Boston Marathon logo
BOSTON MARATHON 2023

Christopher Eiswerth

Bib: 1210•M

TX

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Top 6%
Gender (Male)
#0 / 15176
Top 10%
Masters (Masters Men)
#0 / 9891
Top 3%
Division (M40-44)
#0 / 2241
Top 8%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:21
Rank: #1200
Start → 5K
6:14/mi
19:21 split
10K· 6.21 mi
38:04
Rank: #1028 (+172)
5K → 10K
6:01/mi
18:43 split
15K· 9.32 mi
56:49
Rank: #950 (+78)
10K → 15K
6:02/mi
18:45 split
20K· 12.43 mi
1:15:48
Rank: #910 (+40)
15K → 20K
6:07/mi
18:59 split
Half· 13.11 mi
1:19:59
Rank: #920 (-10)
20K → Half
6:08/mi
4:11 split
25K· 15.53 mi
1:34:57
Rank: #905 (+15)
Half → 25K
6:10/mi
14:58 split
30K· 18.64 mi
1:54:53
Rank: #926 (-21)
25K → 30K
6:25/mi
19:56 split
20M
2:03:57
Rank: #970 (-44)
30K → 20M
6:40/mi
9:04 split
21M
2:11:40
Rank: #1093 (-123)
20M → 21M
7:43/mi
7:43 split
35K· 21.75 mi
2:16:27
Rank: #1104 (-11)
21M → 35K
6:24/mi
4:47 split
23M
2:25:32
Rank: #1244 (-140)
35K → 23M
7:15/mi
9:05 split
24M
2:32:32
Rank: #1340 (-96)
23M → 24M
7:00/mi
7:00 split
40K· 24.85 mi
2:38:50
Rank: #1439 (-99)
24M → 40K
7:22/mi
6:18 split
25.2M
2:41:34
Rank: #1495 (-56)
40K → 25.2M
7:56/mi
2:44 split
Finish· 26.22 mi
2:48:55
Rank: #1593 (-98)
25.2M → Finish
7:13/mi
7:21 split

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
Time1:19:59
Pace6:06 /mi
2nd Half
Distance13.11 mi
Time1:28:56
Pace6:47 /mi
📊Positive Split: 11.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:19:5219:216:1419:21
6:14
-
10K
6.21 mi10:38:3538:046:0818:43
6:01
-0:13
15K
9.32 mi10:57:2056:496:0618:45
6:02
+0:01
20K
12.43 mi11:16:191:15:486:0618:59
6:07
+0:05
Half
13.11 mi11:20:301:19:596:064:11
6:08
+0:01
25K
15.53 mi11:35:281:34:576:0714:58
6:10
+0:02
30K
18.64 mi11:55:241:54:536:1019:56
6:25
+0:15
20M
20.00 mi12:04:282:03:576:129:04
6:40
+0:15
21M
21.00 mi12:12:112:11:406:167:43
7:43
+1:03
35K
21.75 mi12:16:582:16:276:164:47
6:24
-1:19
23M
23.00 mi12:26:032:25:326:209:05
7:15
+0:51
24M
24.00 mi12:33:032:32:326:217:00
7:00
-0:15
40K
24.85 mi12:39:212:38:506:236:18
7:22
+0:22
25.2M
25.20 mi12:42:052:41:346:252:44
7:56
+0:34
Finish
26.22 mi12:49:262:48:556:277:21
7:13
-0:43

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

6:01 /mi

Average Pace

6:27 /mi

Slowest Pace

7:56 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

37:28

22% of race

Time at Steady Pace

1:31:16

54% of race

Time at Slower Pace

40:11

24% of race

Average Pace: 6:27 /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 mi10:19:5219:216:1419:21
6:14
#1200
10K
6.21 mi10:38:3538:046:0818:43
6:01
#1028
15K
9.32 mi10:57:2056:496:0618:45
6:02
#950
20K
12.43 mi11:16:191:15:486:0618:59
6:07
#910
Half
13.11 mi11:20:301:19:596:064:11
6:08
#920
25K
15.53 mi11:35:281:34:576:0714:58
6:10
#905
30K
18.64 mi11:55:241:54:536:1019:56
6:25
#926
20M
20.00 mi12:04:282:03:576:129:04
6:40
#970
21M
21.00 mi12:12:112:11:406:167:43
7:43
#1093
35K
21.75 mi12:16:582:16:276:164:47
6:24
#1104
23M
23.00 mi12:26:032:25:326:209:05
7:15
#1244
24M
24.00 mi12:33:032:32:326:217:00
7:00
#1340
40K
24.85 mi12:39:212:38:506:236:18
7:22
#1439
25.2M
25.20 mi12:42:052:41:346:252:44
7:56
#1495
Finish
26.22 mi12:49:262:48:556:277:21
7:13
#1593
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi120011371137800(Top 3%)754(Top 5%)754(Top 34%)
10K6.21 mi3.10 mi1028+172972+165972+165874(Top 3%)826(Top 5%)826(Top 37%)
15K9.32 mi3.11 mi950+78899+73899+73800(Top 3%)754(Top 5%)754(Top 34%)
20K12.43 mi3.11 mi910+40862+37862+37812(Top 3%)768(Top 5%)768(Top 34%)
Half13.11 mi0.68 mi920-10871-9871-91137(Top 4%)1086(Top 7%)1086(Top 48%)
25K15.53 mi2.42 mi905+15857+14857+14929(Top 3%)882(Top 6%)882(Top 39%)
30K18.64 mi3.11 mi926-21878-21878-211268(Top 5%)1210(Top 8%)1210(Top 54%)
20M20.00 mi1.36 mi970-44920-42920-422141(Top 8%)2036(Top 13%)2036(Top 91%)
21M21.00 mi1.00 mi1093-1231040-1201040-1205676(Top 21%)4948(Top 33%)4948(Top 221%)
35K21.75 mi0.75 mi1104-111051-111051-111928(Top 7%)1832(Top 12%)1832(Top 82%)
23M23.00 mi1.25 mi1244-1401187-1361187-1365035(Top 19%)4484(Top 30%)4484(Top 200%)
24M24.00 mi1.00 mi1340-961277-901277-904640(Top 17%)4154(Top 27%)4154(Top 185%)
40K24.85 mi0.85 mi1439-991373-961373-965821(Top 22%)4887(Top 32%)4887(Top 218%)
25.2M25.20 mi0.35 mi1495-561427-541427-545945(Top 22%)4876(Top 32%)4876(Top 218%)
Finish26.22 mi1.02 mi1593-981522-951522-956472(Top 24%)5223(Top 34%)5223(Top 233%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 3%
×21stories
+97ft-345ft

Overall

800

Males

754

M40-44

754

5K→10K

3.1 - 6.2 mi

Top 3%
×5stories
+79ft-138ft

Overall

874

Males

826

M40-44

826

10K→15K

6.2 - 9.3 mi

Top 3%
×3stories
+67ft-78ft

Overall

800

Males

754

M40-44

754

15K→20K

9.3 - 12.4 mi

Top 3%
×5stories
+106ft-86ft

Overall

812

Males

768

M40-44

768

20K→Half

12.4 - 13.1 mi

Top 4%
×2stories
+19ft-37ft

Overall

1137

Males

1086

M40-44

1086

Half→25K

13.1 - 15.5 mi

Top 3%
×4stories
+66ft-88ft

Overall

929

Males

882

M40-44

882

25K→30K

15.5 - 18.6 mi

Top 5%
×9stories
+181ft-148ft

Overall

1268

Males

1210

M40-44

1210

30K→20M

18.6 - 20.0 mi

Top 8%
×5stories
+64ft-50ft

Overall

2141

Males

2036

M40-44

2036

20M→21M

20.0 - 21.0 mi

Top 21%
×8stories
+106ft-24ft

Overall

5676

Males

4948

M40-44

4948

21M→35K

21.0 - 21.8 mi

Top 7%
×7stories
+17ft-86ft

Overall

1928

Males

1832

M40-44

1832

35K→23M

21.8 - 23.0 mi

Top 19%
×5stories
+23ft-63ft

Overall

5035

Males

4484

M40-44

4484

23M→24M

23.0 - 24.0 mi

Top 17%
×6stories
+12ft-82ft

Overall

4640

Males

4154

M40-44

4154

24M→40K

24.0 - 24.9 mi

Top 22%
×1story
+6ft-20ft

Overall

5821

Males

4887

M40-44

4887

40K→25.2M

24.9 - 25.2 mi

Top 22%
×1story
+13ft-16ft

Overall

5945

Males

4876

M40-44

4876

25.2M→Finish

25.2 - 26.2 mi

Top 24%
×2stories
+22ft-21ft

Overall

6472

Males

5223

M40-44

5223

Passing Analysis

Category:
Athletes Passed
407
Passed By
800
Net Change
-393
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1200
5K → 10K1819+172#1200#1028
10K → 15K835+78#1028#950
15K → 20K5313+40#950#910
20K → Half313-10#910#920
Half → 25K3318+15#920#905
25K → 30K2445-21#905#926
30K → 20M549-44#926#970
20M → 21M2125-123#970#1093
21M → 35K819-11#1093#1104
35K → 23M5145-140#1104#1244
23M → 24M5101-96#1244#1340
24M → 40K2101-99#1340#1439
40K → 25.2M157-56#1439#1495
25.2M → Finish2100-98#1495#1593
TOTALS407800-393
📊

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