Boston Marathon logo
BOSTON MARATHON 2023

Margaret Mcgill

Bib: 14952•F

WI

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

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
28:49
Rank: #21458
Start → 5K
9:17/mi
28:49 split
10K· 6.21 mi
1:02:32
Rank: #23763 (-2305)
5K → 10K
10:51/mi
33:43 split
15K· 9.32 mi
1:36:42
Rank: #24377 (-614)
10K → 15K
11:00/mi
34:10 split
20K· 12.43 mi
2:10:42
Rank: #24447 (-70)
15K → 20K
10:57/mi
34:00 split
Half· 13.11 mi
2:17:40
Rank: #24409 (+38)
20K → Half
10:13/mi
6:58 split
25K· 15.53 mi
2:43:46
Rank: #24260 (+149)
Half → 25K
10:46/mi
26:06 split
30K· 18.64 mi
3:19:38
Rank: #24179 (+81)
25K → 30K
11:33/mi
35:52 split
20M
3:34:03
Rank: #24041 (+138)
30K → 20M
10:37/mi
14:25 split
21M
3:45:50
Rank: #23961 (+80)
20M → 21M
11:47/mi
11:47 split
35K· 21.75 mi
3:53:26
Rank: #23889 (+72)
21M → 35K
10:10/mi
7:36 split
23M
4:06:25
Rank: #23752 (+137)
35K → 23M
10:22/mi
12:59 split
24M
4:16:19
Rank: #23634 (+118)
23M → 24M
9:54/mi
9:54 split
40K· 24.85 mi
4:25:18
Rank: #23573 (+61)
24M → 40K
10:30/mi
8:59 split
25.2M
4:29:12
Rank: #23539 (+34)
40K → 25.2M
11:19/mi
3:54 split
Finish· 26.22 mi
4:39:02
Rank: #23458 (+81)
25.2M → Finish
9:39/mi
9:50 split

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
Time2:17:40
Pace10:30 /mi
2nd Half
Distance13.11 mi
Time2:21:22
Pace10:47 /mi
📊Positive Split: 2.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:57:4228:499:1728:49
9:17
-
10K
6.21 mi11:31:251:02:3210:0433:43
10:51
+1:34
15K
9.32 mi12:05:351:36:4210:2234:10
11:00
+0:09
20K
12.43 mi12:39:352:10:4210:3134:00
10:57
-0:03
Half
13.11 mi12:46:332:17:4010:306:58
10:13
-0:44
25K
15.53 mi13:12:392:43:4610:3326:06
10:46
+0:33
30K
18.64 mi13:48:313:19:3810:4335:52
11:33
+0:47
20M
20.00 mi14:02:563:34:0310:4214:25
10:37
-0:56
21M
21.00 mi14:14:433:45:5010:4511:47
11:47
+1:10
35K
21.75 mi14:22:193:53:2610:447:36
10:10
-1:37
23M
23.00 mi14:35:184:06:2510:4312:59
10:22
+0:12
24M
24.00 mi14:45:124:16:1910:419:54
9:54
-0:28
40K
24.85 mi14:54:114:25:1810:408:59
10:30
+0:36
25.2M
25.20 mi14:58:054:29:1210:413:54
11:19
+0:49
Finish
26.22 mi15:07:554:39:0210:399:50
9:39
-1:40

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

9:17 /mi

Average Pace

10:39 /mi

Slowest Pace

11:47 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:03:07

23% of race

Time at Steady Pace

2:10:12

47% of race

Time at Slower Pace

1:25:43

31% of race

Average Pace: 10:39 /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 mi10:57:4228:499:1728:49
9:17
#21458
10K
6.21 mi11:31:251:02:3210:0433:43
10:51
#23763
15K
9.32 mi12:05:351:36:4210:2234:10
11:00
#24377
20K
12.43 mi12:39:352:10:4210:3134:00
10:57
#24447
Half
13.11 mi12:46:332:17:4010:306:58
10:13
#24409
25K
15.53 mi13:12:392:43:4610:3326:06
10:46
#24260
30K
18.64 mi13:48:313:19:3810:4335:52
11:33
#24179
20M
20.00 mi14:02:563:34:0310:4214:25
10:37
#24041
21M
21.00 mi14:14:433:45:5010:4511:47
11:47
#23961
35K
21.75 mi14:22:193:53:2610:447:36
10:10
#23889
23M
23.00 mi14:35:184:06:2510:4312:59
10:22
#23752
24M
24.00 mi14:45:124:16:1910:419:54
9:54
#23634
40K
24.85 mi14:54:114:25:1810:408:59
10:30
#23573
25.2M
25.20 mi14:58:054:29:1210:413:54
11:19
#23539
Finish
26.22 mi15:07:554:39:0210:399:50
9:39
#23458
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi214588617861725163(Top 95%)10548(Top 92%)10548(Top 216%)
10K6.21 mi3.10 mi23763-23059765-11489765-114825269(Top 95%)10589(Top 93%)10589(Top 217%)
15K9.32 mi3.11 mi24377-61410095-33010095-33025163(Top 95%)10548(Top 92%)10548(Top 216%)
20K12.43 mi3.11 mi24447-7010141-4610141-4624548(Top 92%)10228(Top 90%)10228(Top 209%)
Half13.11 mi0.68 mi24409+3810124+1710124+1723696(Top 89%)9738(Top 85%)9738(Top 199%)
25K15.53 mi2.42 mi24260+14910052+7210052+7223610(Top 89%)9739(Top 85%)9739(Top 199%)
30K18.64 mi3.11 mi24179+8110027+2510027+2523922(Top 90%)9973(Top 87%)9973(Top 204%)
20M20.00 mi1.36 mi24041+1389955+729955+7221976(Top 83%)8967(Top 78%)8967(Top 184%)
21M21.00 mi1.00 mi23961+809916+399916+3922406(Top 84%)9231(Top 81%)9231(Top 189%)
35K21.75 mi0.75 mi23889+729886+309886+3021704(Top 82%)8890(Top 78%)8890(Top 182%)
23M23.00 mi1.25 mi23752+1379815+719815+7121015(Top 79%)8537(Top 75%)8537(Top 175%)
24M24.00 mi1.00 mi23634+1189760+559760+5520532(Top 77%)8286(Top 73%)8286(Top 170%)
40K24.85 mi0.85 mi23573+619728+329728+3221249(Top 80%)8752(Top 77%)8752(Top 179%)
25.2M25.20 mi0.35 mi23539+349720+89720+821185(Top 80%)8707(Top 76%)8707(Top 178%)
Finish26.22 mi1.02 mi23458+819688+329688+3220659(Top 78%)8389(Top 73%)8389(Top 172%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 95%
×21story building
+97ft-345ft

Overall

25163

Females

10548

F18-39

10548

5K→10K

3.1 - 6.2 mi

Top 95%
×5story building
+79ft-138ft

Overall

25269

Females

10589

F18-39

10589

10K→15K

6.2 - 9.3 mi

Top 95%
×3story building
+67ft-78ft

Overall

25163

Females

10548

F18-39

10548

15K→20K

9.3 - 12.4 mi

Top 92%
×5story building
+106ft-86ft

Overall

24548

Females

10228

F18-39

10228

20K→Half

12.4 - 13.1 mi

Top 89%
×2story building
+19ft-37ft

Overall

23696

Females

9738

F18-39

9738

Half→25K

13.1 - 15.5 mi

Top 89%
×4story building
+66ft-88ft

Overall

23610

Females

9739

F18-39

9739

25K→30K

15.5 - 18.6 mi

Top 90%
×9story building
+181ft-148ft

Overall

23922

Females

9973

F18-39

9973

30K→20M

18.6 - 20.0 mi

Top 83%
×5story building
+64ft-50ft

Overall

21976

Females

8967

F18-39

8967

20M→21M

20.0 - 21.0 mi

Top 84%
×8story building
+106ft-24ft

Overall

22406

Females

9231

F18-39

9231

21M→35K

21.0 - 21.8 mi

Top 82%
×7story building
+17ft-86ft

Overall

21704

Females

8890

F18-39

8890

35K→23M

21.8 - 23.0 mi

Top 79%
×5story building
+23ft-63ft

Overall

21015

Females

8537

F18-39

8537

23M→24M

23.0 - 24.0 mi

Top 77%
×6story building
+12ft-82ft

Overall

20532

Females

8286

F18-39

8286

24M→40K

24.0 - 24.9 mi

Top 80%
×1story
+6ft-20ft

Overall

21249

Females

8752

F18-39

8752

40K→25.2M

24.9 - 25.2 mi

Top 80%
×1story
+13ft-16ft

Overall

21185

Females

8707

F18-39

8707

25.2M→Finish

25.2 - 26.2 mi

Top 78%
×2story building
+22ft-21ft

Overall

20659

Females

8389

F18-39

8389

Passing Analysis

Category:
Athletes Passed
1210
Passed By
3210
Net Change
-2000
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21458
5K → 10K22307-2305#21458#23763
10K → 15K12626-614#23763#24377
15K → 20K70140-70#24377#24447
20K → Half435+38#24447#24409
Half → 25K16819+149#24409#24260
25K → 30K16180+81#24260#24179
30K → 20M1435+138#24179#24041
20M → 21M9212+80#24041#23961
21M → 35K731+72#23961#23889
35K → 23M1403+137#23889#23752
23M → 24M1180+118#23752#23634
24M → 40K676+61#23634#23573
40K → 25.2M362+34#23573#23539
25.2M → Finish854+81#23539#23458
TOTALS12103210-2000
📊

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
Share Feedback

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing