Boston Marathon logo
BOSTON MARATHON 2023

Melissa Fredericks

Bib: 25513•F

NY

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

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
31:18
Rank: #23617
Start → 5K
31:18 | 10:04/mi
10K· 6.21 mi
1:02:07
Rank: #23617
5K → 10K
30:49 | 9:55/mi
15K· 9.32 mi
1:35:01
Rank: #23995 (-378)
10K → 15K
32:54 | 10:35/mi
20K· 12.43 mi
2:07:07
Rank: #23869 (+126)
15K → 20K
32:06 | 10:20/mi
Half· 13.11 mi
2:13:54
Rank: #23826 (+43)
20K → Half
6:47 | 9:57/mi
25K· 15.53 mi
2:39:25
Rank: #23702 (+124)
Half → 25K
25:31 | 10:31/mi
30K· 18.64 mi
3:12:59
Rank: #23529 (+173)
25K → 30K
33:34 | 10:48/mi
20M
3:27:43
Rank: #23455 (+74)
30K → 20M
14:44 | 10:51/mi
21M
3:40:28
Rank: #23485 (-30)
20M → 21M
12:45 | 12:45/mi
35K· 21.75 mi
3:48:03
Rank: #23430 (+55)
21M → 35K
7:35 | 10:08/mi
23M
4:01:17
Rank: #23314 (+116)
35K → 23M
13:14 | 10:34/mi
24M
4:11:56
Rank: #23284 (+30)
23M → 24M
10:39 | 10:39/mi
40K· 24.85 mi
4:20:45
Rank: #23189 (+95)
24M → 40K
8:49 | 10:19/mi
25.2M
4:24:51
Rank: #23177 (+12)
40K → 25.2M
4:06 | 11:53/mi
Finish· 26.22 mi
4:34:55
Rank: #23108 (+69)
25.2M → Finish
10:04 | 9:53/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
Time2:13:54
Pace10:13 /mi
2nd Half
Distance13.11 mi
Time2:21:01
Pace10:45 /mi
📊Positive Split: 5.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:47:2731:1810:0431:18
10:04
-
10K
6.21 mi12:18:161:02:0710:0030:49
9:55
-0:09
15K
9.32 mi12:51:101:35:0110:1232:54
10:35
+0:40
20K
12.43 mi13:23:162:07:0710:1432:06
10:20
-0:15
Half
13.11 mi13:30:032:13:5410:136:47
9:57
-0:23
25K
15.53 mi13:55:342:39:2510:1625:31
10:31
+0:34
30K
18.64 mi14:29:083:12:5910:2133:34
10:48
+0:17
20M
20.00 mi14:43:523:27:4310:2314:44
10:51
+0:03
21M
21.00 mi14:56:373:40:2810:3012:45
12:45
+1:54
35K
21.75 mi15:04:123:48:0310:297:35
10:08
-2:37
23M
23.00 mi15:17:264:01:1710:2913:14
10:34
+0:26
24M
24.00 mi15:28:054:11:5610:3010:39
10:39
+0:05
40K
24.85 mi15:36:544:20:4510:298:49
10:19
-0:20
25.2M
25.20 mi15:41:004:24:5110:314:06
11:53
+1:34
Finish
26.22 mi15:51:044:34:5510:3010:04
9:53
-2:00

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

9:53 /mi

Average Pace

10:30 /mi

Slowest Pace

12:45 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:26:33

31% of race

Time at Steady Pace

2:51:31

62% of race

Time at Slower Pace

16:51

6% of race

Average Pace: 10:29 /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 mi11:47:2731:1810:0431:18
10:04
#23617
10K
6.21 mi12:18:161:02:0710:0030:49
9:55
#23617
15K
9.32 mi12:51:101:35:0110:1232:54
10:35
#23995
20K
12.43 mi13:23:162:07:0710:1432:06
10:20
#23869
Half
13.11 mi13:30:032:13:5410:136:47
9:57
#23826
25K
15.53 mi13:55:342:39:2510:1625:31
10:31
#23702
30K
18.64 mi14:29:083:12:5910:2133:34
10:48
#23529
20M
20.00 mi14:43:523:27:4310:2314:44
10:51
#23455
21M
21.00 mi14:56:373:40:2810:3012:45
12:45
#23485
35K
21.75 mi15:04:123:48:0310:297:35
10:08
#23430
23M
23.00 mi15:17:264:01:1710:2913:14
10:34
#23314
24M
24.00 mi15:28:054:11:5610:3010:39
10:39
#23284
40K
24.85 mi15:36:544:20:4510:298:49
10:19
#23189
25.2M
25.20 mi15:41:004:24:5110:314:06
11:53
#23177
Finish
26.22 mi15:51:044:34:5510:3010:04
9:53
#23108
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi236179710971024611(Top 92%)10239(Top 90%)10239(Top 564%)
10K6.21 mi3.10 mi236179686+249686+2423531(Top 88%)9643(Top 84%)9643(Top 531%)
15K9.32 mi3.11 mi23995-3789887-2019887-20124611(Top 92%)10239(Top 90%)10239(Top 564%)
20K12.43 mi3.11 mi23869+1269815+729815+7223531(Top 88%)9648(Top 84%)9648(Top 531%)
Half13.11 mi0.68 mi23826+439795+209795+2023178(Top 87%)9457(Top 83%)9457(Top 520%)
25K15.53 mi2.42 mi23702+1249739+569739+5623242(Top 87%)9518(Top 83%)9518(Top 524%)
30K18.64 mi3.11 mi23529+1739660+799660+7922806(Top 86%)9356(Top 82%)9356(Top 515%)
20M20.00 mi1.36 mi23455+749636+249636+2422421(Top 84%)9210(Top 81%)9210(Top 507%)
21M21.00 mi1.00 mi23485-309653-179653-1723767(Top 89%)9965(Top 87%)9965(Top 548%)
35K21.75 mi0.75 mi23430+559631+229631+2221654(Top 81%)8860(Top 78%)8860(Top 488%)
23M23.00 mi1.25 mi23314+1169588+439588+4321484(Top 81%)8785(Top 77%)8785(Top 483%)
24M24.00 mi1.00 mi23284+309571+179571+1722357(Top 84%)9294(Top 81%)9294(Top 512%)
40K24.85 mi0.85 mi23189+959539+329539+3220796(Top 78%)8493(Top 74%)8493(Top 467%)
25.2M25.20 mi0.35 mi23177+129535+49535+422320(Top 84%)9298(Top 81%)9298(Top 512%)
Finish26.22 mi1.02 mi23108+699505+309505+3021435(Top 81%)8810(Top 77%)8810(Top 485%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 92%
×21stories
+97ft-345ft

Overall

24611

Females

10239

F45-49

10239

5K→10K

3.1 - 6.2 mi

Top 88%
×5stories
+79ft-138ft

Overall

23531

Females

9643

F45-49

9643

10K→15K

6.2 - 9.3 mi

Top 92%
×3stories
+67ft-78ft

Overall

24611

Females

10239

F45-49

10239

15K→20K

9.3 - 12.4 mi

Top 88%
×5stories
+106ft-86ft

Overall

23531

Females

9648

F45-49

9648

20K→Half

12.4 - 13.1 mi

Top 87%
×2stories
+19ft-37ft

Overall

23178

Females

9457

F45-49

9457

Half→25K

13.1 - 15.5 mi

Top 87%
×4stories
+66ft-88ft

Overall

23242

Females

9518

F45-49

9518

25K→30K

15.5 - 18.6 mi

Top 86%
×9stories
+181ft-148ft

Overall

22806

Females

9356

F45-49

9356

30K→20M

18.6 - 20.0 mi

Top 84%
×5stories
+64ft-50ft

Overall

22421

Females

9210

F45-49

9210

20M→21M

20.0 - 21.0 mi

Top 89%
×8stories
+106ft-24ft

Overall

23767

Females

9965

F45-49

9965

21M→35K

21.0 - 21.8 mi

Top 81%
×7stories
+17ft-86ft

Overall

21654

Females

8860

F45-49

8860

35K→23M

21.8 - 23.0 mi

Top 81%
×5stories
+23ft-63ft

Overall

21484

Females

8785

F45-49

8785

23M→24M

23.0 - 24.0 mi

Top 84%
×6stories
+12ft-82ft

Overall

22357

Females

9294

F45-49

9294

24M→40K

24.0 - 24.9 mi

Top 78%
×1story
+6ft-20ft

Overall

20796

Females

8493

F45-49

8493

40K→25.2M

24.9 - 25.2 mi

Top 84%
×1story
+13ft-16ft

Overall

22320

Females

9298

F45-49

9298

25.2M→Finish

25.2 - 26.2 mi

Top 81%
×2stories
+22ft-21ft

Overall

21435

Females

8810

F45-49

8810

Passing Analysis

Category:
Athletes Passed
1356
Passed By
847
Net Change
+509
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#23617
5K → 10K2062060#23617#23617
10K → 15K25403-378#23617#23995
15K → 20K17852+126#23995#23869
20K → Half463+43#23869#23826
Half → 25K15531+124#23826#23702
25K → 30K19522+173#23702#23529
30K → 20M9218+74#23529#23455
20M → 21M2757-30#23455#23485
21M → 35K605+55#23485#23430
35K → 23M1215+116#23430#23314
23M → 24M4818+30#23314#23284
24M → 40K1049+95#23284#23189
40K → 25.2M219+12#23189#23177
25.2M → Finish789+69#23177#23108
TOTALS1356847+509
📊

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