Boston Marathon logo
BOSTON MARATHON 2023

Emily Lewis

Bib: 17188•F

MA

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Top 30%
Gender (Female)
#0 / 11423
Top 11%
Division (F18-39)
#0 / 4884
Top 21%
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
7:28/mi
23:13
↑ 97↓ 3451.5%
10K· 6.21 mi
7:26/mi
46:18
↑ 79↓ 1380.4%
15K· 9.32 mi
7:28/mi
1:09:29
↑ 67↓ 78
20K· 12.43 mi
7:26/mi
1:32:35
↑ 106↓ 860.1%
Half· 13.11 mi
7:27/mi
1:37:40
↑ 19↓ 370.5%
25K· 15.53 mi
7:27/mi
1:55:44
↑ 66↓ 880.2%
30K· 18.64 mi
7:34/mi
2:19:14
↑ 181↓ 1480.2%
20M
7:41/mi
2:29:40
↑ 64↓ 500.2%
21M
7:52/mi
2:37:32
↑ 106↓ 241.6%
35K· 21.75 mi
7:22/mi
2:43:03
↑ 17↓ 861.7%
23M
7:37/mi
2:52:35
↑ 23↓ 630.6%
24M
7:24/mi
2:59:59
↓ 821.3%
40K· 24.85 mi
7:26/mi
3:06:20
↓ 200.3%
25.2M
7:38/mi
3:08:58
↑ 13↓ 160.2%
Finish· 26.22 mi
7:04/mi
3:16:10
↑ 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 Half⚖️ Balanced
Distance13.11 mi
Time1:37:40
Pace7:27 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:38:30
Pace7:31 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:13:4423:137:2823:13
7:28
-
10K
6.21 mi11:36:4946:187:2723:05
7:26
-0:02
15K
9.32 mi12:00:001:09:297:2723:11
7:28
+0:02
20K
12.43 mi12:23:061:32:357:2723:06
7:26
-0:02
Half
13.11 mi12:28:111:37:407:275:05
7:27
+0:01
25K
15.53 mi12:46:151:55:447:2718:04
7:27
0:00
30K
18.64 mi13:09:452:19:147:2823:30
7:34
+0:07
20M
20.00 mi13:20:112:29:407:2910:26
7:41
+0:07
21M
21.00 mi13:28:032:37:327:307:52
7:52
+0:11
35K
21.75 mi13:33:342:43:037:305:31
7:22
-0:30
23M
23.00 mi13:43:062:52:357:309:32
7:37
+0:15
24M
24.00 mi13:50:302:59:597:307:24
7:24
-0:13
40K
24.85 mi13:56:513:06:207:306:21
7:26
+0:02
25.2M
25.20 mi13:59:293:08:587:302:38
7:38
+0:12
Finish
26.22 mi14:06:413:16:107:297:12
7:04
-0:34

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

7:04 /mi

Average Pace

7:29 /mi

Slowest Pace

7:52 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:08:18

96% of race

Time at Steady Pace

7:52

4% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:29 /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 mi11:13:4423:137:2823:13
7:28
#9401
10K
6.21 mi11:36:4946:187:2723:05
7:26
#9587
15K
9.32 mi12:00:001:09:297:2723:11
7:28
#9647
20K
12.43 mi12:23:061:32:357:2723:06
7:26
#9415
Half
13.11 mi12:28:111:37:407:275:05
7:27
#9429
25K
15.53 mi12:46:151:55:447:2718:04
7:27
#9232
30K
18.64 mi13:09:452:19:147:2823:30
7:34
#8916
20M
20.00 mi13:20:112:29:407:2910:26
7:41
#8819
21M
21.00 mi13:28:032:37:327:307:52
7:52
#8655
35K
21.75 mi13:33:342:43:037:305:31
7:22
#8619
23M
23.00 mi13:43:062:52:357:309:32
7:37
#8501
24M
24.00 mi13:50:302:59:597:307:24
7:24
#8395
40K
24.85 mi13:56:513:06:207:306:21
7:26
#8284
25.2M
25.20 mi13:59:293:08:587:302:38
7:38
#8210
Finish
26.22 mi14:06:413:16:107:297:12
7:04
#8072
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi9401157915799880(Top 37%)1785(Top 16%)1785(Top 37%)
10K6.21 mi3.10 mi9587-1861650-711650-719895(Top 37%)1767(Top 15%)1767(Top 36%)
15K9.32 mi3.11 mi9647-601682-321682-329880(Top 37%)1785(Top 16%)1785(Top 37%)
20K12.43 mi3.11 mi9415+2321597+851597+858803(Top 33%)1409(Top 12%)1409(Top 29%)
Half13.11 mi0.68 mi9429-141603-61603-69846(Top 37%)1801(Top 16%)1801(Top 37%)
25K15.53 mi2.42 mi9232+1971536+671536+678435(Top 32%)1339(Top 12%)1339(Top 27%)
30K18.64 mi3.11 mi8916+3161454+821454+827687(Top 29%)1177(Top 10%)1177(Top 24%)
20M20.00 mi1.36 mi8819+971433+211433+218042(Top 30%)1417(Top 12%)1417(Top 29%)
21M21.00 mi1.00 mi8655+1641394+391394+396576(Top 25%)973(Top 9%)973(Top 20%)
35K21.75 mi0.75 mi8619+361393+11393+17673(Top 29%)1367(Top 12%)1367(Top 28%)
23M23.00 mi1.25 mi8501+1181371+221371+227207(Top 27%)1249(Top 11%)1249(Top 26%)
24M24.00 mi1.00 mi8395+1061352+191352+197085(Top 27%)1314(Top 12%)1314(Top 27%)
40K24.85 mi0.85 mi8284+1111333+191333+196281(Top 24%)1077(Top 9%)1077(Top 22%)
25.2M25.20 mi0.35 mi8210+741315+181315+184653(Top 17%)625(Top 5%)625(Top 13%)
Finish26.22 mi1.02 mi8072+1381280+351280+355645(Top 21%)958(Top 8%)958(Top 20%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 37%
×21story building
+97ft-345ft

Overall

9880

Females

1785

F18-39

1785

5K→10K

3.1 - 6.2 mi

Top 37%
×5story building
+79ft-138ft

Overall

9895

Females

1767

F18-39

1767

10K→15K

6.2 - 9.3 mi

Top 37%
×3story building
+67ft-78ft

Overall

9880

Females

1785

F18-39

1785

15K→20K

9.3 - 12.4 mi

Top 33%
×5story building
+106ft-86ft

Overall

8803

Females

1409

F18-39

1409

20K→Half

12.4 - 13.1 mi

Top 37%
×2story building
+19ft-37ft

Overall

9846

Females

1801

F18-39

1801

Half→25K

13.1 - 15.5 mi

Top 32%
×4story building
+66ft-88ft

Overall

8435

Females

1339

F18-39

1339

25K→30K

15.5 - 18.6 mi

Top 29%
×9story building
+181ft-148ft

Overall

7687

Females

1177

F18-39

1177

30K→20M

18.6 - 20.0 mi

Top 30%
×5story building
+64ft-50ft

Overall

8042

Females

1417

F18-39

1417

20M→21M

20.0 - 21.0 mi

Top 25%
×8story building
+106ft-24ft

Overall

6576

Females

973

F18-39

973

21M→35K

21.0 - 21.8 mi

Top 29%
×7story building
+17ft-86ft

Overall

7673

Females

1367

F18-39

1367

35K→23M

21.8 - 23.0 mi

Top 27%
×5story building
+23ft-63ft

Overall

7207

Females

1249

F18-39

1249

23M→24M

23.0 - 24.0 mi

Top 27%
×6story building
+12ft-82ft

Overall

7085

Females

1314

F18-39

1314

24M→40K

24.0 - 24.9 mi

Top 24%
×1story
+6ft-20ft

Overall

6281

Females

1077

F18-39

1077

40K→25.2M

24.9 - 25.2 mi

Top 17%
×1story
+13ft-16ft

Overall

4653

Females

625

F18-39

625

25.2M→Finish

25.2 - 26.2 mi

Top 21%
×2story building
+22ft-21ft

Overall

5645

Females

958

F18-39

958

Passing Analysis

Category:
Athletes Passed
2192
Passed By
863
Net Change
+1329
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9401
5K → 10K212398-186#9401#9587
10K → 15K142202-60#9587#9647
15K → 20K27038+232#9647#9415
20K → Half1731-14#9415#9429
Half → 25K22427+197#9429#9232
25K → 30K35741+316#9232#8916
30K → 20M12528+97#8916#8819
20M → 21M1739+164#8819#8655
21M → 35K6226+36#8655#8619
35K → 23M14426+118#8619#8501
23M → 24M12418+106#8501#8395
24M → 40K1176+111#8395#8284
40K → 25.2M751+74#8284#8210
25.2M → Finish15012+138#8210#8072
TOTALS2192863+1329
📊

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