Boston Marathon logo
BOSTON MARATHON 2023

Shannon Hagan

Bib: 21539•F

CA

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F45-49)
#0 / 1817
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
8:45/mi
27:11
↑ 97↓ 3451.5%
10K· 6.21 mi
8:39/mi
54:04
↑ 79↓ 1380.4%
15K· 9.32 mi
8:42/mi
1:21:07
↑ 67↓ 78
20K· 12.43 mi
8:57/mi
1:48:55
↑ 106↓ 860.1%
Half· 13.11 mi
8:37/mi
1:54:48
↑ 19↓ 370.5%
25K· 15.53 mi
8:48/mi
2:16:07
↑ 66↓ 880.2%
30K· 18.64 mi
9:01/mi
2:44:08
↑ 181↓ 1480.2%
20M
9:10/mi
2:56:35
↑ 64↓ 500.2%
21M
9:38/mi
3:06:13
↑ 106↓ 241.6%
35K· 21.75 mi
8:52/mi
3:12:51
↑ 17↓ 861.7%
23M
9:09/mi
3:24:18
↑ 23↓ 630.6%
24M
8:44/mi
3:33:02
↓ 821.3%
40K· 24.85 mi
8:46/mi
3:40:32
↓ 200.3%
25.2M
9:43/mi
3:43:53
↑ 13↓ 160.2%
Finish· 26.22 mi
8:49/mi
3:52:52
↑ 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
Time1:54:48
Pace8:45 /mi
2nd Half
Distance13.11 mi
Time1:58:04
Pace9:00 /mi
📊Positive Split: 2.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:21:2827:118:4527:11
8:45
-
10K
6.21 mi11:48:2154:048:4226:53
8:39
-0:06
15K
9.32 mi12:15:241:21:078:4227:03
8:42
+0:03
20K
12.43 mi12:43:121:48:558:4627:48
8:57
+0:15
Half
13.11 mi12:49:051:54:488:455:53
8:37
-0:20
25K
15.53 mi13:10:242:16:078:4621:19
8:48
+0:11
30K
18.64 mi13:38:252:44:088:4828:01
9:01
+0:13
20M
20.00 mi13:50:522:56:358:5012:27
9:10
+0:09
21M
21.00 mi14:00:303:06:138:529:38
9:38
+0:28
35K
21.75 mi14:07:083:12:518:526:38
8:52
-0:46
23M
23.00 mi14:18:353:24:188:5311:27
9:09
+0:17
24M
24.00 mi14:27:193:33:028:538:44
8:44
-0:25
40K
24.85 mi14:34:493:40:328:527:30
8:46
+0:02
25.2M
25.20 mi14:38:103:43:538:533:21
9:43
+0:57
Finish
26.22 mi14:47:093:52:528:538:59
8:49
-0:54

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

8:37 /mi

Average Pace

8:53 /mi

Slowest Pace

9:43 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:39:53

94% of race

Time at Steady Pace

12:59

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:53 /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 mi11:21:2827:118:4527:11
8:45
#19184
10K
6.21 mi11:48:2154:048:4226:53
8:39
#19114
15K
9.32 mi12:15:241:21:078:4227:03
8:42
#19061
20K
12.43 mi12:43:121:48:558:4627:48
8:57
#19140
Half
13.11 mi12:49:051:54:488:455:53
8:37
#19106
25K
15.53 mi13:10:242:16:078:4621:19
8:48
#18907
30K
18.64 mi13:38:252:44:088:4828:01
9:01
#18617
20M
20.00 mi13:50:522:56:358:5012:27
9:10
#18490
21M
21.00 mi14:00:303:06:138:529:38
9:38
#18364
35K
21.75 mi14:07:083:12:518:526:38
8:52
#18320
23M
23.00 mi14:18:353:24:188:5311:27
9:09
#18218
24M
24.00 mi14:27:193:33:028:538:44
8:44
#18134
40K
24.85 mi14:34:493:40:328:527:30
8:46
#18019
25.2M
25.20 mi14:38:103:43:538:533:21
9:43
#17986
Finish
26.22 mi14:47:093:52:528:538:59
8:49
#17952
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi191847318731819021(Top 71%)7116(Top 62%)7116(Top 392%)
10K6.21 mi3.10 mi19114+707224+947224+9419150(Top 72%)7171(Top 63%)7171(Top 395%)
15K9.32 mi3.11 mi19061+537169+557169+5519021(Top 71%)7116(Top 62%)7116(Top 392%)
20K12.43 mi3.11 mi19140-797199-307199-3019455(Top 73%)7354(Top 64%)7354(Top 405%)
Half13.11 mi0.68 mi19106+347186+137186+1318500(Top 69%)6777(Top 59%)6777(Top 373%)
25K15.53 mi2.42 mi18907+1997067+1197067+11917915(Top 67%)6520(Top 57%)6520(Top 359%)
30K18.64 mi3.11 mi18617+2906928+1396928+13917280(Top 65%)6235(Top 55%)6235(Top 343%)
20M20.00 mi1.36 mi18490+1276860+686860+6817383(Top 65%)6382(Top 56%)6382(Top 351%)
21M21.00 mi1.00 mi18364+1266805+556805+5516606(Top 62%)5976(Top 52%)5976(Top 329%)
35K21.75 mi0.75 mi18320+446788+176788+1717314(Top 65%)6454(Top 57%)6454(Top 355%)
23M23.00 mi1.25 mi18218+1026737+516737+5116794(Top 63%)6186(Top 54%)6186(Top 340%)
24M24.00 mi1.00 mi18134+846708+296708+2915887(Top 60%)5752(Top 50%)5752(Top 317%)
40K24.85 mi0.85 mi18019+1156653+556653+5514983(Top 56%)5298(Top 46%)5298(Top 292%)
25.2M25.20 mi0.35 mi17986+336636+176636+1716262(Top 61%)6029(Top 53%)6029(Top 332%)
Finish26.22 mi1.02 mi17952+346627+96627+917141(Top 64%)6456(Top 57%)6456(Top 355%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 71%
×21story building
+97ft-345ft

Overall

19021

Females

7116

F45-49

7116

5K→10K

3.1 - 6.2 mi

Top 72%
×5story building
+79ft-138ft

Overall

19150

Females

7171

F45-49

7171

10K→15K

6.2 - 9.3 mi

Top 71%
×3story building
+67ft-78ft

Overall

19021

Females

7116

F45-49

7116

15K→20K

9.3 - 12.4 mi

Top 73%
×5story building
+106ft-86ft

Overall

19455

Females

7354

F45-49

7354

20K→Half

12.4 - 13.1 mi

Top 69%
×2story building
+19ft-37ft

Overall

18500

Females

6777

F45-49

6777

Half→25K

13.1 - 15.5 mi

Top 67%
×4story building
+66ft-88ft

Overall

17915

Females

6520

F45-49

6520

25K→30K

15.5 - 18.6 mi

Top 65%
×9story building
+181ft-148ft

Overall

17280

Females

6235

F45-49

6235

30K→20M

18.6 - 20.0 mi

Top 65%
×5story building
+64ft-50ft

Overall

17383

Females

6382

F45-49

6382

20M→21M

20.0 - 21.0 mi

Top 62%
×8story building
+106ft-24ft

Overall

16606

Females

5976

F45-49

5976

21M→35K

21.0 - 21.8 mi

Top 65%
×7story building
+17ft-86ft

Overall

17314

Females

6454

F45-49

6454

35K→23M

21.8 - 23.0 mi

Top 63%
×5story building
+23ft-63ft

Overall

16794

Females

6186

F45-49

6186

23M→24M

23.0 - 24.0 mi

Top 60%
×6story building
+12ft-82ft

Overall

15887

Females

5752

F45-49

5752

24M→40K

24.0 - 24.9 mi

Top 56%
×1story
+6ft-20ft

Overall

14983

Females

5298

F45-49

5298

40K→25.2M

24.9 - 25.2 mi

Top 61%
×1story
+13ft-16ft

Overall

16262

Females

6029

F45-49

6029

25.2M→Finish

25.2 - 26.2 mi

Top 64%
×2story building
+22ft-21ft

Overall

17141

Females

6456

F45-49

6456

Passing Analysis

Category:
Athletes Passed
2165
Passed By
933
Net Change
+1232
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19184
5K → 10K386316+70#19184#19114
10K → 15K205152+53#19114#19061
15K → 20K128207-79#19061#19140
20K → Half4814+34#19140#19106
Half → 25K22223+199#19106#18907
25K → 30K33343+290#18907#18617
30K → 20M15932+127#18617#18490
20M → 21M15125+126#18490#18364
21M → 35K6521+44#18364#18320
35K → 23M13331+102#18320#18218
23M → 24M10218+84#18218#18134
24M → 40K1172+115#18134#18019
40K → 25.2M407+33#18019#17986
25.2M → Finish7642+34#17986#17952
TOTALS2165933+1232
📊

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