Boston Marathon logo
BOSTON MARATHON 2023

Sonia Boor

Bib: 11107•F

MA

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
7:26/mi
23:07
↑ 97↓ 3451.5%
10K· 6.21 mi
7:22/mi
45:59
↑ 79↓ 1380.4%
15K· 9.32 mi
7:21/mi
1:08:49
↑ 67↓ 78
20K· 12.43 mi
7:25/mi
1:31:50
↑ 106↓ 860.1%
Half· 13.11 mi
7:21/mi
1:36:51
↑ 19↓ 370.5%
25K· 15.53 mi
7:23/mi
1:54:44
↑ 66↓ 880.2%
30K· 18.64 mi
7:30/mi
2:18:03
↑ 181↓ 1480.2%
20M
7:50/mi
2:28:42
↑ 64↓ 500.2%
21M
7:50/mi
2:36:32
↑ 106↓ 241.6%
35K· 21.75 mi
7:22/mi
2:42:03
↑ 17↓ 861.7%
23M
8:18/mi
2:52:26
↑ 23↓ 630.6%
24M
7:00/mi
2:59:26
↓ 821.3%
40K· 24.85 mi
7:13/mi
3:05:36
↓ 200.3%
25.2M
7:32/mi
3:08:12
↑ 13↓ 160.2%
Finish· 26.22 mi
6:34/mi
3:14:53
↑ 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
Time1:36:51
Pace7:23 /mi
2nd Half
Distance13.11 mi
Time1:38:02
Pace7:29 /mi
📊Positive Split: 1.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:50:4323:077:2623:07
7:26
-
10K
6.21 mi11:13:3545:597:2422:52
7:22
-0:04
15K
9.32 mi11:36:251:08:497:2322:50
7:21
-0:01
20K
12.43 mi11:59:261:31:507:2323:01
7:25
+0:04
Half
13.11 mi12:04:271:36:517:235:01
7:21
-0:04
25K
15.53 mi12:22:201:54:447:2317:53
7:23
+0:02
30K
18.64 mi12:45:392:18:037:2423:19
7:30
+0:07
20M
20.00 mi12:56:182:28:427:2610:39
7:50
+0:20
21M
21.00 mi13:04:082:36:327:277:50
7:50
0:00
35K
21.75 mi13:09:392:42:037:275:31
7:22
-0:28
23M
23.00 mi13:20:022:52:267:3010:23
8:18
+0:56
24M
24.00 mi13:27:022:59:267:297:00
7:00
-1:18
40K
24.85 mi13:33:123:05:367:286:10
7:13
+0:13
25.2M
25.20 mi13:35:483:08:127:282:36
7:32
+0:19
Finish
26.22 mi13:42:293:14:537:266:41
6:34
-0:58

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

6:34 /mi

Average Pace

7:26 /mi

Slowest Pace

8:18 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

13:41

7% of race

Time at Steady Pace

2:32:20

78% of race

Time at Slower Pace

28:52

15% of race

Average Pace: 7:26 /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 mi10:50:4323:077:2623:07
7:26
#9170
10K
6.21 mi11:13:3545:597:2422:52
7:22
#9195
15K
9.32 mi11:36:251:08:497:2322:50
7:21
#9072
20K
12.43 mi11:59:261:31:507:2323:01
7:25
#8925
Half
13.11 mi12:04:271:36:517:235:01
7:21
#8921
25K
15.53 mi12:22:201:54:447:2317:53
7:23
#8728
30K
18.64 mi12:45:392:18:037:2423:19
7:30
#8400
20M
20.00 mi12:56:182:28:427:2610:39
7:50
#8434
21M
21.00 mi13:04:082:36:327:277:50
7:50
#8302
35K
21.75 mi13:09:392:42:037:275:31
7:22
#8260
23M
23.00 mi13:20:022:52:267:3010:23
8:18
#8449
24M
24.00 mi13:27:022:59:267:297:00
7:00
#8218
40K
24.85 mi13:33:123:05:367:286:10
7:13
#8062
25.2M
25.20 mi13:35:483:08:127:282:36
7:32
#7963
Finish
26.22 mi13:42:293:14:537:266:41
6:34
#7705
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 mi9170146414648950(Top 34%)1431(Top 13%)1431(Top 29%)
10K6.21 mi3.10 mi9195-251495-311495-319333(Top 35%)1563(Top 14%)1563(Top 32%)
15K9.32 mi3.11 mi9072+1231458+371458+378950(Top 34%)1431(Top 13%)1431(Top 29%)
20K12.43 mi3.11 mi8925+1471411+471411+478592(Top 32%)1335(Top 12%)1335(Top 27%)
Half13.11 mi0.68 mi8921+41417-61417-69131(Top 34%)1550(Top 14%)1550(Top 32%)
25K15.53 mi2.42 mi8728+1931345+721345+727841(Top 29%)1138(Top 10%)1138(Top 23%)
30K18.64 mi3.11 mi8400+3281268+771268+777269(Top 27%)1027(Top 9%)1027(Top 21%)
20M20.00 mi1.36 mi8434-341295-271295-279111(Top 34%)1851(Top 16%)1851(Top 38%)
21M21.00 mi1.00 mi8302+1321264+311264+316385(Top 24%)921(Top 8%)921(Top 19%)
35K21.75 mi0.75 mi8260+421261+31261+37702(Top 29%)1396(Top 12%)1396(Top 29%)
23M23.00 mi1.25 mi8449-1891349-881349-8811888(Top 45%)3464(Top 30%)3464(Top 71%)
24M24.00 mi1.00 mi8218+2311287+621287+624718(Top 18%)506(Top 4%)506(Top 10%)
40K24.85 mi0.85 mi8062+1561248+391248+395010(Top 19%)666(Top 6%)666(Top 14%)
25.2M25.20 mi0.35 mi7963+991219+291219+294209(Top 16%)526(Top 5%)526(Top 11%)
Finish26.22 mi1.02 mi7705+2581146+731146+732813(Top 11%)260(Top 2%)260(Top 5%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 34%
×21story building
+97ft-345ft

Overall

8950

Females

1431

F18-39

1431

5K→10K

3.1 - 6.2 mi

Top 35%
×5story building
+79ft-138ft

Overall

9333

Females

1563

F18-39

1563

10K→15K

6.2 - 9.3 mi

Top 34%
×3story building
+67ft-78ft

Overall

8950

Females

1431

F18-39

1431

15K→20K

9.3 - 12.4 mi

Top 32%
×5story building
+106ft-86ft

Overall

8592

Females

1335

F18-39

1335

20K→Half

12.4 - 13.1 mi

Top 34%
×2story building
+19ft-37ft

Overall

9131

Females

1550

F18-39

1550

Half→25K

13.1 - 15.5 mi

Top 29%
×4story building
+66ft-88ft

Overall

7841

Females

1138

F18-39

1138

25K→30K

15.5 - 18.6 mi

Top 27%
×9story building
+181ft-148ft

Overall

7269

Females

1027

F18-39

1027

30K→20M

18.6 - 20.0 mi

Top 34%
×5story building
+64ft-50ft

Overall

9111

Females

1851

F18-39

1851

20M→21M

20.0 - 21.0 mi

Top 24%
×8story building
+106ft-24ft

Overall

6385

Females

921

F18-39

921

21M→35K

21.0 - 21.8 mi

Top 29%
×7story building
+17ft-86ft

Overall

7702

Females

1396

F18-39

1396

35K→23M

21.8 - 23.0 mi

Top 45%
×5story building
+23ft-63ft

Overall

11888

Females

3464

F18-39

3464

23M→24M

23.0 - 24.0 mi

Top 18%
×6story building
+12ft-82ft

Overall

4718

Females

506

F18-39

506

24M→40K

24.0 - 24.9 mi

Top 19%
×1story
+6ft-20ft

Overall

5010

Females

666

F18-39

666

40K→25.2M

24.9 - 25.2 mi

Top 16%
×1story
+13ft-16ft

Overall

4209

Females

526

F18-39

526

25.2M→Finish

25.2 - 26.2 mi

Top 11%
×2story building
+22ft-21ft

Overall

2813

Females

260

F18-39

260

Passing Analysis

Category:
Athletes Passed
2348
Passed By
883
Net Change
+1465
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9170
5K → 10K256281-25#9170#9195
10K → 15K21592+123#9195#9072
15K → 20K20255+147#9072#8925
20K → Half3127+4#8925#8921
Half → 25K21825+193#8921#8728
25K → 30K35931+328#8728#8400
30K → 20M66100-34#8400#8434
20M → 21M14715+132#8434#8302
21M → 35K6725+42#8302#8260
35K → 23M32221-189#8260#8449
23M → 24M2343+231#8449#8218
24M → 40K1648+156#8218#8062
40K → 25.2M990+99#8062#7963
25.2M → Finish2580+258#7963#7705
TOTALS2348883+1465
📊

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