Boston Marathon logo
BOSTON MARATHON 2023

Maria Giron

Bib: 14846•F

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Top 34%
Gender (Female)
#0 / 11423
Top 14%
Masters (Masters Women)
#0 / 6539
Top 5%
Division (F45-49)
#0 / 1817
Top 5%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:32
Rank: #10308
Start → 5K
23:32 | 7:34/mi
10K· 6.21 mi
45:59
Rank: #9189 (+1119)
5K → 10K
22:27 | 7:14/mi
15K· 9.32 mi
1:08:45
Rank: #9024 (+165)
10K → 15K
22:46 | 7:20/mi
20K· 12.43 mi
1:31:37
Rank: #8783 (+241)
15K → 20K
22:52 | 7:22/mi
Half· 13.11 mi
1:36:29
Rank: #8706 (+77)
20K → Half
4:52 | 7:08/mi
25K· 15.53 mi
1:54:23
Rank: #8544 (+162)
Half → 25K
17:54 | 7:23/mi
30K· 18.64 mi
2:18:09
Rank: #8445 (+99)
25K → 30K
23:46 | 7:39/mi
20M
2:28:51
Rank: #8502 (-57)
30K → 20M
10:42 | 7:52/mi
21M
2:37:16
Rank: #8564 (-62)
20M → 21M
8:25 | 8:25/mi
35K· 21.75 mi
2:42:51
Rank: #8539 (+25)
21M → 35K
5:35 | 7:28/mi
23M
2:52:53
Rank: #8595 (-56)
35K → 23M
10:02 | 8:01/mi
24M
3:00:40
Rank: #8629 (-34)
23M → 24M
7:47 | 7:47/mi
40K· 24.85 mi
3:07:42
Rank: #8715 (-86)
24M → 40K
7:02 | 8:14/mi
25.2M
3:10:49
Rank: #8766 (-51)
40K → 25.2M
3:07 | 9:02/mi
Finish· 26.22 mi
3:19:11
Rank: #8939 (-173)
25.2M → Finish
8:22 | 8:13/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
Time1:36:29
Pace7:22 /mi
2nd Half
Distance13.11 mi
Time1:42:42
Pace7:50 /mi
📊Positive Split: 6.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:52:1723:327:3423:32
7:34
-
10K
6.21 mi11:14:4445:597:2422:27
7:14
-0:20
15K
9.32 mi11:37:301:08:457:2322:46
7:20
+0:06
20K
12.43 mi12:00:221:31:377:2222:52
7:22
+0:02
Half
13.11 mi12:05:141:36:297:224:52
7:08
-0:14
25K
15.53 mi12:23:081:54:237:2217:54
7:23
+0:15
30K
18.64 mi12:46:542:18:097:2523:46
7:39
+0:16
20M
20.00 mi12:57:362:28:517:2710:42
7:52
+0:13
21M
21.00 mi13:06:012:37:167:298:25
8:25
+0:33
35K
21.75 mi13:11:362:42:517:295:35
7:28
-0:57
23M
23.00 mi13:21:382:52:537:3110:02
8:01
+0:33
24M
24.00 mi13:29:253:00:407:327:47
7:47
-0:14
40K
24.85 mi13:36:273:07:427:337:02
8:14
+0:27
25.2M
25.20 mi13:39:343:10:497:343:07
9:02
+0:48
Finish
26.22 mi13:47:563:19:117:368:22
8:13
-0:49

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

7:08 /mi

Average Pace

7:36 /mi

Slowest Pace

9:02 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:30:51

46% of race

Time at Steady Pace

1:11:22

36% of race

Time at Slower Pace

36:58

19% of race

Average Pace: 7:36 /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 mi10:52:1723:327:3423:32
7:34
#10308
10K
6.21 mi11:14:4445:597:2422:27
7:14
#9189
15K
9.32 mi11:37:301:08:457:2322:46
7:20
#9024
20K
12.43 mi12:00:221:31:377:2222:52
7:22
#8783
Half
13.11 mi12:05:141:36:297:224:52
7:08
#8706
25K
15.53 mi12:23:081:54:237:2217:54
7:23
#8544
30K
18.64 mi12:46:542:18:097:2523:46
7:39
#8445
20M
20.00 mi12:57:362:28:517:2710:42
7:52
#8502
21M
21.00 mi13:06:012:37:167:298:25
8:25
#8564
35K
21.75 mi13:11:362:42:517:295:35
7:28
#8539
23M
23.00 mi13:21:382:52:537:3110:02
8:01
#8595
24M
24.00 mi13:29:253:00:407:327:47
7:47
#8629
40K
24.85 mi13:36:273:07:427:337:02
8:14
#8715
25.2M
25.20 mi13:39:343:10:497:343:07
9:02
#8766
Finish
26.22 mi13:47:563:19:117:368:22
8:13
#8939
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi10308200020008805(Top 33%)1370(Top 12%)1370(Top 75%)
10K6.21 mi3.10 mi9189+11191489+5111489+5118313(Top 31%)1151(Top 10%)1151(Top 63%)
15K9.32 mi3.11 mi9024+1651435+541435+548805(Top 33%)1370(Top 12%)1370(Top 75%)
20K12.43 mi3.11 mi8783+2411346+891346+898238(Top 31%)1195(Top 10%)1195(Top 66%)
Half13.11 mi0.68 mi8706+771322+241322+247470(Top 28%)927(Top 8%)927(Top 51%)
25K15.53 mi2.42 mi8544+1621280+421280+427902(Top 30%)1160(Top 10%)1160(Top 64%)
30K18.64 mi3.11 mi8445+991282-21282-28307(Top 31%)1431(Top 13%)1431(Top 79%)
20M20.00 mi1.36 mi8502-571320-381320-389402(Top 35%)1970(Top 17%)1970(Top 108%)
21M21.00 mi1.00 mi8564-621362-421362-429973(Top 37%)2365(Top 21%)2365(Top 130%)
35K21.75 mi0.75 mi8539+251365-31365-38311(Top 31%)1613(Top 14%)1613(Top 89%)
23M23.00 mi1.25 mi8595-561408-431408-439845(Top 37%)2429(Top 21%)2429(Top 134%)
24M24.00 mi1.00 mi8629-341443-351443-359669(Top 36%)2418(Top 21%)2418(Top 133%)
40K24.85 mi0.85 mi8715-861501-581501-5811549(Top 43%)3427(Top 30%)3427(Top 189%)
25.2M25.20 mi0.35 mi8766-511538-371538-3712742(Top 48%)4075(Top 36%)4075(Top 224%)
Finish26.22 mi1.02 mi8939-1731614-761614-7613501(Top 51%)4456(Top 39%)4456(Top 245%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 33%
×21stories
+97ft-345ft

Overall

8805

Females

1370

F45-49

1370

5K→10K

3.1 - 6.2 mi

Top 31%
×5stories
+79ft-138ft

Overall

8313

Females

1151

F45-49

1151

10K→15K

6.2 - 9.3 mi

Top 33%
×3stories
+67ft-78ft

Overall

8805

Females

1370

F45-49

1370

15K→20K

9.3 - 12.4 mi

Top 31%
×5stories
+106ft-86ft

Overall

8238

Females

1195

F45-49

1195

20K→Half

12.4 - 13.1 mi

Top 28%
×2stories
+19ft-37ft

Overall

7470

Females

927

F45-49

927

Half→25K

13.1 - 15.5 mi

Top 30%
×4stories
+66ft-88ft

Overall

7902

Females

1160

F45-49

1160

25K→30K

15.5 - 18.6 mi

Top 31%
×9stories
+181ft-148ft

Overall

8307

Females

1431

F45-49

1431

30K→20M

18.6 - 20.0 mi

Top 35%
×5stories
+64ft-50ft

Overall

9402

Females

1970

F45-49

1970

20M→21M

20.0 - 21.0 mi

Top 37%
×8stories
+106ft-24ft

Overall

9973

Females

2365

F45-49

2365

21M→35K

21.0 - 21.8 mi

Top 31%
×7stories
+17ft-86ft

Overall

8311

Females

1613

F45-49

1613

35K→23M

21.8 - 23.0 mi

Top 37%
×5stories
+23ft-63ft

Overall

9845

Females

2429

F45-49

2429

23M→24M

23.0 - 24.0 mi

Top 36%
×6stories
+12ft-82ft

Overall

9669

Females

2418

F45-49

2418

24M→40K

24.0 - 24.9 mi

Top 43%
×1story
+6ft-20ft

Overall

11549

Females

3427

F45-49

3427

40K→25.2M

24.9 - 25.2 mi

Top 48%
×1story
+13ft-16ft

Overall

12742

Females

4075

F45-49

4075

25.2M→Finish

25.2 - 26.2 mi

Top 51%
×2stories
+22ft-21ft

Overall

13501

Females

4456

F45-49

4456

Passing Analysis

Category:
Athletes Passed
2492*
Passed By
1123
Net Change
+1369
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10308
5K → 10K1150*31+1119#10308#9189
10K → 15K24277+165#9189#9024
15K → 20K27029+241#9024#8783
20K → Half792+77#8783#8706
Half → 25K18119+162#8706#8544
25K → 30K213114+99#8544#8445
30K → 20M65122-57#8445#8502
20M → 21M53115-62#8502#8564
21M → 35K5126+25#8564#8539
35K → 23M68124-56#8539#8595
23M → 24M6094-34#8595#8629
24M → 40K32118-86#8629#8715
40K → 25.2M1768-51#8715#8766
25.2M → Finish11184-173#8766#8939
TOTALS2492*1123+1369

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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