Boston Marathon logo
BOSTON MARATHON 2023

Maggie Wolfson

Bib: 17855•F

IL

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Top 40%
Division (F40-44)
#0 / 1878
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:55
Rank: #14174
Start → 5K
24:55 | 8:01/mi
10K· 6.21 mi
50:01
Rank: #14746 (-572)
5K → 10K
25:06 | 8:05/mi
15K· 9.32 mi
1:15:12
Rank: #14890 (-144)
10K → 15K
25:11 | 8:06/mi
20K· 12.43 mi
1:41:01
Rank: #15090 (-200)
15K → 20K
25:49 | 8:19/mi
Half· 13.11 mi
1:46:38
Rank: #15139 (-49)
20K → Half
5:37 | 8:14/mi
25K· 15.53 mi
2:07:10
Rank: #15257 (-118)
Half → 25K
20:32 | 8:28/mi
30K· 18.64 mi
2:34:43
Rank: #15481 (-224)
25K → 30K
27:33 | 8:52/mi
20M
2:47:09
Rank: #15606 (-125)
30K → 20M
12:26 | 9:09/mi
21M
2:57:11
Rank: #15782 (-176)
20M → 21M
10:02 | 10:02/mi
35K· 21.75 mi
3:03:56
Rank: #15845 (-63)
21M → 35K
6:45 | 9:01/mi
23M
3:15:38
Rank: #15997 (-152)
35K → 23M
11:42 | 9:21/mi
24M
3:24:48
Rank: #16080 (-83)
23M → 24M
9:10 | 9:10/mi
40K· 24.85 mi
3:32:54
Rank: #16171 (-91)
24M → 40K
8:06 | 9:28/mi
25.2M
3:36:31
Rank: #16232 (-61)
40K → 25.2M
3:37 | 10:29/mi
Finish· 26.22 mi
3:46:13
Rank: #16439 (-207)
25.2M → Finish
9:42 | 9:31/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
Time1:46:38
Pace8:08 /mi
2nd Half
Distance13.11 mi
Time1:59:35
Pace9:07 /mi
📊Positive Split: 12.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:15:3024:558:0124:55
8:01
-
10K
6.21 mi11:40:3650:018:0325:06
8:05
+0:04
15K
9.32 mi12:05:471:15:128:0425:11
8:06
+0:01
20K
12.43 mi12:31:361:41:018:0825:49
8:19
+0:13
Half
13.11 mi12:37:131:46:388:085:37
8:14
-0:05
25K
15.53 mi12:57:452:07:108:1120:32
8:28
+0:14
30K
18.64 mi13:25:182:34:438:1827:33
8:52
+0:24
20M
20.00 mi13:37:442:47:098:2112:26
9:09
+0:17
21M
21.00 mi13:47:462:57:118:2610:02
10:02
+0:53
35K
21.75 mi13:54:313:03:568:276:45
9:01
-1:01
23M
23.00 mi14:06:133:15:388:3011:42
9:21
+0:20
24M
24.00 mi14:15:233:24:488:329:10
9:10
-0:11
40K
24.85 mi14:23:293:32:548:348:06
9:28
+0:18
25.2M
25.20 mi14:27:063:36:318:363:37
10:29
+1:01
Finish
26.22 mi14:36:483:46:138:389:42
9:31
-0:58

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

8:01 /mi

Average Pace

8:38 /mi

Slowest Pace

10:29 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:07:10

56% of race

Time at Steady Pace

1:07:36

30% of race

Time at Slower Pace

31:27

14% of race

Average Pace: 8:38 /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 mi11:15:3024:558:0124:55
8:01
#14174
10K
6.21 mi11:40:3650:018:0325:06
8:05
#14746
15K
9.32 mi12:05:471:15:128:0425:11
8:06
#14890
20K
12.43 mi12:31:361:41:018:0825:49
8:19
#15090
Half
13.11 mi12:37:131:46:388:085:37
8:14
#15139
25K
15.53 mi12:57:452:07:108:1120:32
8:28
#15257
30K
18.64 mi13:25:182:34:438:1827:33
8:52
#15481
20M
20.00 mi13:37:442:47:098:2112:26
9:09
#15606
21M
21.00 mi13:47:462:57:118:2610:02
10:02
#15782
35K
21.75 mi13:54:313:03:568:276:45
9:01
#15845
23M
23.00 mi14:06:133:15:388:3011:42
9:21
#15997
24M
24.00 mi14:15:233:24:488:329:10
9:10
#16080
40K
24.85 mi14:23:293:32:548:348:06
9:28
#16171
25.2M
25.20 mi14:27:063:36:318:363:37
10:29
#16232
Finish
26.22 mi14:36:483:46:138:389:42
9:31
#16439
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi141744135413515225(Top 57%)4811(Top 42%)4811(Top 256%)
10K6.21 mi3.10 mi14746-5724497-3624497-36215383(Top 58%)4904(Top 43%)4904(Top 261%)
15K9.32 mi3.11 mi14890-1444594-974594-9715225(Top 57%)4811(Top 42%)4811(Top 256%)
20K12.43 mi3.11 mi15090-2004742-1484742-14815673(Top 59%)5145(Top 45%)5145(Top 274%)
Half13.11 mi0.68 mi15139-494770-284770-2816095(Top 60%)5363(Top 47%)5363(Top 286%)
25K15.53 mi2.42 mi15257-1184871-1014871-10116026(Top 60%)5460(Top 48%)5460(Top 291%)
30K18.64 mi3.11 mi15481-2245061-1905061-19016474(Top 62%)5772(Top 51%)5772(Top 307%)
20M20.00 mi1.36 mi15606-1255157-965157-9617317(Top 65%)6344(Top 56%)6344(Top 338%)
21M21.00 mi1.00 mi15782-1765290-1335290-13318150(Top 68%)6843(Top 60%)6843(Top 364%)
35K21.75 mi0.75 mi15845-635341-515341-5118006(Top 68%)6837(Top 60%)6837(Top 364%)
23M23.00 mi1.25 mi15997-1525456-1155456-11517714(Top 67%)6695(Top 59%)6695(Top 356%)
24M24.00 mi1.00 mi16080-835514-585514-5817942(Top 67%)6866(Top 60%)6866(Top 366%)
40K24.85 mi0.85 mi16171-915574-605574-6018253(Top 69%)7073(Top 62%)7073(Top 377%)
25.2M25.20 mi0.35 mi16232-615619-455619-4519073(Top 72%)7534(Top 66%)7534(Top 401%)
Finish26.22 mi1.02 mi16439-2075747-1285747-12820197(Top 76%)8114(Top 71%)8114(Top 432%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 57%
×21stories
+97ft-345ft

Overall

15225

Females

4811

F40-44

4811

5K→10K

3.1 - 6.2 mi

Top 58%
×5stories
+79ft-138ft

Overall

15383

Females

4904

F40-44

4904

10K→15K

6.2 - 9.3 mi

Top 57%
×3stories
+67ft-78ft

Overall

15225

Females

4811

F40-44

4811

15K→20K

9.3 - 12.4 mi

Top 59%
×5stories
+106ft-86ft

Overall

15673

Females

5145

F40-44

5145

20K→Half

12.4 - 13.1 mi

Top 60%
×2stories
+19ft-37ft

Overall

16095

Females

5363

F40-44

5363

Half→25K

13.1 - 15.5 mi

Top 60%
×4stories
+66ft-88ft

Overall

16026

Females

5460

F40-44

5460

25K→30K

15.5 - 18.6 mi

Top 62%
×9stories
+181ft-148ft

Overall

16474

Females

5772

F40-44

5772

30K→20M

18.6 - 20.0 mi

Top 65%
×5stories
+64ft-50ft

Overall

17317

Females

6344

F40-44

6344

20M→21M

20.0 - 21.0 mi

Top 68%
×8stories
+106ft-24ft

Overall

18150

Females

6843

F40-44

6843

21M→35K

21.0 - 21.8 mi

Top 68%
×7stories
+17ft-86ft

Overall

18006

Females

6837

F40-44

6837

35K→23M

21.8 - 23.0 mi

Top 67%
×5stories
+23ft-63ft

Overall

17714

Females

6695

F40-44

6695

23M→24M

23.0 - 24.0 mi

Top 67%
×6stories
+12ft-82ft

Overall

17942

Females

6866

F40-44

6866

24M→40K

24.0 - 24.9 mi

Top 69%
×1story
+6ft-20ft

Overall

18253

Females

7073

F40-44

7073

40K→25.2M

24.9 - 25.2 mi

Top 72%
×1story
+13ft-16ft

Overall

19073

Females

7534

F40-44

7534

25.2M→Finish

25.2 - 26.2 mi

Top 76%
×2stories
+22ft-21ft

Overall

20197

Females

8114

F40-44

8114

Passing Analysis

Category:
Athletes Passed
868
Passed By
3133
Net Change
-2265
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14174
5K → 10K101673-572#14174#14746
10K → 15K133277-144#14746#14890
15K → 20K127327-200#14890#15090
20K → Half2473-49#15090#15139
Half → 25K96214-118#15139#15257
25K → 30K116340-224#15257#15481
30K → 20M52177-125#15481#15606
20M → 21M41217-176#15606#15782
21M → 35K2790-63#15782#15845
35K → 23M46198-152#15845#15997
23M → 24M44127-83#15997#16080
24M → 40K34125-91#16080#16171
40K → 25.2M1172-61#16171#16232
25.2M → Finish16223-207#16232#16439
TOTALS8683133-2265
📊

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