Boston Marathon logo
BOSTON MARATHON 2025

Ericka Emerson

Bib: 21610•F

MA

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 46%
Masters (Masters Women)
#0 / 6759
Top 33%
Division (F50-54)
#0 / 1303
Top 26%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:44
Rank: #18609
Start → 5K
25:44 | 8:17/mi
10K· 6.21 mi
51:22
Rank: #18420 (+189)
5K → 10K
25:38 | 8:15/mi
15K· 9.32 mi
1:17:12
Rank: #18297 (+123)
10K → 15K
25:50 | 8:19/mi
20K· 12.43 mi
1:43:47
Rank: #18321 (-24)
15K → 20K
26:35 | 8:33/mi
Half· 13.11 mi
1:49:16
Rank: #18201 (+120)
20K → Half
5:29 | 8:02/mi
25K· 15.53 mi
2:09:34
Rank: #17865 (+336)
Half → 25K
20:18 | 8:22/mi
30K· 18.64 mi
2:36:33
Rank: #17450 (+415)
25K → 30K
26:59 | 8:41/mi
20M
2:48:16
Rank: #17216 (+234)
30K → 20M
11:43 | 8:37/mi
21M
2:57:37
Rank: #17079 (+137)
20M → 21M
9:21 | 9:21/mi
35K· 21.75 mi
3:03:41
Rank: #16908 (+171)
21M → 35K
6:04 | 8:07/mi
23M
3:14:11
Rank: #16630 (+278)
35K → 23M
10:30 | 8:23/mi
24M
3:22:25
Rank: #16442 (+188)
23M → 24M
8:14 | 8:14/mi
40K· 24.85 mi
3:29:35
Rank: #16290 (+152)
24M → 40K
7:10 | 8:23/mi
25.2M
3:33:05
Rank: #16310 (-20)
40K → 25.2M
3:30 | 10:09/mi
Finish· 26.22 mi
3:41:37
Rank: #16279 (+31)
25.2M → Finish
8:32 | 8:22/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
Time1:49:16
Pace8:20 /mi
2nd Half
Distance13.11 mi
Time1:52:21
Pace8:34 /mi
📊Positive Split: 2.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:23:1125:448:1725:44
8:17
-
10K
6.21 mi11:48:4951:228:1625:38
8:15
-0:02
15K
9.32 mi12:14:391:17:128:1725:50
8:19
+0:04
20K
12.43 mi12:41:141:43:478:2126:35
8:33
+0:14
Half
13.11 mi12:46:431:49:168:205:29
8:02
-0:31
25K
15.53 mi13:07:012:09:348:2020:18
8:22
+0:20
30K
18.64 mi13:34:002:36:338:2426:59
8:41
+0:19
20M
20.00 mi13:45:432:48:168:2511:43
8:37
-0:04
21M
21.00 mi13:55:042:57:378:279:21
9:21
+0:44
35K
21.75 mi14:01:083:03:418:276:04
8:07
-1:14
23M
23.00 mi14:11:383:14:118:2710:30
8:23
+0:16
24M
24.00 mi14:19:523:22:258:268:14
8:14
-0:09
40K
24.85 mi14:27:023:29:358:267:10
8:23
+0:09
25.2M
25.20 mi14:30:323:33:058:273:30
10:09
+1:46
Finish
26.22 mi14:39:043:41:378:288:32
8:22
-1:47

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

8:02 /mi

Average Pace

8:28 /mi

Slowest Pace

10:09 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

5:29

2% of race

Time at Steady Pace

2:56:18

80% of race

Time at Slower Pace

39:50

18% of race

Average Pace: 8:27 /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 mi11:23:1125:448:1725:44
8:17
#18609
10K
6.21 mi11:48:4951:228:1625:38
8:15
#18420
15K
9.32 mi12:14:391:17:128:1725:50
8:19
#18297
20K
12.43 mi12:41:141:43:478:2126:35
8:33
#18321
Half
13.11 mi12:46:431:49:168:205:29
8:02
#18201
25K
15.53 mi13:07:012:09:348:2020:18
8:22
#17865
30K
18.64 mi13:34:002:36:338:2426:59
8:41
#17450
20M
20.00 mi13:45:432:48:168:2511:43
8:37
#17216
21M
21.00 mi13:55:042:57:378:279:21
9:21
#17079
35K
21.75 mi14:01:083:03:418:276:04
8:07
#16908
23M
23.00 mi14:11:383:14:118:2710:30
8:23
#16630
24M
24.00 mi14:19:523:22:258:268:14
8:14
#16442
40K
24.85 mi14:27:023:29:358:267:10
8:23
#16290
25.2M
25.20 mi14:30:323:33:058:273:30
10:09
#16310
Finish
26.22 mi14:39:043:41:378:288:32
8:22
#16279
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi186096686668618167(Top 64%)6419(Top 52%)6419(Top 493%)
10K6.21 mi3.10 mi18420+1896567+1196567+11918231(Top 64%)6441(Top 53%)6441(Top 494%)
15K9.32 mi3.11 mi18297+1236504+636504+6318167(Top 64%)6419(Top 52%)6419(Top 493%)
20K12.43 mi3.11 mi18321-246523-196523-1918577(Top 65%)6665(Top 55%)6665(Top 512%)
Half13.11 mi0.68 mi18201+1206459+646459+6416255(Top 57%)5342(Top 44%)5342(Top 410%)
25K15.53 mi2.42 mi17865+3366278+1816278+18116398(Top 58%)5532(Top 45%)5532(Top 425%)
30K18.64 mi3.11 mi17450+4156087+1916087+19115913(Top 56%)5414(Top 44%)5414(Top 416%)
20M20.00 mi1.36 mi17216+2345978+1095978+10914588(Top 51%)4829(Top 39%)4829(Top 371%)
21M21.00 mi1.00 mi17079+1375927+515927+5115424(Top 54%)5407(Top 44%)5407(Top 415%)
35K21.75 mi0.75 mi16908+1715840+875840+8713064(Top 46%)4212(Top 34%)4212(Top 323%)
23M23.00 mi1.25 mi16630+2785716+1245716+12412629(Top 44%)4078(Top 33%)4078(Top 313%)
24M24.00 mi1.00 mi16442+1885634+825634+8212846(Top 45%)4246(Top 35%)4246(Top 326%)
40K24.85 mi0.85 mi16290+1525568+665568+6612742(Top 45%)4316(Top 35%)4316(Top 331%)
25.2M25.20 mi0.35 mi16310-205589-215589-2117705(Top 62%)6957(Top 57%)6957(Top 534%)
Finish26.22 mi1.02 mi16279+315590-15590-115414(Top 54%)5703(Top 47%)5703(Top 438%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 64%
×21stories
+97ft-345ft

Overall

18167

Females

6419

F50-54

6419

5K→10K

3.1 - 6.2 mi

Top 64%
×5stories
+79ft-138ft

Overall

18231

Females

6441

F50-54

6441

10K→15K

6.2 - 9.3 mi

Top 64%
×3stories
+67ft-78ft

Overall

18167

Females

6419

F50-54

6419

15K→20K

9.3 - 12.4 mi

Top 65%
×5stories
+106ft-86ft

Overall

18577

Females

6665

F50-54

6665

20K→Half

12.4 - 13.1 mi

Top 57%
×2stories
+19ft-37ft

Overall

16255

Females

5342

F50-54

5342

Half→25K

13.1 - 15.5 mi

Top 58%
×4stories
+66ft-88ft

Overall

16398

Females

5532

F50-54

5532

25K→30K

15.5 - 18.6 mi

Top 56%
×9stories
+181ft-148ft

Overall

15913

Females

5414

F50-54

5414

30K→20M

18.6 - 20.0 mi

Top 51%
×5stories
+64ft-50ft

Overall

14588

Females

4829

F50-54

4829

20M→21M

20.0 - 21.0 mi

Top 54%
×8stories
+106ft-24ft

Overall

15424

Females

5407

F50-54

5407

21M→35K

21.0 - 21.8 mi

Top 46%
×7stories
+17ft-86ft

Overall

13064

Females

4212

F50-54

4212

35K→23M

21.8 - 23.0 mi

Top 44%
×5stories
+23ft-63ft

Overall

12629

Females

4078

F50-54

4078

23M→24M

23.0 - 24.0 mi

Top 45%
×6stories
+12ft-82ft

Overall

12846

Females

4246

F50-54

4246

24M→40K

24.0 - 24.9 mi

Top 45%
×1story
+6ft-20ft

Overall

12742

Females

4316

F50-54

4316

40K→25.2M

24.9 - 25.2 mi

Top 62%
×1story
+13ft-16ft

Overall

17705

Females

6957

F50-54

6957

25.2M→Finish

25.2 - 26.2 mi

Top 54%
×2stories
+22ft-21ft

Overall

15414

Females

5703

F50-54

5703

Passing Analysis

Category:
Athletes Passed
3107
Passed By
777
Net Change
+2330
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18609
5K → 10K366177+189#18609#18420
10K → 15K254131+123#18420#18297
15K → 20K185209-24#18297#18321
20K → Half1222+120#18321#18201
Half → 25K35923+336#18201#17865
25K → 30K46146+415#17865#17450
30K → 20M24915+234#17450#17216
20M → 21M17841+137#17216#17079
21M → 35K1798+171#17079#16908
35K → 23M29012+278#16908#16630
23M → 24M1979+188#16630#16442
24M → 40K1619+152#16442#16290
40K → 25.2M2040-20#16290#16310
25.2M → Finish8655+31#16310#16279
TOTALS3107777+2330
📊

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