Boston Marathon logo
BOSTON MARATHON 2023

Erica Dillon

Bib: 27868•F

MA

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

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
9:34/mi
29:44
↑ 97↓ 3451.5%
10K· 6.21 mi
9:09/mi
58:09
↑ 79↓ 1380.4%
15K· 9.32 mi
9:23/mi
1:27:17
↑ 67↓ 78
20K· 12.43 mi
9:45/mi
1:57:36
↑ 106↓ 860.1%
Half· 13.11 mi
9:55/mi
2:04:22
↑ 19↓ 370.5%
25K· 15.53 mi
10:30/mi
2:29:49
↑ 66↓ 880.2%
30K· 18.64 mi
11:07/mi
3:04:20
↑ 181↓ 1480.2%
20M
11:35/mi
3:20:04
↑ 64↓ 500.2%
21M
12:45/mi
3:32:49
↑ 106↓ 241.6%
35K· 21.75 mi
11:02/mi
3:41:04
↑ 17↓ 861.7%
23M
12:11/mi
3:56:19
↑ 23↓ 630.6%
24M
11:06/mi
4:07:25
↓ 821.3%
40K· 24.85 mi
12:36/mi
4:18:11
↓ 200.3%
25.2M
12:40/mi
4:22:33
↑ 13↓ 160.2%
Finish· 26.22 mi
11:11/mi
4:33:57
↑ 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
Time2:04:22
Pace9:29 /mi
2nd Half
Distance13.11 mi
Time2:29:35
Pace11:25 /mi
📊Positive Split: 20.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:50:1829:449:3429:44
9:34
-
10K
6.21 mi12:18:4358:099:2228:25
9:09
-0:25
15K
9.32 mi12:47:511:27:179:2229:08
9:23
+0:14
20K
12.43 mi13:18:101:57:369:2830:19
9:45
+0:22
Half
13.11 mi13:24:562:04:229:296:46
9:55
+0:10
25K
15.53 mi13:50:232:29:499:3925:27
10:30
+0:35
30K
18.64 mi14:24:543:04:209:5334:31
11:07
+0:37
20M
20.00 mi14:40:383:20:0410:0015:44
11:35
+0:28
21M
21.00 mi14:53:233:32:4910:0812:45
12:45
+1:10
35K
21.75 mi15:01:383:41:0410:108:15
11:02
-1:43
23M
23.00 mi15:16:533:56:1910:1615:15
12:11
+1:09
24M
24.00 mi15:27:594:07:2510:1911:06
11:06
-1:05
40K
24.85 mi15:38:454:18:1110:2310:46
12:36
+1:30
25.2M
25.20 mi15:43:074:22:3310:254:22
12:40
+0:04
Finish
26.22 mi15:54:314:33:5710:2711:24
11:11
-1:29

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

9:09 /mi

Average Pace

10:27 /mi

Slowest Pace

12:45 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:29:49

55% of race

Time at Steady Pace

1:21:00

30% of race

Time at Slower Pace

43:08

16% of race

Average Pace: 10:27 /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 mi11:50:1829:449:3429:44
9:34
#22298
10K
6.21 mi12:18:4358:099:2228:25
9:09
#21913
15K
9.32 mi12:47:511:27:179:2229:08
9:23
#21883
20K
12.43 mi13:18:101:57:369:2830:19
9:45
#21992
Half
13.11 mi13:24:562:04:229:296:46
9:55
#22066
25K
15.53 mi13:50:232:29:499:3925:27
10:30
#22333
30K
18.64 mi14:24:543:04:209:5334:31
11:07
#22539
20M
20.00 mi14:40:383:20:0410:0015:44
11:35
#22645
21M
21.00 mi14:53:233:32:4910:0812:45
12:45
#22731
35K
21.75 mi15:01:383:41:0410:108:15
11:02
#22755
23M
23.00 mi15:16:533:56:1910:1615:15
12:11
#22867
24M
24.00 mi15:27:594:07:2510:1911:06
11:06
#22863
40K
24.85 mi15:38:454:18:1110:2310:46
12:36
#22957
25.2M
25.20 mi15:43:074:22:3310:254:22
12:40
#22967
Finish
26.22 mi15:54:314:33:5710:2711:24
11:11
#23034
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi222989031903121900(Top 82%)8735(Top 76%)8735(Top 179%)
10K6.21 mi3.10 mi21913+3858802+2298802+22921468(Top 81%)8542(Top 75%)8542(Top 175%)
15K9.32 mi3.11 mi21883+308772+308772+3021900(Top 82%)8735(Top 76%)8735(Top 179%)
20K12.43 mi3.11 mi21992-1098832-608832-6022316(Top 84%)8975(Top 79%)8975(Top 184%)
Half13.11 mi0.68 mi22066-748864-328864-3223133(Top 87%)9428(Top 83%)9428(Top 193%)
25K15.53 mi2.42 mi22333-2679020-1569020-15623202(Top 87%)9494(Top 83%)9494(Top 194%)
30K18.64 mi3.11 mi22539-2069153-1339153-13323259(Top 87%)9601(Top 84%)9601(Top 197%)
20M20.00 mi1.36 mi22645-1069217-649217-6423638(Top 89%)9859(Top 86%)9859(Top 202%)
21M21.00 mi1.00 mi22731-869266-499266-4923766(Top 89%)9964(Top 87%)9964(Top 204%)
35K21.75 mi0.75 mi22755-249288-229288-2223363(Top 88%)9797(Top 86%)9797(Top 201%)
23M23.00 mi1.25 mi22867-1129361-739361-7324229(Top 91%)10253(Top 90%)10253(Top 210%)
24M24.00 mi1.00 mi22863+49367-69367-623239(Top 87%)9759(Top 85%)9759(Top 200%)
40K24.85 mi0.85 mi22957-949422-559422-5524551(Top 92%)10457(Top 92%)10457(Top 214%)
25.2M25.20 mi0.35 mi22967-109424-29424-223542(Top 88%)9948(Top 87%)9948(Top 204%)
Finish26.22 mi1.02 mi23034-679462-389462-3824286(Top 91%)10296(Top 90%)10296(Top 211%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 82%
×21story building
+97ft-345ft

Overall

21900

Females

8735

F18-39

8735

5K→10K

3.1 - 6.2 mi

Top 81%
×5story building
+79ft-138ft

Overall

21468

Females

8542

F18-39

8542

10K→15K

6.2 - 9.3 mi

Top 82%
×3story building
+67ft-78ft

Overall

21900

Females

8735

F18-39

8735

15K→20K

9.3 - 12.4 mi

Top 84%
×5story building
+106ft-86ft

Overall

22316

Females

8975

F18-39

8975

20K→Half

12.4 - 13.1 mi

Top 87%
×2story building
+19ft-37ft

Overall

23133

Females

9428

F18-39

9428

Half→25K

13.1 - 15.5 mi

Top 87%
×4story building
+66ft-88ft

Overall

23202

Females

9494

F18-39

9494

25K→30K

15.5 - 18.6 mi

Top 87%
×9story building
+181ft-148ft

Overall

23259

Females

9601

F18-39

9601

30K→20M

18.6 - 20.0 mi

Top 89%
×5story building
+64ft-50ft

Overall

23638

Females

9859

F18-39

9859

20M→21M

20.0 - 21.0 mi

Top 89%
×8story building
+106ft-24ft

Overall

23766

Females

9964

F18-39

9964

21M→35K

21.0 - 21.8 mi

Top 88%
×7story building
+17ft-86ft

Overall

23363

Females

9797

F18-39

9797

35K→23M

21.8 - 23.0 mi

Top 91%
×5story building
+23ft-63ft

Overall

24229

Females

10253

F18-39

10253

23M→24M

23.0 - 24.0 mi

Top 87%
×6story building
+12ft-82ft

Overall

23239

Females

9759

F18-39

9759

24M→40K

24.0 - 24.9 mi

Top 92%
×1story
+6ft-20ft

Overall

24551

Females

10457

F18-39

10457

40K→25.2M

24.9 - 25.2 mi

Top 88%
×1story
+13ft-16ft

Overall

23542

Females

9948

F18-39

9948

25.2M→Finish

25.2 - 26.2 mi

Top 91%
×2story building
+22ft-21ft

Overall

24286

Females

10296

F18-39

10296

Passing Analysis

Category:
Athletes Passed
1055
Passed By
1791
Net Change
-736
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22298
5K → 10K498113+385#22298#21913
10K → 15K187157+30#21913#21883
15K → 20K92201-109#21883#21992
20K → Half1084-74#21992#22066
Half → 25K36303-267#22066#22333
25K → 30K63269-206#22333#22539
30K → 20M24130-106#22539#22645
20M → 21M25111-86#22645#22731
21M → 35K2044-24#22731#22755
35K → 23M24136-112#22755#22867
23M → 24M3430+4#22867#22863
24M → 40K14108-94#22863#22957
40K → 25.2M515-10#22957#22967
25.2M → Finish2390-67#22967#23034
TOTALS10551791-736
📊

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