M
8:16/mi
2:34:52
↑ 106↓ 241.6%
35K· 21.75 mi
7:22/mi
2:40:23
↑ 17↓ 861.7%
23M
7:52/mi
2:50:14
↑ 23↓ 630.6%
24M
7:36/mi
2:57:50
↓ 821.3%
40K· 24.85 mi
8:02/mi
3:04:42
↓ 200.3%
25.2M
8:33/mi
3:07:39
↑ 13↓ 160.2%
Finish· 26.22 mi
7:29/mi
3:15:17
↑ 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 HalfFaster
Distance13.11 mi
Time1:35:26
Pace7:17 /mi
2nd Half
Distance13.11 mi
Time1:39:51
Pace7:37 /mi
📊Positive Split: 4.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:50:2522:597:2422:59
7:24
-
10K
6.21 mi11:12:5345:277:1922:28
7:14
-0:10
15K
9.32 mi11:35:281:08:027:1822:35
7:16
+0:02
20K
12.43 mi11:58:011:30:357:1722:33
7:15
-0:01
Half
13.11 mi12:02:521:35:267:174:51
7:07
-0:08
25K
15.53 mi12:20:381:53:127:1717:46
7:20
+0:13
30K
18.64 mi12:43:492:16:237:1923:11
7:28
+0:08
20M
20.00 mi12:54:022:26:367:2010:13
7:31
+0:03
21M
21.00 mi13:02:182:34:527:228:16
8:16
+0:45
35K
21.75 mi13:07:492:40:237:225:31
7:22
-0:54
23M
23.00 mi13:17:402:50:147:249:51
7:52
+0:30
24M
24.00 mi13:25:162:57:507:257:36
7:36
-0:16
40K
24.85 mi13:32:083:04:427:266:52
8:02
+0:26
25.2M
25.20 mi13:35:053:07:397:272:57
8:33
+0:31
Finish
26.22 mi13:42:433:15:177:277:38
7:29
-1:04

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

7:07 /mi

Average Pace

7:27 /mi

Slowest Pace

8:33 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

49:52

26% of race

Time at Steady Pace

1:57:29

60% of race

Time at Slower Pace

27:56

14% of race

Average Pace: 7:27 /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 mi10:50:2522:597:2422:59
7:24
#8820
10K
6.21 mi11:12:5345:277:1922:28
7:14
#8552
15K
9.32 mi11:35:281:08:027:1822:35
7:16
#8460
20K
12.43 mi11:58:011:30:357:1722:33
7:15
#8174
Half
13.11 mi12:02:521:35:267:174:51
7:07
#8120
25K
15.53 mi12:20:381:53:127:1717:46
7:20
#7980
30K
18.64 mi12:43:492:16:237:1923:11
7:28
#7753
20M
20.00 mi12:54:022:26:367:2010:13
7:31
#7663
21M
21.00 mi13:02:182:34:527:228:16
8:16
#7680
35K
21.75 mi13:07:492:40:237:225:31
7:22
#7662
23M
23.00 mi13:17:402:50:147:249:51
7:52
#7694
24M
24.00 mi13:25:162:57:507:257:36
7:36
#7701
40K
24.85 mi13:32:083:04:427:266:52
8:02
#7790
25.2M
25.20 mi13:35:053:07:397:272:57
8:33
#7823
Finish
26.22 mi13:42:433:15:177:277:38
7:29
#7818
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi8820132413248317(Top 31%)1189(Top 10%)1189(Top 24%)
10K6.21 mi3.10 mi8552+2681239+851239+858350(Top 31%)1169(Top 10%)1169(Top 24%)
15K9.32 mi3.11 mi8460+921203+361203+368317(Top 31%)1189(Top 10%)1189(Top 24%)
20K12.43 mi3.11 mi8174+2861108+951108+957508(Top 28%)936(Top 8%)936(Top 19%)
Half13.11 mi0.68 mi8120+541094+141094+147294(Top 27%)860(Top 8%)860(Top 18%)
25K15.53 mi2.42 mi7980+1401066+281066+287478(Top 28%)1005(Top 9%)1005(Top 21%)
30K18.64 mi3.11 mi7753+2271026+401026+406984(Top 26%)923(Top 8%)923(Top 19%)
20M20.00 mi1.36 mi7663+901011+151011+156937(Top 26%)1005(Top 9%)1005(Top 21%)
21M21.00 mi1.00 mi7680-171038-271038-279029(Top 34%)1926(Top 17%)1926(Top 39%)
35K21.75 mi0.75 mi7662+181032+61032+67671(Top 29%)1365(Top 12%)1365(Top 28%)
23M23.00 mi1.25 mi7694-321064-321064-328873(Top 33%)1955(Top 17%)1955(Top 40%)
24M24.00 mi1.00 mi7701-71092-281092-288419(Top 32%)1838(Top 16%)1838(Top 38%)
40K24.85 mi0.85 mi7790-891146-541146-5410259(Top 39%)2770(Top 24%)2770(Top 57%)
25.2M25.20 mi0.35 mi7823-331165-191165-199893(Top 37%)2609(Top 23%)2609(Top 53%)
Finish26.22 mi1.02 mi7818+51184-191184-198497(Top 32%)2018(Top 18%)2018(Top 41%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 31%
×21story building
+97ft-345ft

Overall

8317

Females

1189

F18-39

1189

5K→10K

3.1 - 6.2 mi

Top 31%
×5story building
+79ft-138ft

Overall

8350

Females

1169

F18-39

1169

10K→15K

6.2 - 9.3 mi

Top 31%
×3story building
+67ft-78ft

Overall

8317

Females

1189

F18-39

1189

15K→20K

9.3 - 12.4 mi

Top 28%
×5story building
+106ft-86ft

Overall

7508

Females

936

F18-39

936

20K→Half

12.4 - 13.1 mi

Top 27%
×2story building
+19ft-37ft

Overall

7294

Females

860

F18-39

860

Half→25K

13.1 - 15.5 mi

Top 28%
×4story building
+66ft-88ft

Overall

7478

Females

1005

F18-39

1005

25K→30K

15.5 - 18.6 mi

Top 26%
×9story building
+181ft-148ft

Overall

6984

Females

923

F18-39

923

30K→20M

18.6 - 20.0 mi

Top 26%
×5story building
+64ft-50ft

Overall

6937

Females

1005

F18-39

1005

20M→21M

20.0 - 21.0 mi

Top 34%
×8story building
+106ft-24ft

Overall

9029

Females

1926

F18-39

1926

21M→35K

21.0 - 21.8 mi

Top 29%
×7story building
+17ft-86ft

Overall

7671

Females

1365

F18-39

1365

35K→23M

21.8 - 23.0 mi

Top 33%
×5story building
+23ft-63ft

Overall

8873

Females

1955

F18-39

1955

23M→24M

23.0 - 24.0 mi

Top 32%
×6story building
+12ft-82ft

Overall

8419

Females

1838

F18-39

1838

24M→40K

24.0 - 24.9 mi

Top 39%
×1story
+6ft-20ft

Overall

10259

Females

2770

F18-39

2770

40K→25.2M

24.9 - 25.2 mi

Top 37%
×1story
+13ft-16ft

Overall

9893

Females

2609

F18-39

2609

25.2M→Finish

25.2 - 26.2 mi

Top 32%
×2story building
+22ft-21ft

Overall

8497

Females

2018

F18-39

2018

Passing Analysis

Category:
Athletes Passed
1839
Passed By
837
Net Change
+1002
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8820
5K → 10K398130+268#8820#8552
10K → 15K17785+92#8552#8460
15K → 20K30418+286#8460#8174
20K → Half573+54#8174#8120
Half → 25K16929+140#8120#7980
25K → 30K26942+227#7980#7753
30K → 20M11626+90#7753#7663
20M → 21M5572-17#7663#7680
21M → 35K4729+18#7680#7662
35K → 23M70102-32#7662#7694
23M → 24M6471-7#7694#7701
24M → 40K35124-89#7701#7790
40K → 25.2M1750-33#7790#7823
25.2M → Finish6156+5#7823#7818
TOTALS1839837+1002
📊

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