Boston Marathon logo
BOSTON MARATHON 2023

Melissa Doolaar

Bib: 11357•F

ON

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 20%
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
7:31/mi
23:20
↑ 97↓ 3451.5%
10K· 6.21 mi
7:17/mi
45:59
↑ 79↓ 1380.4%
15K· 9.32 mi
7:19/mi
1:08:44
↑ 67↓ 78
20K· 12.43 mi
7:24/mi
1:31:44
↑ 106↓ 860.1%
Half· 13.11 mi
7:18/mi
1:36:43
↑ 19↓ 370.5%
25K· 15.53 mi
7:29/mi
1:54:52
↑ 66↓ 880.2%
30K· 18.64 mi
7:37/mi
2:18:33
↑ 181↓ 1480.2%
20M
7:41/mi
2:28:59
↑ 64↓ 500.2%
21M
7:56/mi
2:36:55
↑ 106↓ 241.6%
35K· 21.75 mi
7:14/mi
2:42:20
↑ 17↓ 861.7%
23M
7:34/mi
2:51:48
↑ 23↓ 630.6%
24M
7:19/mi
2:59:07
↓ 821.3%
40K· 24.85 mi
7:24/mi
3:05:27
↓ 200.3%
25.2M
7:58/mi
3:08:12
↑ 13↓ 160.2%
Finish· 26.22 mi
7:22/mi
3:15:42
↑ 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
Time1:36:43
Pace7:23 /mi
2nd Half
Distance13.11 mi
Time1:38:59
Pace7:33 /mi
📊Positive Split: 2.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:50:0423:207:3123:20
7:31
-
10K
6.21 mi11:12:4345:597:2422:39
7:17
-0:14
15K
9.32 mi11:35:281:08:447:2222:45
7:19
+0:02
20K
12.43 mi11:58:281:31:447:2323:00
7:24
+0:05
Half
13.11 mi12:03:271:36:437:234:59
7:18
-0:06
25K
15.53 mi12:21:361:54:527:2418:09
7:29
+0:11
30K
18.64 mi12:45:172:18:337:2623:41
7:37
+0:08
20M
20.00 mi12:55:432:28:597:2710:26
7:41
+0:04
21M
21.00 mi13:03:392:36:557:287:56
7:56
+0:15
35K
21.75 mi13:09:042:42:207:285:25
7:14
-0:42
23M
23.00 mi13:18:322:51:487:289:28
7:34
+0:20
24M
24.00 mi13:25:512:59:077:287:19
7:19
-0:15
40K
24.85 mi13:32:113:05:277:286:20
7:24
+0:05
25.2M
25.20 mi13:34:563:08:127:282:45
7:58
+0:34
Finish
26.22 mi13:42:263:15:427:287:30
7:22
-0:36

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

7:14 /mi

Average Pace

7:28 /mi

Slowest Pace

7:58 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:12:57

99% of race

Time at Steady Pace

2:45

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:28 /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 mi10:50:0423:207:3123:20
7:31
#9724
10K
6.21 mi11:12:4345:597:2422:39
7:17
#9185
15K
9.32 mi11:35:281:08:447:2222:45
7:19
#9008
20K
12.43 mi11:58:281:31:447:2323:00
7:24
#8864
Half
13.11 mi12:03:271:36:437:234:59
7:18
#8831
25K
15.53 mi12:21:361:54:527:2418:09
7:29
#8801
30K
18.64 mi12:45:172:18:337:2623:41
7:37
#8628
20M
20.00 mi12:55:432:28:597:2710:26
7:41
#8550
21M
21.00 mi13:03:392:36:557:287:56
7:56
#8444
35K
21.75 mi13:09:042:42:207:285:25
7:14
#8374
23M
23.00 mi13:18:322:51:487:289:28
7:34
#8225
24M
24.00 mi13:25:512:59:077:287:19
7:19
#8109
40K
24.85 mi13:32:113:05:277:286:20
7:24
#7991
25.2M
25.20 mi13:34:563:08:127:282:45
7:58
#7962
Finish
26.22 mi13:42:263:15:427:287:30
7:22
#7930
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi9724171817188753(Top 33%)1343(Top 12%)1343(Top 27%)
10K6.21 mi3.10 mi9185+5391485+2331485+2338809(Top 33%)1336(Top 12%)1336(Top 27%)
15K9.32 mi3.11 mi9008+1771423+621423+628753(Top 33%)1343(Top 12%)1343(Top 27%)
20K12.43 mi3.11 mi8864+1441381+421381+428549(Top 32%)1313(Top 11%)1313(Top 27%)
Half13.11 mi0.68 mi8831+331369+121369+128692(Top 33%)1352(Top 12%)1352(Top 28%)
25K15.53 mi2.42 mi8801+301373-41373-48690(Top 33%)1419(Top 12%)1419(Top 29%)
30K18.64 mi3.11 mi8628+1731347+261347+268123(Top 31%)1354(Top 12%)1354(Top 28%)
20M20.00 mi1.36 mi8550+781335+121335+128040(Top 30%)1415(Top 12%)1415(Top 29%)
21M21.00 mi1.00 mi8444+1061319+161319+166949(Top 26%)1109(Top 10%)1109(Top 23%)
35K21.75 mi0.75 mi8374+701301+181301+186821(Top 26%)1039(Top 9%)1039(Top 21%)
23M23.00 mi1.25 mi8225+1491269+321269+326829(Top 26%)1112(Top 10%)1112(Top 23%)
24M24.00 mi1.00 mi8109+1161243+261243+266517(Top 24%)1078(Top 9%)1078(Top 22%)
40K24.85 mi0.85 mi7991+1181219+241219+246178(Top 23%)1051(Top 9%)1051(Top 22%)
25.2M25.20 mi0.35 mi7962+291218+11218+16418(Top 24%)1202(Top 11%)1202(Top 25%)
Finish26.22 mi1.02 mi7930+321231-131231-137526(Top 28%)1631(Top 14%)1631(Top 33%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 33%
×21story building
+97ft-345ft

Overall

8753

Females

1343

F18-39

1343

5K→10K

3.1 - 6.2 mi

Top 33%
×5story building
+79ft-138ft

Overall

8809

Females

1336

F18-39

1336

10K→15K

6.2 - 9.3 mi

Top 33%
×3story building
+67ft-78ft

Overall

8753

Females

1343

F18-39

1343

15K→20K

9.3 - 12.4 mi

Top 32%
×5story building
+106ft-86ft

Overall

8549

Females

1313

F18-39

1313

20K→Half

12.4 - 13.1 mi

Top 33%
×2story building
+19ft-37ft

Overall

8692

Females

1352

F18-39

1352

Half→25K

13.1 - 15.5 mi

Top 33%
×4story building
+66ft-88ft

Overall

8690

Females

1419

F18-39

1419

25K→30K

15.5 - 18.6 mi

Top 31%
×9story building
+181ft-148ft

Overall

8123

Females

1354

F18-39

1354

30K→20M

18.6 - 20.0 mi

Top 30%
×5story building
+64ft-50ft

Overall

8040

Females

1415

F18-39

1415

20M→21M

20.0 - 21.0 mi

Top 26%
×8story building
+106ft-24ft

Overall

6949

Females

1109

F18-39

1109

21M→35K

21.0 - 21.8 mi

Top 26%
×7story building
+17ft-86ft

Overall

6821

Females

1039

F18-39

1039

35K→23M

21.8 - 23.0 mi

Top 26%
×5story building
+23ft-63ft

Overall

6829

Females

1112

F18-39

1112

23M→24M

23.0 - 24.0 mi

Top 24%
×6story building
+12ft-82ft

Overall

6517

Females

1078

F18-39

1078

24M→40K

24.0 - 24.9 mi

Top 23%
×1story
+6ft-20ft

Overall

6178

Females

1051

F18-39

1051

40K→25.2M

24.9 - 25.2 mi

Top 24%
×1story
+13ft-16ft

Overall

6418

Females

1202

F18-39

1202

25.2M→Finish

25.2 - 26.2 mi

Top 28%
×2story building
+22ft-21ft

Overall

7526

Females

1631

F18-39

1631

Passing Analysis

Category:
Athletes Passed
2369
Passed By
575
Net Change
+1794
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9724
5K → 10K63798+539#9724#9185
10K → 15K24467+177#9185#9008
15K → 20K20460+144#9008#8864
20K → Half418+33#8864#8831
Half → 25K11888+30#8831#8801
25K → 30K25077+173#8801#8628
30K → 20M11638+78#8628#8550
20M → 21M13024+106#8550#8444
21M → 35K8313+70#8444#8374
35K → 23M16920+149#8374#8225
23M → 24M12913+116#8225#8109
24M → 40K1279+118#8109#7991
40K → 25.2M4213+29#7991#7962
25.2M → Finish7947+32#7962#7930
TOTALS2369575+1794
📊

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