Boston Marathon logo
BOSTON MARATHON 2023

Alexis Guttilla

Bib: 15695•F

CO

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Top 32%
Gender (Female)
#0 / 11423
Top 13%
Division (F18-39)
#0 / 4884
Top 23%
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
7:24/mi
22:59
↑ 97↓ 3451.5%
10K· 6.21 mi
7:15/mi
45:30
↑ 79↓ 1380.4%
15K· 9.32 mi
7:22/mi
1:08:22
↑ 67↓ 78
20K· 12.43 mi
7:20/mi
1:31:09
↑ 106↓ 860.1%
Half· 13.11 mi
7:20/mi
1:36:09
↑ 19↓ 370.5%
25K· 15.53 mi
7:15/mi
1:53:44
↑ 66↓ 880.2%
30K· 18.64 mi
7:27/mi
2:16:54
↑ 181↓ 1480.2%
20M
7:24/mi
2:26:57
↑ 64↓ 500.2%
21M
7:49/mi
2:34:46
↑ 106↓ 241.6%
35K· 21.75 mi
7:36/mi
2:40:27
↑ 17↓ 861.7%
23M
8:17/mi
2:50:49
↑ 23↓ 630.6%
24M
8:01/mi
2:58:50
↓ 821.3%
40K· 24.85 mi
8:44/mi
3:06:18
↓ 200.3%
25.2M
9:52/mi
3:09:42
↑ 13↓ 160.2%
Finish· 26.22 mi
7:49/mi
3:17:40
↑ 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
Time1:36:09
Pace7:20 /mi
2nd Half
Distance13.11 mi
Time1:41:31
Pace7:45 /mi
📊Positive Split: 5.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:53:0922:597:2422:59
7:24
-
10K
6.21 mi11:15:4045:307:1922:31
7:15
-0:09
15K
9.32 mi11:38:321:08:227:2022:52
7:22
+0:07
20K
12.43 mi12:01:191:31:097:2022:47
7:20
-0:02
Half
13.11 mi12:06:191:36:097:205:00
7:20
0:00
25K
15.53 mi12:23:541:53:447:1917:35
7:15
-0:05
30K
18.64 mi12:47:042:16:547:2123:10
7:27
+0:12
20M
20.00 mi12:57:072:26:577:2110:03
7:24
-0:03
21M
21.00 mi13:04:562:34:467:227:49
7:49
+0:25
35K
21.75 mi13:10:372:40:277:235:41
7:36
-0:13
23M
23.00 mi13:20:592:50:497:2610:22
8:17
+0:41
24M
24.00 mi13:29:002:58:507:278:01
8:01
-0:16
40K
24.85 mi13:36:283:06:187:307:28
8:44
+0:43
25.2M
25.20 mi13:39:523:09:427:323:24
9:52
+1:08
Finish
26.22 mi13:47:503:17:407:337:58
7:49
-2:03

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

7:15 /mi

Average Pace

7:33 /mi

Slowest Pace

9:52 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

0:00

0% of race

Time at Steady Pace

2:32:38

77% of race

Time at Slower Pace

45:02

23% of race

Average Pace: 7:32 /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 mi10:53:0922:597:2422:59
7:24
#8821
10K
6.21 mi11:15:4045:307:1922:31
7:15
#8603
15K
9.32 mi11:38:321:08:227:2022:52
7:22
#8732
20K
12.43 mi12:01:191:31:097:2022:47
7:20
#8510
Half
13.11 mi12:06:191:36:097:205:00
7:20
#8531
25K
15.53 mi12:23:541:53:447:1917:35
7:15
#8236
30K
18.64 mi12:47:042:16:547:2123:10
7:27
#7974
20M
20.00 mi12:57:072:26:577:2110:03
7:24
#7791
21M
21.00 mi13:04:562:34:467:227:49
7:49
#7658
35K
21.75 mi13:10:372:40:277:235:41
7:36
#7692
23M
23.00 mi13:20:592:50:497:2610:22
8:17
#7905
24M
24.00 mi13:29:002:58:507:278:01
8:01
#8031
40K
24.85 mi13:36:283:06:187:307:28
8:44
#8278
25.2M
25.20 mi13:39:523:09:427:323:24
9:52
#8432
Finish
26.22 mi13:47:503:17:407:337:58
7:49
#8518
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi8821132513259029(Top 34%)1461(Top 13%)1461(Top 30%)
10K6.21 mi3.10 mi8603+2181258+671258+678485(Top 32%)1225(Top 11%)1225(Top 25%)
15K9.32 mi3.11 mi8732-1291320-621320-629029(Top 34%)1461(Top 13%)1461(Top 30%)
20K12.43 mi3.11 mi8510+2221240+801240+808051(Top 30%)1123(Top 10%)1123(Top 23%)
Half13.11 mi0.68 mi8531-211244-41244-48884(Top 33%)1434(Top 13%)1434(Top 29%)
25K15.53 mi2.42 mi8236+2951163+811163+816982(Top 26%)838(Top 7%)838(Top 17%)
30K18.64 mi3.11 mi7974+2621107+561107+566953(Top 26%)919(Top 8%)919(Top 19%)
20M20.00 mi1.36 mi7791+1831055+521055+526188(Top 23%)755(Top 7%)755(Top 15%)
21M21.00 mi1.00 mi7658+1331032+231032+236293(Top 24%)885(Top 8%)885(Top 18%)
35K21.75 mi0.75 mi7692-341044-121044-129271(Top 35%)2024(Top 18%)2024(Top 41%)
23M23.00 mi1.25 mi7905-2131150-1061150-10611745(Top 44%)3367(Top 29%)3367(Top 69%)
24M24.00 mi1.00 mi8031-1261214-641214-6411360(Top 43%)3255(Top 28%)3255(Top 67%)
40K24.85 mi0.85 mi8278-2471331-1171331-11714721(Top 55%)5134(Top 45%)5134(Top 105%)
25.2M25.20 mi0.35 mi8432-1541398-671398-6716804(Top 63%)6295(Top 55%)6295(Top 129%)
Finish26.22 mi1.02 mi8518-861447-491447-4910805(Top 41%)3079(Top 27%)3079(Top 63%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 34%
×21story building
+97ft-345ft

Overall

9029

Females

1461

F18-39

1461

5K→10K

3.1 - 6.2 mi

Top 32%
×5story building
+79ft-138ft

Overall

8485

Females

1225

F18-39

1225

10K→15K

6.2 - 9.3 mi

Top 34%
×3story building
+67ft-78ft

Overall

9029

Females

1461

F18-39

1461

15K→20K

9.3 - 12.4 mi

Top 30%
×5story building
+106ft-86ft

Overall

8051

Females

1123

F18-39

1123

20K→Half

12.4 - 13.1 mi

Top 33%
×2story building
+19ft-37ft

Overall

8884

Females

1434

F18-39

1434

Half→25K

13.1 - 15.5 mi

Top 26%
×4story building
+66ft-88ft

Overall

6982

Females

838

F18-39

838

25K→30K

15.5 - 18.6 mi

Top 26%
×9story building
+181ft-148ft

Overall

6953

Females

919

F18-39

919

30K→20M

18.6 - 20.0 mi

Top 23%
×5story building
+64ft-50ft

Overall

6188

Females

755

F18-39

755

20M→21M

20.0 - 21.0 mi

Top 24%
×8story building
+106ft-24ft

Overall

6293

Females

885

F18-39

885

21M→35K

21.0 - 21.8 mi

Top 35%
×7story building
+17ft-86ft

Overall

9271

Females

2024

F18-39

2024

35K→23M

21.8 - 23.0 mi

Top 44%
×5story building
+23ft-63ft

Overall

11745

Females

3367

F18-39

3367

23M→24M

23.0 - 24.0 mi

Top 43%
×6story building
+12ft-82ft

Overall

11360

Females

3255

F18-39

3255

24M→40K

24.0 - 24.9 mi

Top 55%
×1story
+6ft-20ft

Overall

14721

Females

5134

F18-39

5134

40K→25.2M

24.9 - 25.2 mi

Top 63%
×1story
+13ft-16ft

Overall

16804

Females

6295

F18-39

6295

25.2M→Finish

25.2 - 26.2 mi

Top 41%
×2story building
+22ft-21ft

Overall

10805

Females

3079

F18-39

3079

Passing Analysis

Category:
Athletes Passed
1836
Passed By
1533
Net Change
+303
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8821
5K → 10K369151+218#8821#8603
10K → 15K103232-129#8603#8732
15K → 20K25634+222#8732#8510
20K → Half2041-21#8510#8531
Half → 25K3016+295#8531#8236
25K → 30K28725+262#8236#7974
30K → 20M1918+183#7974#7791
20M → 21M14411+133#7791#7658
21M → 35K2660-34#7658#7692
35K → 23M38251-213#7692#7905
23M → 24M36162-126#7905#8031
24M → 40K19266-247#8031#8278
40K → 25.2M6160-154#8278#8432
25.2M → Finish40126-86#8432#8518
TOTALS18361533+303
📊

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