Boston Marathon logo
BOSTON MARATHON 2023

Grace Gray

Bib: 4354•F

MI

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Top 21%
Gender (Female)
#0 / 11423
Top 4%
Division (F18-39)
#0 / 4884
Top 8%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:33
Rank: #2994
Start → 5K
20:33 | 6:37/mi
10K· 6.21 mi
40:54
Rank: #3026 (-32)
5K → 10K
20:21 | 6:33/mi
15K· 9.32 mi
1:01:26
Rank: #3136 (-110)
10K → 15K
20:32 | 6:37/mi
20K· 12.43 mi
1:23:17
Rank: #3891 (-755)
15K → 20K
21:51 | 7:02/mi
Half· 13.11 mi
1:27:50
Rank: #3894 (-3)
20K → Half
4:33 | 6:40/mi
25K· 15.53 mi
1:44:32
Rank: #4052 (-158)
Half → 25K
16:42 | 6:53/mi
30K· 18.64 mi
2:07:29
Rank: #4662 (-610)
25K → 30K
22:57 | 7:23/mi
20M
2:22:13
Rank: #6298 (-1636)
30K → 20M
14:44 | 10:51/mi
21M
2:29:41
Rank: #6151 (+147)
20M → 21M
7:28 | 7:28/mi
35K· 21.75 mi
2:34:58
Rank: #6121 (+30)
21M → 35K
5:17 | 7:04/mi
23M
2:43:59
Rank: #5983 (+138)
35K → 23M
9:01 | 7:12/mi
24M
2:50:54
Rank: #5846 (+137)
23M → 24M
6:55 | 6:55/mi
40K· 24.85 mi
2:56:49
Rank: #5725 (+121)
24M → 40K
5:55 | 6:55/mi
25.2M
2:59:21
Rank: #5658 (+67)
40K → 25.2M
2:32 | 7:21/mi
Finish· 26.22 mi
3:06:16
Rank: #5534 (+124)
25.2M → Finish
6:55 | 6:47/mi

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
Time1:27:50
Pace6:42 /mi
2nd Half
Distance13.11 mi
Time1:38:26
Pace7:31 /mi
📊Positive Split: 12.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:22:1720:336:3720:33
6:37
-
10K
6.21 mi10:42:3840:546:3520:21
6:33
-0:04
15K
9.32 mi11:03:101:01:266:3520:32
6:37
+0:04
20K
12.43 mi11:25:011:23:176:4221:51
7:02
+0:25
Half
13.11 mi11:29:341:27:506:424:33
6:40
-0:22
25K
15.53 mi11:46:161:44:326:4416:42
6:53
+0:13
30K
18.64 mi12:09:132:07:296:5022:57
7:23
+0:30
20M
20.00 mi12:23:572:22:137:0714:44
10:51
+3:28
21M
21.00 mi12:31:252:29:417:087:28
7:28
-3:23
35K
21.75 mi12:36:422:34:587:085:17
7:04
-0:24
23M
23.00 mi12:45:432:43:597:089:01
7:12
+0:08
24M
24.00 mi12:52:382:50:547:076:55
6:55
-0:17
40K
24.85 mi12:58:332:56:497:075:55
6:55
0:00
25.2M
25.20 mi13:01:052:59:217:072:32
7:21
+0:26
Finish
26.22 mi13:08:003:06:167:076:55
6:47
-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

6:33 /mi

Average Pace

7:07 /mi

Slowest Pace

10:51 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

0:00

0% of race

Time at Steady Pace

2:44:04

88% of race

Time at Slower Pace

22:12

12% of race

Average Pace: 7:06 /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 mi10:22:1720:336:3720:33
6:37
#2994
10K
6.21 mi10:42:3840:546:3520:21
6:33
#3026
15K
9.32 mi11:03:101:01:266:3520:32
6:37
#3136
20K
12.43 mi11:25:011:23:176:4221:51
7:02
#3891
Half
13.11 mi11:29:341:27:506:424:33
6:40
#3894
25K
15.53 mi11:46:161:44:326:4416:42
6:53
#4052
30K
18.64 mi12:09:132:07:296:5022:57
7:23
#4662
20M
20.00 mi12:23:572:22:137:0714:44
10:51
#6298
21M
21.00 mi12:31:252:29:417:087:28
7:28
#6151
35K
21.75 mi12:36:422:34:587:085:17
7:04
#6121
23M
23.00 mi12:45:432:43:597:089:01
7:12
#5983
24M
24.00 mi12:52:382:50:547:076:55
6:55
#5846
40K
24.85 mi12:58:332:56:497:075:55
6:55
#5725
25.2M
25.20 mi13:01:052:59:217:072:32
7:21
#5658
Finish
26.22 mi13:08:003:06:167:076:55
6:47
#5534
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi29941521523380(Top 13%)172(Top 2%)172(Top 4%)
10K6.21 mi3.10 mi3026-32142+10142+103146(Top 12%)144(Top 1%)144(Top 3%)
15K9.32 mi3.11 mi3136-110147-5147-53380(Top 13%)172(Top 2%)172(Top 4%)
20K12.43 mi3.11 mi3891-755223-76223-766186(Top 23%)569(Top 5%)569(Top 12%)
Half13.11 mi0.68 mi3894-3221+2221+24155(Top 16%)271(Top 2%)271(Top 6%)
25K15.53 mi2.42 mi4052-158241-20241-204891(Top 18%)362(Top 3%)362(Top 7%)
30K18.64 mi3.11 mi4662-610310-69310-696541(Top 25%)771(Top 7%)771(Top 16%)
20M20.00 mi1.36 mi6298-1636613-303613-30322411(Top 84%)9200(Top 81%)9200(Top 188%)
21M21.00 mi1.00 mi6151+147588+25588+254448(Top 17%)390(Top 3%)390(Top 8%)
35K21.75 mi0.75 mi6121+30589-1589-15721(Top 21%)667(Top 6%)667(Top 14%)
23M23.00 mi1.25 mi5983+138571+18571+184821(Top 18%)494(Top 4%)494(Top 10%)
24M24.00 mi1.00 mi5846+137548+23548+234286(Top 16%)393(Top 3%)393(Top 8%)
40K24.85 mi0.85 mi5725+121532+16532+163479(Top 13%)314(Top 3%)314(Top 6%)
25.2M25.20 mi0.35 mi5658+67522+10522+103264(Top 12%)294(Top 3%)294(Top 6%)
Finish26.22 mi1.02 mi5534+124503+19503+194030(Top 15%)466(Top 4%)466(Top 10%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 13%
×21stories
+97ft-345ft

Overall

3380

Females

172

F18-39

172

5K→10K

3.1 - 6.2 mi

Top 12%
×5stories
+79ft-138ft

Overall

3146

Females

144

F18-39

144

10K→15K

6.2 - 9.3 mi

Top 13%
×3stories
+67ft-78ft

Overall

3380

Females

172

F18-39

172

15K→20K

9.3 - 12.4 mi

Top 23%
×5stories
+106ft-86ft

Overall

6186

Females

569

F18-39

569

20K→Half

12.4 - 13.1 mi

Top 16%
×2stories
+19ft-37ft

Overall

4155

Females

271

F18-39

271

Half→25K

13.1 - 15.5 mi

Top 18%
×4stories
+66ft-88ft

Overall

4891

Females

362

F18-39

362

25K→30K

15.5 - 18.6 mi

Top 25%
×9stories
+181ft-148ft

Overall

6541

Females

771

F18-39

771

30K→20M

18.6 - 20.0 mi

Top 84%
×5stories
+64ft-50ft

Overall

22411

Females

9200

F18-39

9200

20M→21M

20.0 - 21.0 mi

Top 17%
×8stories
+106ft-24ft

Overall

4448

Females

390

F18-39

390

21M→35K

21.0 - 21.8 mi

Top 21%
×7stories
+17ft-86ft

Overall

5721

Females

667

F18-39

667

35K→23M

21.8 - 23.0 mi

Top 18%
×5stories
+23ft-63ft

Overall

4821

Females

494

F18-39

494

23M→24M

23.0 - 24.0 mi

Top 16%
×6stories
+12ft-82ft

Overall

4286

Females

393

F18-39

393

24M→40K

24.0 - 24.9 mi

Top 13%
×1story
+6ft-20ft

Overall

3479

Females

314

F18-39

314

40K→25.2M

24.9 - 25.2 mi

Top 12%
×1story
+13ft-16ft

Overall

3264

Females

294

F18-39

294

25.2M→Finish

25.2 - 26.2 mi

Top 15%
×2stories
+22ft-21ft

Overall

4030

Females

466

F18-39

466

Passing Analysis

Category:
Athletes Passed
1094
Passed By
3634
Net Change
-2540
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2994
5K → 10K145177-32#2994#3026
10K → 15K47157-110#3026#3136
15K → 20K8763-755#3136#3891
20K → Half1821-3#3891#3894
Half → 25K40198-158#3894#4052
25K → 30K22632-610#4052#4662
30K → 20M21638-1636#4662#6298
20M → 21M1547+147#6298#6151
21M → 35K5020+30#6151#6121
35K → 23M1457+138#6121#5983
23M → 24M1403+137#5983#5846
24M → 40K1232+121#5846#5725
40K → 25.2M681+67#5725#5658
25.2M → Finish1328+124#5658#5534
TOTALS10943634-2540
📊

Passing Visuals

Category:
Loading...

🔥Passing Intensity

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